PE double-wall corrugated pipe capable of preventing acid and alkali corrosion

Abstract

The utility model discloses a PE double-wall corrugated pipe capable of preventing acid and alkali corrosion, and relates to the technical field of double-wall corrugated pipes. The PE double-wall corrugated pipe capable of preventing acid and alkali corrosion comprises an outer wall pipe, the fastening connection assembly is arranged on the outer wall pipe, the fastening connection assembly comprises an internal thread ring, a ring piece, an external thread ring, a groove, a first fixing piece, a nut, a threaded column, a hole, a second fixing piece and a hoop, the ring piece is fixed to the outer wall pipe, the groove is formed in the ring piece, and the hoop is arranged in the groove. Connection can be achieved through the inner threaded ring and the outer threaded ring, so that the situation that two PE double-wall corrugated pipes can be connected together only through an additional connector is avoided, meanwhile, a hoop in the fastening and connecting assembly is arranged, the hoop can move and contract to extrude the ring piece, and therefore connection of the two PE double-wall corrugated pipes is reinforced, and the service life of the two PE double-wall corrugated pipes is prolonged. Therefore, the connection tightness of the two PE double-wall corrugated pipes is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double-wall corrugated pipes, and particularly relates to a PE double-wall corrugated pipe resistant to acid and alkali corrosion. Background Art

[0002] The PE double-wall corrugated pipe, the full name is high-density polyethylene double-wall corrugated pipe, referred to as PE corrugated pipe, is a new type of lightweight pipe first developed in Germany in the early 1980s. The Chinese utility model patent, the authorization announcement number "CN218267957U", discloses a PE double-wall corrugated pipe resistant to acid and alkali corrosion, including an inner connecting pipe and an outer protective pipe. The outer protective pipe is fixedly sleeved on the outer surface of the inner connecting pipe. An acid and alkali resistant component for improving the acid and alkali resistance of the inner connecting pipe is arranged on the inner wall of the inner connecting pipe. A second protective layer made of polytetrafluoroethylene material is arranged on the outer surface of the outer protective pipe. This PE double-wall corrugated pipe resistant to acid and alkali corrosion.

[0003] Through the above technical solutions, by setting the first protective layer, the reinforcing layer, the second protective layer, the first toughening component, the reinforcing ring and the metal hose, the acid and alkali resistance of the inner connecting pipe can be improved, and the overall toughness and antioxidant performance of the corrugated pipe can be increased, thereby increasing the service life of the corrugated pipe. Most PE double-wall corrugated pipes need a special connector to connect two PE double-wall corrugated pipes when in use. The connection is not only troublesome, but also the connector is easy to be lost or bought less or more. Content of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a PE double-wall corrugated pipe resistant to acid and alkali corrosion, which can solve the problem that most PE double-wall corrugated pipes need a special connector to connect two PE double-wall corrugated pipes when in use. The connection is not only troublesome, but also the connector is easy to be lost or bought less or more.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: A PE double-wall corrugated pipe resistant to acid and alkali corrosion, including an outer wall pipe;

[0006] A fastening connection assembly is arranged on the outer wall pipe. The fastening connection assembly includes an internal thread ring, a ring part, an external thread ring, a groove, a fixing part one, a nut, a threaded column, a hole, a fixing part two and a clamp. The ring part is fixed on the outer wall pipe. The groove is opened on the ring part. The clamp is arranged inside the groove. One end of the clamp is fixedly connected with the fixing part one, and the other end of the clamp is fixedly connected with the fixing part two.

[0007] Preferably, the hole is opened on the fixing part two, the threaded column is welded on the fixing part one, and the diameter of the threaded column is smaller than the inner diameter of the hole.

[0008] Preferably, the inner surface of the nut is threadedly connected to the outer surface of the threaded post. The surface of the nut is in contact with the surface of the second fixing member, and the size of the nut is larger than the inner diameter of the hole.

[0009] Preferably, the internal thread ring is arranged inside the ring member. A PE pipe is welded to the surface of the internal thread ring, and the other end of the PE pipe is welded to the external thread ring.

[0010] Preferably, the PE pipe is composed of an anti-corrosion layer and a wear-resistant layer. The wear-resistant layer is fixedly adhered to the outer surface of the anti-corrosion layer. The material of the anti-corrosion layer is an anti-corrosion nano-composite ceramic coating, and the anti-corrosion nano-composite ceramic material is composed of a modified ceramic material and a nano material, having a nano-composite structure.

