Polybutylene toughened polypropylene random copolymer composite antibacterial pipe

Abstract

The utility model relates to a polybutylene toughened polypropylene random copolymer composite antibacterial pipe. The problems that in the prior art, pipe fitting materials are soft, poor in toughness and prone to hole shrinkage are solved. The pipe fitting comprises a pipe fitting body, a polypropylene antibacterial inner layer is arranged on the inner side of the pipe fitting body in the circumferential direction, a polypropylene random copolymer outer layer is arranged on the outer side of the polypropylene antibacterial inner layer in the circumferential direction, a polybutylene structure middle layer is arranged between the polypropylene antibacterial inner layer and the polypropylene random copolymer outer layer, and a sliding type stretching structure is arranged on the outer wall of the polypropylene random copolymer outer layer in the circumferential direction. Inserting connection assemblies are arranged at the two ends of the pipe fitting body, and the ends of the sliding type stretching structures are connected with the inserting connection assemblies. The utility model has the advantages that the structural toughness and the pressure resistance are good, the drift diameter of the pipe is increased on the premise of ensuring the design pressure, and the water flow is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe fittings, and particularly relates to a polybutene toughened random copolymer polypropylene composite antibacterial pipe. Background Art

[0002] The existing cold water pipes and hot water pipes are usually the same kind of pipe material, and the most common one is polyethylene pipe. However, due to the poor heat insulation performance of polyethylene pipes, it is easy to make hot water cool. Especially when transporting hot water over a long distance, the water temperature drops more significantly. In winter in the north, due to the poor structural strength of polyethylene pipes, it is also easy to have situations such as freezing and cracking. In addition, due to the relatively soft pipe fitting material, poor toughness, and easy necking, the water flow rate in the pipe is affected.

[0003] In order to solve the deficiencies of the existing technology, people have carried out long-term explorations and proposed various solutions. For example, a Chinese patent document discloses a polypropylene pipe for cold and hot water [CN201320553586.5], which includes a polybutene layer, a metal mesh layer, a polypropylene layer, a heat insulation layer, and a cover; wherein, the polybutene layer, the metal mesh layer, the polypropylene layer, the heat insulation layer, and the cover are arranged in sequence from the inside to the outside; the heat insulation layer is a heat insulation layer made of sponge material; the polybutene layer, the metal mesh layer, and the polypropylene layer are integrally injection molded; the heat insulation layer and the cover are glued to the outside of the polypropylene layer in sequence.

[0004] The above solution solves to a certain extent the problems of poor heat insulation performance and poor structural strength of the existing technology pipes, and it is easy to have freezing and cracking, but this solution still has many deficiencies. For example: the pipe fitting material is relatively soft, has poor toughness, and is easy to neck, thus affecting the water flow rate in the pipe. Summary of the Invention

[0005] The purpose of the utility model is to provide a polybutene toughened random copolymer polypropylene composite antibacterial pipe for the above problems.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions: a polybutene toughened random copolymer polypropylene composite antibacterial pipe, including a pipe fitting main body. An inner polypropylene antibacterial layer is arranged on the inner circumference of the pipe fitting main body. An outer random copolymer polypropylene layer is arranged on the outer circumference of the inner polypropylene antibacterial layer. A polybutene structural middle layer is arranged between the inner polypropylene antibacterial layer and the outer random copolymer polypropylene layer. A sliding tensile structure is arranged on the outer wall of the outer random copolymer polypropylene layer, and plug-in connection components are arranged at both ends of the pipe fitting main body. The end of the sliding tensile structure is connected to the plug-in connection components.

[0007] In the above polybutene toughened random copolymer polypropylene composite antibacterial pipe, the thickness ratio of the inner polypropylene antibacterial layer, the polybutene structural middle layer, and the outer random copolymer polypropylene layer is 1:2:1.

[0008] In the above-mentioned polybutene toughened random copolymer polypropylene composite antibacterial pipe, the polybutene structure layer includes an impact-resistant inner layer, an elastic structure outer layer is arranged on the circumferential outer side of the impact-resistant inner layer, and a buffer cavity is arranged between the elastic structure outer layer and the impact-resistant inner layer.

