Corrosion-resistant and wear-resistant spiral steel pipe

Abstract

The utility model discloses an anti-corrosion wear-resistant spiral steel pipe which comprises a spiral steel pipe body, a first anti-corrosion layer is arranged on the inner surface of the spiral steel pipe body, a second anti-corrosion layer is arranged on the outer surface of the spiral steel pipe body, and a plurality of protective sleeves are arranged on the outer side of the spiral steel pipe body in a sleeved mode. A wear-resistant layer is arranged on the outer surface of the protective sleeve, under the action of a first anti-corrosion layer, the inner surface of the spiral steel pipe body can be protected, the anti-corrosion effect is achieved, and when the spiral steel pipe is used as a sewage pipe, the inner surface of the spiral steel pipe body is prevented from being corroded by sewage; and meanwhile, under the action of the second anti-corrosion layer, the anti-corrosion effect on the outer surface of the spiral steel pipe body can be achieved, the spiral steel pipe body is prevented from being corroded by external moisture, and convenience is brought to people.

Description

Technical Field

[0001] The utility model relates to the technical field of spiral steel pipe fittings, in particular to a corrosion-resistant and wear-resistant spiral steel pipe. Background Art

[0002] Spiral steel pipe, also known as spiral seam steel pipe, is made of strip steel coil as raw material, extruded at room temperature, and welded by automatic double-wire double-sided submerged arc welding process. The spiral steel pipe sends the strip steel into the welding pipe unit, and is rolled by multiple rollers. The strip steel is gradually rolled up to form a round tube blank with an open gap. The pressure of the extrusion roller is adjusted to control the weld gap between 1mm and 3mm, and make the two ends of the weld flush to form the final product.

[0003] The existing spiral steel pipes still have certain shortcomings during their actual use. Affected by the material of the spiral steel pipes themselves, when the spiral steel pipes are used as sewage pipes, their interior will be flushed by sewage for a long time. There are many impurities in the sewage, which can easily cause certain corrosion to the spiral steel pipes. The spiral steel pipes working in the open air have a single external structure and are easily bumped or rubbed by external objects, which affects the service life of the spiral steel pipes. Utility Model Content

[0004] In order to solve the above problems, that is, to solve the problems raised by the above background technology, the utility model proposes a corrosion-resistant and wear-resistant spiral steel pipe, including a spiral steel pipe body, a first anti-corrosion layer is provided on the inner surface of the spiral steel pipe body, a second anti-corrosion layer is provided on the outer surface of the spiral steel pipe body, a plurality of protective sleeves are provided on the outer side of the spiral steel pipe body, a wear-resistant layer is provided on the outer surface of the protective sleeve, and a connecting mechanism connected to the spiral steel pipe body is provided on the inner surface of the protective sleeve.

[0005] Preferably, the connection mechanism comprises a pair of limit blocks fixedly mounted on the inner surface of the protective sleeve, and a limit groove slidably connected to the limit blocks is formed on the outer surface of the spiral steel pipe body.

[0006] Preferably, an arc block is provided between the spiral steel pipe body and the protective sleeve, one end face of the arc block is in contact with the second anti-corrosion layer, and a bolt is provided on the protective sleeve, one end of the bolt is rotatably connected to the outer surface of the arc block.

[0007] Preferably, a slide groove is formed on one end surface of the arc block close to the protective sleeve, and a slide rod plugged into the slide groove is fixedly mounted on the inner surface of the protective sleeve.

[0008] The beneficial technical effect of the utility model is that under the action of the first anti-corrosion layer, the inner surface of the spiral steel pipe body can be protected to play an anti-corrosion role, preventing sewage from corroding the inner surface of the spiral steel pipe body when used as a sewage pipe;

[0009] At the same time, under the action of the second anti-corrosion layer, the outer surface of the spiral steel pipe body can be protected from corrosion, preventing external moisture from corroding the spiral steel pipe body;

[0010] At the same time, under the action of the connecting mechanism, several protective sleeves can be connected to the spiral steel pipe body, so that it can protect the spiral steel pipe body and prevent external objects from bumping into the spiral steel pipe body and causing damage to the spiral steel pipe body. At the same time, under the action of the wear-resistant layer, the wear resistance of the protective sleeve can be increased to prevent external objects from rubbing against the outer surface of the protective sleeve and causing damage to the protective sleeve, bringing convenience to people. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the front cross-sectional structure of the utility model is shown.

[0012] Figure 2 The utility model is shown Figure 1 Schematic diagram of the enlarged structure of part A.

[0013] Figure 3 A schematic diagram of the top structure of the utility model is shown.

