Plastic pipe elbow with flame-retardant function

Abstract

The utility model discloses a plastic pipe elbow with a flame retardant function, and relates to the technical field of pipe elbows. According to the plastic pipe elbow with the flame-retardant function, the flame-retardant inner pipe and the flame-retardant outer pipe are made of high-impact-resistant polystyrene resin materials, and meanwhile the interior of the first flame-retardant cavity is supported through the first reinforcing ribs, so that the overall impact resistance of the elbow is improved; the end of the pipeline is tightly attached to the sealing strip, butt joint and sealing of the elbow and the pipeline are achieved, the overall strength and impact resistance of the connecting part are effectively improved through supporting of the second reinforcing ribs to the inner side of the second flame-retardant cavity, the flame retardant leaks out when the flame-retardant inner pipe and the flame-retardant outer pipe are fused, fire behavior is restrained, and the flame-retardant effect is improved. And the first flame-retardant cavity and the second flame-retardant cavity are separated through the first reinforcing rib and the second reinforcing rib, so that when the elbow is locally damaged, flame retardants in the first flame-retardant cavity and the second flame-retardant cavity cannot be completely leaked out.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe elbows, in particular to a plastic pipe elbow with a flame retardant function. Background Art

[0002] As an important component of chemical building materials, plastic pipes are widely accepted by users for their superior performance, hygiene, environmental protection, low consumption and other advantages. In the piping system, elbows are pipe fittings that change the direction of the pipeline and are an important component of pipeline laying.

[0003] The existing plastic pipe elbows have poor flame retardant properties, which may cause melting and burning in abnormal situations such as fires, which is not conducive to fire extinguishing and poses a great safety hazard. At the same time, the impact resistance is poor, which may cause deformation and damage to the elbows when they are subjected to external impacts, affecting the subsequent use of the pipeline and having low practicality. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a plastic pipe elbow with flame retardant function, which solves the problem that the flame retardant performance of the plastic pipe elbow is poor, which leads to melting and burning easily in abnormal situations such as fire, which is not conducive to fire extinguishing and has great safety hazards. At the same time, the impact resistance is poor, which leads to deformation and damage of the elbow when it is subjected to external impact, affecting the subsequent use of the pipeline and having low practicality.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a plastic pipe elbow with flame retardant function, comprising a flame retardant inner tube, a flame retardant outer tube is arranged on the outside of the flame retardant inner tube, a flame retardant cavity one is arranged between the flame retardant outer tube and the flame retardant inner tube, a reinforcing rib one is arranged on the inner side of the flame retardant cavity one, connecting parts are arranged at the left and right ends of the flame retardant inner tube, a sealing strip is arranged on the inner side of the connecting part, a flame retardant cavity two is opened inside the connecting part, a reinforcing rib two is arranged on the inner side of the flame retardant cavity two, and the same flame retardant is arranged inside the flame retardant cavity one and the flame retardant cavity two.

[0006] Preferably, the flame retardant inner tube and the flame retardant outer tube are both made of high-impact polystyrene resin material, and the flame retardant inner tube and the flame retardant outer tube are arranged in a concentric circle structure, utilizing the high impact strength and rigidity of the high-impact polystyrene resin material to improve the overall impact resistance of the elbow.

[0007] Preferably, the reinforcing rib 1 is designed in an annular structure, and a plurality of them are evenly distributed on the inner side of the flame retardant cavity 1. The reinforcing rib 1 is respectively fixedly connected to the outer side of the flame retardant inner tube and the inner side of the flame retardant outer tube, thereby effectively supporting and separating the interior of the flame retardant cavity 1.

[0008] Preferably, the connecting part and the flame retardant inner tube are arranged in a concentric circle structure, and the connection between the connecting part and the flame retardant inner tube is arranged in a step-like structure. The sealing strip is located at the connection between the connecting part and the flame retardant inner tube and is adapted to each other, and is designed in an annular structure. The sealing strip is made of silicone rubber, which facilitates the docking and sealing of the elbow and the pipeline.

[0009] Preferably, the second reinforcing rib is located on the inner side of the second flame retardant cavity and is arranged in a circular array in plurality, and is fixedly connected to the inner side of the second flame retardant cavity. The second reinforcing rib is designed in a strip structure, which improves the strength of the connection part and effectively supports and separates the interior of the second flame retardant cavity.

[0010] Preferably, the reinforcing rib 1, the connecting part and the reinforcing rib 2 are preferably made of high-impact polystyrene resin material, and the flame retardant is preferably made of aluminum hydroxide flame retardant sand to achieve the overall impact resistance and flame retardant properties of the elbow. Beneficial Effects

[0011] The utility model provides a plastic pipe elbow with flame retardant function. Compared with the prior art, it has the following beneficial effects:

[0012] 1. The flame-retardant plastic pipe elbow is provided with a flame-retardant inner pipe, a flame-retardant outer pipe, a flame-retardant cavity, and a reinforcing rib. The flame-retardant inner pipe and the flame-retardant outer pipe have high impact strength and rigidity of high-impact polystyrene resin. The flame-retardant cavity is supported by the reinforcing rib, thereby improving the overall impact resistance of the elbow.