[0011] Preferably, the anti-corrosion layer is a polyurethane coating. The polyurethane coating is a high-performance anti-corrosion coating, having good wear resistance, corrosion resistance and high-temperature resistance.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. For the PE double-wall corrugated pipe resistant to acid and alkali corrosion, by providing the internal thread ring and the external thread ring in the fastening connection assembly, the internal thread ring and the external thread ring can be connected, thus avoiding the need for an additional joint to connect two PE double-wall corrugated pipes. At the same time, by providing the clamp in the fastening connection assembly, the clamp can move and contract to squeeze the ring member, thereby strengthening the connection between the two PE double-wall corrugated pipes, and thus improving the tightness of the connection between the two PE double-wall corrugated pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0015] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0016] Figure 2 is a schematic diagram of the whole PE pipe of the present utility model;

[0017] Figure 3 is a schematic diagram of the positional relationship between the ring member and the groove of the present utility model;

[0018] Figure 4 is a schematic diagram of the whole clamp of the present utility model;

[0019] Figure 5 is of the present utility model Figure 4 magnified schematic diagram at A;

[0020] Figure 6 is a schematic diagram of the whole anti-corrosion layer and wear-resistant layer of the present utility model.

[0021] Reference numerals: 1, internal thread ring; 2, ring member; 3, outer wall pipe; 4, external thread ring; 5, PE pipe; 6, groove; 7, first fixing member; 8, nut; 9, threaded post; 10, hole; 11, second fixing member; 12, clamp; 501, anti-corrosion layer; 502, wear-resistant layer. Detailed implementation manners

[0022] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that for the orientation description, such as the upper, lower, front, rear, left, right, etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present invention.

[0024] In the description of the present invention, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0026] Please refer to Figures 1-6 , the present invention provides a technical solution: a PE double-wall corrugated pipe resistant to acid and alkali corrosion, including an outer wall pipe 3;

[0027] A fastening connection assembly is arranged on the outer wall pipe 3. The fastening connection assembly includes an internal thread ring 1, a ring member 2, an external thread ring 4, a groove 6, a first fixing member 7, a nut 8, a threaded post 9, a hole 10, a second fixing member 11 and a clamp 12. The ring member 2 is fixed on the outer wall pipe 3, the groove 6 is opened on the ring member 2, the clamp 12 is arranged inside the groove 6, one end of the clamp 12 is fixedly connected with the first fixing member 7, and the other end of the clamp 12 is fixedly connected with the second fixing member 11.

[0028] The hole 10 is formed in the second fixing member 11, and the threaded post 9 is welded to the first fixing member 7. The diameter of the threaded post 9 is smaller than the inner diameter of the hole 10.

[0029] The inner surface of the nut 8 is threadedly connected to the outer surface of the threaded post 9. The surface of the nut 8 is in contact with the surface of the second fixing member 11. The size of the nut 8 is larger than the inner diameter of the hole 10.

[0030] The internal threaded ring 1 is arranged inside the ring member 2. The surface of the internal threaded ring 1 is welded with a PE pipe 5, and the other end of the PE pipe 5 is welded to the external threaded ring 4.

[0031] The PE pipe 5 is composed of an anti-corrosion layer 501 and a wear-resistant layer 502. The wear-resistant layer 502 is fixedly adhered to the outer surface of the anti-corrosion layer 501. The material of the anti-corrosion layer 501 is an anti-corrosion nano-composite ceramic coating. The anti-corrosion nano-composite ceramic material is composed of a modified ceramic material and a nano material, and has a nano-composite structure. The addition of the nano material greatly improves the performance of the material such as paint film adhesion, density, and strength. Moreover, the anti-corrosion nano-composite ceramic material has corrosion resistance. The anti-corrosion nano-composite ceramic material can resist the corrosion of chemical substances such as acids, alkalis, and salt mists, and has super anti-corrosion performance. The anti-corrosion nano-composite ceramic material is environmentally friendly and non-toxic.

[0032] The anti-corrosion layer 501 is a polyurethane coating. Polyurethane paint is a high-performance anti-corrosion paint, which has good wear resistance, corrosion resistance, and high-temperature resistance. It also has excellent adhesion and impact resistance, and is suitable for various harsh environments.