[0014] Figure numerals: 1, spiral steel pipe body, 2, first anti-corrosion layer, 3, second anti-corrosion layer, 4, protective sleeve, 5, wear-resistant layer, 6, limit block, 7, limit groove, 8, arc block, 9, bolt, 10, slide groove, 11, slide rod. DETAILED DESCRIPTION

[0015] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0016] The utility model proposes a corrosion-resistant and wear-resistant spiral steel pipe, comprising a spiral steel pipe body 1, a first anti-corrosion layer 2 is provided on the inner surface of the spiral steel pipe body 1, a second anti-corrosion layer 3 is provided on the outer surface of the spiral steel pipe body 1, a plurality of protective sleeves 4 are provided on the outer side of the spiral steel pipe body 1, a wear-resistant layer 5 is provided on the outer surface of the protective sleeve 4, and a connecting mechanism connected to the spiral steel pipe body 1 is provided on the inner surface of the protective sleeve 4;

[0017] The first anti-corrosion layer 2 and the second anti-corrosion layer 3 are both amine-cured epoxy resins, which are respectively coated on the inner and outer surfaces of the spiral steel pipe body 1, and can play an anti-corrosion role. At the same time, the wear-resistant layer 5 is an iron-based alloy powder laser-clad on the outer surface of the protective sleeve 4, which can provide wear resistance for the outer surface of the protective sleeve 4. At the same time, the protective sleeve 4 can protect the spiral steel pipe body 1. At the same time, a pair of connecting blocks are provided on the outer side of the connection of each pair of protective sleeves 4, and a pair of threaded rods are threaded on the connecting blocks. The pair of threaded rods are respectively threadedly connected to a pair of protective sleeves 4.

[0018] Specifically, the connection mechanism includes a pair of limit blocks 6 fixedly mounted on the inner surface of the protective sleeve 4, and a limit groove 7 slidably connected to the limit blocks 6 is formed on the outer surface of the spiral steel pipe body 1;

[0019] Under the action of the limiting block 6 and the limiting groove 7 , the lateral positions of the protective sleeve 4 and the spiral steel pipe body 1 can be relatively fixed, so that the protective sleeve 4 can protect the spiral steel pipe body 1 conveniently.

[0020] Specifically, an arc block 8 is provided between the spiral steel pipe body 1 and the protective sleeve 4, one end surface of the arc block 8 is in contact with the second anti-corrosion layer 3, and a bolt 9 is provided on the protective sleeve 4, one end of the bolt 9 is rotatably connected to the outer surface of the arc block 8;

[0021] The bolt 9 is threadedly connected to the protective sleeve 4. At the same time, the positive rotation of the screw rod 9 can drive the arc block 8 to move, so that one end surface of the arc block 8 is tightly fitted with the second anti-corrosion layer 3, so that the protective sleeve 4 and the spiral steel pipe body 1 are relatively fixed.

[0022] Specifically, a slide groove 10 is formed on one end surface of the arc block 8 close to the protective sleeve 4, and a slide rod 11 plugged into the slide groove 10 is fixedly installed on the inner surface of the protective sleeve 4;

[0023] Under the action of the slide groove 10 and the slide rod 11, the moving position of the arc block 8 can be limited so that it remains stable during movement.

[0024] Working principle: First, the staff will put several protective sleeves 4 on the outside of the spiral steel pipe body 1, and at the same time make the limit block 6 and the limit groove 7 slidingly connected to protect the spiral steel pipe body 1. At the same time, the staff will use a pair of connecting blocks and two pairs of threaded rods to connect each pair of protective sleeves 4 to each other so that they are fixed to each other. At this time, the staff will turn the bolt 9 to drive the arc block 8 to move. At this time, one end face of the arc block 8 contacts the outer surface of the second anti-corrosion layer 3, so that the protective sleeve 4 and the spiral steel pipe body 1 are relatively fixed. At the same time, the wear-resistant layer 5 can increase the wear resistance of the protective sleeve 4 and increase its service life. The first anti-corrosion layer 2 and the second anti-corrosion layer 3 can play an anti-corrosion role on the spiral steel pipe body 1, which can increase its service life and bring convenience to people.

[0025] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0026] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0029] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A corrosion-resistant and wear-resistant spiral steel pipe, comprising a spiral steel pipe body (1), characterized in that: A first anti-corrosion layer (2) is provided on the inner surface of the spiral steel pipe body (1), a second anti-corrosion layer (3) is provided on the outer surface of the spiral steel pipe body (1), a plurality of protective sleeves (4) are provided on the outer side of the spiral steel pipe body (1), a wear-resistant layer (5) is provided on the outer surface of the protective sleeve (4), and a connection mechanism connected to the spiral steel pipe body (1) is provided on the inner surface of the protective sleeve (4).

2. The corrosion-resistant and wear-resistant spiral steel pipe according to claim 1, characterized in that: The connection mechanism comprises a pair of limit blocks (6) fixedly mounted on the inner surface of the protective sleeve (4), and a limit groove (7) slidably connected to the limit blocks (6) is formed on the outer surface of the spiral steel pipe body (1).

3. The corrosion-resistant and wear-resistant spiral steel pipe according to claim 1, characterized in that: An arc block (8) is provided between the spiral steel pipe body (1) and the protective sleeve (4), one end face of the arc block (8) is in contact with the second anti-corrosion layer (3), and a bolt (9) is provided on the protective sleeve (4), one end of the bolt (9) is rotatably connected to the outer surface of the arc block (8).

4. The corrosion-resistant and wear-resistant spiral steel pipe according to claim 3, characterized in that: A slide groove (10) is formed on one end surface of the arc block (8) close to the protective sleeve (4), and a slide rod (11) plugged into the slide groove (10) is fixedly mounted on the inner surface of the protective sleeve (4).

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