[0013] 2. The flame-retardant plastic pipe elbow is provided with a connecting part, a sealing strip, a second flame-retardant cavity, and a second reinforcing rib. By inserting the pipe into the inner side of the connecting part, the pipe end is closely fitted with the sealing strip, thereby achieving docking and sealing between the elbow and the pipe. The support of the second reinforcing rib on the inner side of the second flame-retardant cavity effectively increases the overall strength and impact resistance of the connecting part, making it less likely to deform and affect the stability of docking with the pipe.

[0014] 3. The flame-retardant plastic pipe elbow has a flame retardant, a flame retardant cavity 1 and a flame retardant cavity 2. The flame retardant leaks out when the flame retardant inner tube and the flame retardant outer tube melt, thereby suppressing the fire. The flame retardant cavity 1 and the flame retardant cavity 2 are separated by reinforcing ribs 1 and 2, so that when the elbow is partially damaged, the flame retardant inside the flame retardant cavity 1 and the flame retardant cavity 2 will not leak out completely, thereby maintaining the flame retardant performance of other parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a top view and half-section structure schematic diagram of the utility model.

[0017] Figure 3 It is a front view half-section structure schematic diagram of the connection part of the utility model.

[0018] In the figure: 1. flame retardant inner tube; 2. flame retardant outer tube; 3. flame retardant cavity one; 4. reinforcing rib one; 5. connecting part; 6. sealing strip; 7. flame retardant cavity two; 8. reinforcing rib two; 9. flame retardant. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] See also Figure 1-3 The utility model provides a technical solution: a plastic pipe elbow with flame retardant function, comprising a flame retardant inner pipe 1, a flame retardant outer pipe 2 is arranged on the outside of the flame retardant inner pipe 1, the flame retardant inner pipe 1 and the flame retardant outer pipe 2 are both made of high-impact polystyrene resin, the flame retardant inner pipe 1 and the flame retardant outer pipe 2 are arranged in a concentric circle structure, a flame retardant cavity 3 is arranged between the flame retardant outer pipe 2 and the flame retardant inner pipe 1, a reinforcing rib 4 is arranged on the inner side of the flame retardant cavity 3, the reinforcing rib 4 is designed in an annular structure, and a plurality of reinforcing ribs 4 are evenly distributed on the inner side of the flame retardant cavity 3, the reinforcing ribs 4 are respectively fixedly connected to the outer side of the flame retardant inner pipe 1 and the inner side of the flame retardant outer pipe 2, the flame retardant inner pipe 1 and the flame retardant outer pipe 2 are made of high impact strength and rigidity of high-impact polystyrene resin, and the inner side of the flame retardant cavity 3 is supported and separated by the reinforcing rib 4, thereby improving the overall impact resistance of the elbow;

[0021] The left and right ends of the flame-retardant inner tube 1 are provided with connecting parts 5, and the inner side of the connecting part 5 is provided with a sealing strip 6. The connecting part 5 and the flame-retardant inner tube 1 are provided in a concentric circle structure, and the connecting part 5 and the flame-retardant inner tube 1 are provided at the connecting part 5 and the flame-retardant inner tube 1. The sealing strip 6 is located at the connecting part 5 and the flame-retardant inner tube 1. The connecting part 5 and the flame-retardant inner tube 1 are adapted to each other and are designed in an annular structure. The sealing strip 6 is made of silicone rubber. A flame-retardant cavity 7 is provided inside the connecting part 5. A reinforcing rib 8 is provided on the inner side of the flame-retardant cavity 7. The reinforcing rib 8 is located on the inner side of the flame-retardant cavity 7 and is provided in an annular array. Multiple, and fixedly connected to the inner side of the flame retardant cavity 2 7, the reinforcing rib 2 8 is designed in a strip structure, and by inserting the pipe into the inner side of the connecting part 5, the pipe end is closely fitted with the sealing strip 6, so as to achieve the docking and sealing of the elbow and the pipe, and the sealing strip 6 is made of silicone rubber material with high temperature resistance, good resilience and deformation, so as to improve the service life of the sealing strip 6, and the support and separation of the inner side of the flame retardant cavity 2 7 by the reinforcing rib 2 8 effectively increases the overall strength and impact resistance of the connecting part 5, so that it is not easy to deform and affect the stability of docking with the pipe;