[0009] In the above-mentioned polybutene toughened random copolymer polypropylene composite antibacterial pipe, a number of elastic support members are arranged at equal intervals in the buffer cavity, the circumferential outer wall of the elastic support member is connected to the elastic structure outer layer, and the circumferential inner wall of the elastic support member is connected to the impact-resistant inner layer.

[0010] In the above-mentioned polybutene toughened random copolymer polypropylene composite antibacterial pipe, a number of rigid support members are arranged at equal intervals on the circumferential inner side of the impact-resistant inner layer.

[0011] In the above-mentioned polybutene toughened random copolymer polypropylene composite antibacterial pipe, the rigid support members and the elastic support members are arranged in a staggered manner in sequence.

[0012] In the above-mentioned polybutene toughened random copolymer polypropylene composite antibacterial pipe, the sliding tensile structure includes an arc-shaped assembly groove arranged on the circumferential outer wall of the random copolymer polypropylene outer layer, sliding connection grooves are arranged on both sides of the arc-shaped assembly groove, and a number of arc-shaped tensile members are arranged in the arc-shaped assembly groove.

[0013] In the above-mentioned polybutene toughened random copolymer polypropylene composite antibacterial pipe, both ends of the arc-shaped tensile member are slidably arranged in the sliding connection groove through sliders, and adjacent arc-shaped tensile members are connected by an elastic connection band.

[0014] In the above-mentioned polybutene toughened random copolymer polypropylene composite antibacterial pipe, the plug-in connection assembly includes a connecting ring body, positioning members connected to the mutually approaching arc-shaped tensile members are arranged on the connecting ring body, and the positioning of the positioning members away from the arc-shaped tensile members is in the arc-shaped connection groove on the connecting ring body.

[0015] In the above-mentioned polybutene toughened random copolymer polypropylene composite antibacterial pipe, a transparent protective pipe for covering the sliding tensile structure is arranged on the circumferential outer side of the random copolymer polypropylene outer layer.

[0016] Compared with the existing technology, the advantages of the present utility model are as follows: good structural toughness and excellent stability during use, the antibacterial performance is improved by adopting a polypropylene antibacterial inner layer, the structural toughness and pressure resistance of the pipe are improved by adopting a polybutene structure middle layer, and the total wall thickness of the pipe can be reduced on the premise of meeting the design pressure requirements, thereby increasing the pipe diameter, enabling it to increase the water flow rate under the same design conditions, and can be used in the cold and hot water pipe systems, air conditioning pipeline systems and other industrial pipes in buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the schematic diagram of the plug-in rotating assembly in the present utility model;

[0019] Figure 3 is the structural schematic diagram of the flow guiding and cutting mechanism in the present utility model;

[0020] Figure 4 is the structural schematic diagram of the linkage cylinder shaft in the present utility model;

[0021] Figure 5 is the structural schematic diagram of the connecting ring body in the present utility model;

[0022] In the figure: pipe fitting main body 1, polypropylene antibacterial inner layer 11, random copolymer polypropylene outer layer 12, polybutene structural middle layer 2, impact-resistant inner layer 21, elastic structural outer layer 22, buffer cavity 23, elastic support member 24, rigid support member 25, sliding type stretching structure 3, arc-shaped assembly groove 31, sliding connection groove 32, arc-shaped stretching member 33, slider 34, elastic connection band 35, plug-in connection assembly 4, connecting ring body 41, positioning member 42, arc-shaped connection groove 43, transparent protective tube 5. Specific embodiments

[0023] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0024] As Figures 1-5 shown, a polybutene toughened random copolymer polypropylene composite antibacterial pipe includes a pipe fitting main body 1. An inner circumferential side of the pipe fitting main body 1 is provided with a polypropylene antibacterial inner layer 11. An outer circumferential side of the polypropylene antibacterial inner layer 11 is provided with a random copolymer polypropylene outer layer 12. A polybutene structural middle layer 2 is provided between the polypropylene antibacterial inner layer 11 and the random copolymer polypropylene outer layer 12. An outer circumferential wall of the random copolymer polypropylene outer layer 12 is provided with a sliding type stretching structure 3. Plug-in connection assemblies 4 are provided at both ends of the pipe fitting main body 1. An end of the sliding type stretching structure 3 is connected to the plug-in connection assemblies 4.