[0033] When the splicing of the PE double-wall corrugated pipe is required;

[0034] First, an external force is used to drive the ring member 2 to move. The movement of the ring member 2 drives the internal threaded ring 1 to move until it is connected to the external threaded ring 4 corresponding to another ring member 2. Subsequently, an external tool is used to drive the nut 8 to loosen. The loosening of the nut 8 drives the first fixing member 7 and the second fixing member 11 to move away from each other. The movement away from each other of the first fixing member 7 and the second fixing member 11 drives the two ends of the clamp 12 to move away from each other, thereby fastening the ring member 2 and strengthening the connection between the two PE double-wall corrugated pipes.

[0035] By providing the internal threaded ring 1 and the external threaded ring 4 in the fastening connection assembly, the internal threaded ring 1 and the external threaded ring 4 can be connected, thereby avoiding the need for an additional joint to connect the two PE double-wall corrugated pipes. At the same time, by providing the clamp 12 in the fastening connection assembly, the clamp 12 can move and contract to squeeze the ring member 2, thereby strengthening the connection between the two PE double-wall corrugated pipes and improving the tightness of the connection between the two PE double-wall corrugated pipes.

[0036] Working principle:

[0037] When splicing the PE double-wall corrugated pipe is required;

[0038] First, drive the ring 2 to move through an external force. The movement of the ring 2 drives the internal thread ring 1 to move until it is connected to the external thread ring 4 corresponding to another ring 2. Subsequently, drive the nut 8 to loosen through an external tool. The loosening of the nut 8 drives the first fixing member 7 and the second fixing member 11 to move away from each other. The movement away from each other of the first fixing member 7 and the second fixing member 11 drives the two ends of the clamp 12 to move away from each other, thereby fastening the ring 2 and strengthening the connection between the two PE double-wall corrugated pipes.

[0039] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can also be made without departing from the gist of the present invention.

Claims

1. A PE double-wall corrugated pipe resistant to acid and alkali corrosion, characterized in that: include: Outer wall tube (3); The fastening connection assembly is arranged on the outer wall tube (3), and comprises an internal thread ring (1), a ring member (2), an external thread ring (4), a groove (6), a fixing member 1 (7), a nut (8), a threaded column (9), a hole (10), a fixing member 2 (11) and a clamp (12); the ring member (2) is fixed on the outer wall tube (3), the groove (6) is formed on the ring member (2), the clamp (12) is arranged inside the groove (6), one end of the clamp (12) is fixedly connected to the fixing member 1 (7), and the other end of the clamp (12) is fixedly connected to the fixing member 2 (11).

2. The acid- and alkali-resistant PE double-wall corrugated pipe according to claim 1, characterized in that: The hole (10) is formed on the second fixing member (11), the threaded column (9) is welded on the first fixing member (7), and the diameter of the threaded column (9) is smaller than the inner diameter of the hole (10).

3. The acid- and alkali-resistant PE double-wall corrugated pipe according to claim 1, characterized in that: The inner surface of the nut (8) is threadedly connected to the outer surface of the threaded column (9), the surface of the nut (8) is in contact with the surface of the second fixing member (11), and the size of the nut (8) is larger than the inner diameter of the hole (10).

4. The acid- and alkali-resistant PE double-wall corrugated pipe according to claim 1, characterized in that: The internal thread ring (1) is arranged inside the ring member (2), a PE pipe (5) is welded to the surface of the internal thread ring (1), and the other end of the PE pipe (5) is welded to the external thread ring (4).

5. The acid- and alkali-resistant PE double-wall corrugated pipe according to claim 1, characterized in that: The PE pipe (5) is composed of an anti-corrosion layer (501) and a wear-resistant layer (502); the wear-resistant layer (502) is fixedly adhered to the outer surface of the anti-corrosion layer (501); the material of the anti-corrosion layer (501) is an anti-corrosion nano-composite ceramic coating; the anti-corrosion nano-composite ceramic material is composed of modified ceramic material and nano-material and has a nano-composite structure.

6. The acid- and alkali-resistant PE double-wall corrugated pipe according to claim 5, characterized in that: The anti-corrosion layer (501) is a polyurethane coating, which is a high-performance anti-corrosion coating with good wear resistance, corrosion resistance and high temperature resistance.

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