[0022] The same flame retardant 9 is arranged inside the flame retardant cavity 1 3 and the flame retardant cavity 2 7. The reinforcing rib 1 4, the connecting part 5 and the reinforcing rib 2 8 are preferably made of high-impact polystyrene resin material, and the flame retardant 9 is preferably made of aluminum hydroxide flame retardant sand. By arranging the flame retardant 9 inside the flame retardant cavity 1 3 and the flame retardant cavity 2 7, the elbow can be effectively flame-retarded in the event of a fire. The flame retardant 9 leaks out when the flame retardant inner tube 1 and the flame retardant outer tube 2 melt, thereby suppressing the fire. The flame retardant cavity 1 3 and the flame retardant cavity 2 7 are separated by the reinforcing rib 1 4 and the reinforcing rib 2 8, so that when the elbow is partially damaged, the flame retardant 9 inside the flame retardant cavity 1 3 and the flame retardant cavity 2 7 will not leak out completely, so as to maintain the flame retardant properties of other parts.

[0023] During use, the high impact strength and rigidity of the high-impact polystyrene resin material of the flame-retardant inner tube 1 and the flame-retardant outer tube 2 are utilized, and the interior of the flame-retardant cavity 3 is supported and separated by the reinforcing rib 4, thereby improving the overall impact resistance of the elbow. By inserting the pipe into the inner side of the connecting portion 5, the pipe end is closely fitted with the sealing strip 6, thereby achieving docking and sealing between the elbow and the pipe. The high temperature resistance, good resilience and deformation of the silicone rubber material of the sealing strip 6 are utilized to improve the service life of the sealing strip 6. The support and separation of the inner side of the flame-retardant cavity 7 by the reinforcing rib 8 effectively increases the The overall strength and impact resistance of the connecting part 5 make it difficult to deform and affect the stability of the connection with the pipeline. By arranging the flame retardant 9 inside the flame retardant cavity 1 3 and the flame retardant cavity 2 7, the elbow can be effectively flame-retarded in the event of a fire. The flame retardant 9 leaks out when the flame retardant inner tube 1 and the flame retardant outer tube 2 melt, so as to suppress the fire. The flame retardant cavity 1 3 and the flame retardant cavity 2 7 are separated by the reinforcing ribs 1 4 and 8. When the elbow is partially damaged, the flame retardant 9 inside the flame retardant cavity 1 3 and the flame retardant cavity 2 7 will not leak out completely, so as to maintain the flame retardant properties of other parts.

[0024] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flame-retardant plastic pipe elbow, comprising a flame-retardant inner pipe (1), characterized in that: A flame retardant outer tube (2) is arranged on the outer side of the flame retardant inner tube (1); a flame retardant cavity (3) is arranged between the flame retardant outer tube (2) and the flame retardant inner tube (1); a reinforcing rib (4) is arranged on the inner side of the flame retardant cavity (3); connecting parts (5) are arranged on the left and right ends of the flame retardant inner tube (1); a sealing strip (6) is arranged on the inner side of the connecting part (5); a flame retardant cavity (7) is opened inside the connecting part (5); a reinforcing rib (8) is arranged on the inner side of the flame retardant cavity (7); and the same flame retardant (9) is arranged inside the flame retardant cavity (3) and the flame retardant cavity (7).

2. The flame retardant plastic pipe elbow according to claim 1, characterized in that: The flame retardant inner tube (1) and the flame retardant outer tube (2) are both made of high-impact polystyrene resin, and the flame retardant inner tube (1) and the flame retardant outer tube (2) are arranged in a concentric circle structure.

3. The flame retardant plastic pipe elbow according to claim 1, characterized in that: The reinforcing ribs 1 (4) are designed in an annular structure and are evenly distributed on the inner side of the flame retardant cavity 1 (3). The reinforcing ribs 1 (4) are respectively fixedly connected to the outer side of the flame retardant inner tube (1) and the inner side of the flame retardant outer tube (2).

4. The flame retardant plastic pipe elbow according to claim 1, characterized in that: The connecting portion (5) and the flame retardant inner tube (1) are arranged in a concentric circle structure, and the connection between the connecting portion (5) and the flame retardant inner tube (1) is arranged in a step-shaped structure. The sealing strip (6) is located at the connection between the connecting portion (5) and the flame retardant inner tube (1) and is adapted to each other and has a ring-shaped structure. The sealing strip (6) is made of silicone rubber.

5. The flame retardant plastic pipe elbow according to claim 1, characterized in that: The second reinforcing rib (8) is located inside the second flame retardant cavity (7) and is arranged in a ring array in plurality, and is fixedly connected to the inside of the second flame retardant cavity (7). The second reinforcing rib (8) is designed in a strip-shaped structure.

6. The flame retardant plastic pipe elbow according to claim 5, characterized in that: The reinforcing rib 1 (4), the connecting portion (5), and the reinforcing rib 2 (8) are preferably made of high-impact polystyrene resin, and the flame retardant (9) is preferably made of aluminum hydroxide flame retardant sand.

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