[0025] Among them, the thickness ratio of the polypropylene antibacterial inner layer 11, the polybutene structural middle layer 2, and the random copolymer polypropylene outer layer 12 is 1:2:1.

[0026] The material of the random copolymer polypropylene outer layer 12 is polybutene-compatible random copolymer polypropylene particles. This material has good compatibility with the polypropylene antibacterial inner layer 11, making it not easy to delaminate.

[0027] The polypropylene antibacterial inner layer 11 is a polypropylene antibacterial layer, and the material is polybutene particles added with antibacterial masterbatch on the basis of the same polybutene compatible random copolymerized polypropylene material as the outer layer. Due to the addition of the antibacterial masterbatch, good sanitary performance can be ensured during pipeline water transportation.

[0028] Furthermore, the middle layer 2 of the polybutene structure includes an impact-resistant inner layer 21. An elastic structure outer layer 22 is provided on the circumferential outer side of the impact-resistant inner layer 21, and a buffer cavity 23 is provided between the elastic structure outer layer 22 and the impact-resistant inner layer 21.

[0029] The middle layer 2 of the polybutene structure is a polybutene reinforcement layer, and the main material is homopolymerized polybutene particles. The function of this layer is to improve the pressure resistance and low-temperature impact resistance of the pipe.

[0030] Obviously, a number of elastic support members 24 are equidistantly provided in the buffer cavity 23. The circumferential outer wall of the elastic support member 24 is connected to the elastic structure outer layer 22, and the circumferential inner wall of the elastic support member 24 is connected to the impact-resistant inner layer 21.

[0031] Furthermore, a number of rigid support members 25 are provided at equal intervals on the circumferential inner side of the impact-resistant inner layer 21.

[0032] When transporting hot water, the arrangement of a number of elastic support members 24 equidistantly provided in the buffer cavity 23 provides an expansion buffer gap and elastic resistance for the impact-resistant inner layer 21. When transporting cold water, the structural strength is improved through the rigid support members 25.

[0033] Specifically, the rigid support members 25 and the elastic support members 24 are arranged in a staggered manner in sequence.

[0034] More specifically, the sliding tensile structure 3 includes an arc-shaped assembly groove 31 provided on the circumferential outer wall of the random copolymerized polypropylene outer layer 12. Sliding connection grooves 32 are provided on both sides of the arc-shaped assembly groove 31, and a number of arc-shaped tensile members 33 are provided in the arc-shaped assembly groove 31.

[0035] In detail, both ends of the arc-shaped tensile member 33 are slidably arranged in the sliding connection groove 32 through sliders 34, and adjacent arc-shaped tensile members 33 are connected by an elastic connection band 35.

[0036] The arc-shaped tensile member 33 can slide and adjust its position in the arc-shaped assembly groove 31 and is elastically limited by the elastic connection band 35 to ensure the external toughness of the pipe fitting body 1.

[0037] Preferably, the plug-in connection assembly 4 includes a connecting ring body 41. Positioning members 42 connected to the mutually approaching arc-shaped tensile members 33 are provided on the connecting ring body 41, and the positioning of the positioning members 42 away from the arc-shaped tensile members 33 is in the arc-shaped connection groove 43 on the connecting ring body 41.

[0038] In addition, a transparent protective tube 5 for covering the sliding tensile structure 3 is provided on the circumferential outer side of the random copolymer polypropylene outer layer 12.

[0039] In summary, the principle of this embodiment is as follows: the antibacterial performance of cold and hot water transportation is improved by setting the polypropylene antibacterial inner layer 11. Secondly, the impact resistance and thermal expansion toughness against cold water impact and hot water expansion are provided by setting the buffer cavity 23, the elastic support member 24, and the rigid support member 25 in the polybutene structure middle layer 2. And the toughness and structural strength of the outer layer structure of the pipe fitting body 1 are improved by setting the sliding tensile structure 3 in the random copolymer polypropylene outer layer 12. Using the random copolymer polypropylene material and the polybutene material can reduce the total wall thickness of the pipe fitting body 1 on the premise of meeting the design pressure requirements, thereby increasing the inner diameter of the pipe fitting body 1, so that the water flow rate can be increased under the same design conditions.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0041] Although terms such as pipe fitting body 1, polypropylene antibacterial inner layer 11, random copolymer polypropylene outer layer 12, polybutene structure middle layer 2, impact-resistant inner layer 21, elastic structure outer layer 22, buffer cavity 23, elastic support member 24, rigid support member 25, sliding tensile structure 3, arc-shaped assembly groove 31, sliding connection groove 32, arc-shaped tensile member 33, slider 34, elastic connection band 35, plug-in connection assembly 4, connection ring body 41, positioning member 42, arc-shaped connection groove 43, transparent protective tube 5 are used more in this article, the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A polybutene toughened random copolymer polypropylene composite antibacterial tube, comprising a tube body (1), wherein the tube body (1) is provided with a polypropylene antibacterial inner layer (11) on the inner side in the circumferential direction, and the polypropylene antibacterial inner layer (11) is provided with a random copolymer polypropylene outer layer (12) on the outer side in the circumferential direction, characterized in that: A polybutene structure middle layer (2) is provided between the polypropylene antibacterial inner layer (11) and the random copolymer polypropylene outer layer (12); a sliding stretching structure (3) is provided on the circumferential outer wall of the random copolymer polypropylene outer layer (12); and plug-in connection components (4) are provided at both ends of the pipe body (1); and the ends of the sliding stretching structure (3) are connected to the plug-in connection components (4).

2. The polybutene toughened random copolymer polypropylene composite antibacterial tube according to claim 1, characterized in that: The thickness ratio of the polypropylene antibacterial inner layer (11), the polybutylene structure middle layer (2), and the random copolymer polypropylene outer layer (12) is 1:2:

1.

3. The polybutene toughened random copolymer polypropylene composite antibacterial tube according to claim 1, characterized in that: The polybutene structure middle layer (2) comprises an impact-resistant inner layer (21), an elastic structure outer layer (22) is provided on the circumferential outer side of the impact-resistant inner layer (21), and a buffer cavity (23) is provided between the elastic structure outer layer (22) and the impact-resistant inner layer (21).

4. The polybutene toughened random copolymer polypropylene composite antibacterial tube according to claim 3, characterized in that: A plurality of elastic support members (24) are equidistantly arranged in the buffer cavity (23); the circumferential outer wall of the elastic support member (24) is connected to the elastic structure outer layer (22), and the circumferential inner wall of the elastic support member (24) is connected to the impact-resistant inner layer (21).

5. The polybutene toughened random copolymer polypropylene composite antibacterial tube according to claim 4, characterized in that: A plurality of rigid support members (25) arranged at equal intervals are arranged on the inner side of the impact-resistant inner layer (21) in the circumferential direction.

6. The polybutene toughened random copolymer polypropylene composite antibacterial tube according to claim 5, characterized in that: The rigid support member (25) and the elastic support member (24) are arranged in a staggered manner.

7. The polybutene toughened random copolymer polypropylene composite antibacterial tube according to claim 1, characterized in that: The sliding stretching structure (3) comprises an arc-shaped assembly groove (31) arranged on the circumferential outer wall of the random copolymer polypropylene outer layer (12), sliding connection grooves (32) are arranged on both sides of the arc-shaped assembly groove (31), and a plurality of arc-shaped stretching parts (33) are arranged in the arc-shaped assembly groove (31).

8. The polybutene toughened random copolymer polypropylene composite antibacterial tube according to claim 7, characterized in that: The two ends of the arc-shaped stretching member (33) are slidably arranged in the sliding connection groove (32) through sliding blocks (34), and two adjacent arc-shaped stretching members (33) are connected through an elastic connection belt (35).

9. The polybutene toughened random copolymer polypropylene composite antibacterial tube according to claim 8, characterized in that: The plug-in connection assembly (4) comprises a connecting ring body (41), on which a positioning piece (42) connected to mutually adjacent arc-shaped stretching pieces (33) is provided, and the positioning piece (42) is positioned away from the arc-shaped stretching pieces (33) in an arc-shaped connecting groove (43) on the connecting ring body (41).

10. The polybutene toughened random copolymer polypropylene composite antibacterial tube according to claim 8, characterized in that: A transparent protective tube (5) for covering the sliding stretching structure (3) is provided on the circumferential outer side of the random copolymer polypropylene outer layer (12).

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