Pressure-resistant drainage PVC-U spiral pipe

Abstract

The utility model belongs to the technical field of drainage pipe fittings, particularly relates to a pressure-resistant drainage PVC-U spiral pipe, and aims to solve the problems that a buffering structure is not arranged in the conventional equipment, the buffering behavior cannot be performed when the conventional equipment resists internal and external impacts, and the pipeline is easy to break, and the following scheme is provided: the pressure-resistant drainage PVC-U spiral pipe comprises a spiral pipe, the spiral pipe comprises a wear-resistant layer, a compression-resistant layer, a buffer layer and a sealing layer, the compression-resistant layer is injection-molded in the wear-resistant layer, the buffer layer is injection-molded in the compression-resistant layer, the sealing layer is injection-molded in the buffer layer, a plurality of spiral wires are spirally cast in the spiral pipe at equal intervals, and connecting structures are arranged at the two ends of the spiral pipe. The wear-resistant layer, the compression-resistant layer, the buffer layer and the sealing layer jointly form the spiral pipe, so that the buffer layer made of PVC materials and the compression-resistant layer made of brass jointly resist internal and external impact force, and the problem of pipeline breakage caused by the impact force is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage pipe fittings, in particular to a pressure-resistant drainage PVC-U spiral pipe. Background Art

[0002] PVC-U spiral pipe is a rigid polyvinyl chloride pipe, which is formed by hot pressing after polyvinyl chloride resin is combined with stabilizers, lubricants, etc. It is the earliest plastic pipe to be developed and applied. PVC pipe has strong corrosion resistance, easy bonding, low price and hard texture, but due to the leakage of PVC monomer and additives, it is only suitable for water supply systems with a conveying temperature not exceeding 45°C. Plastic pipes are used for drainage, wastewater, chemicals, heating and cooling liquids, food, ultra-pure liquids, mud, gas, compressed air and vacuum system applications.

[0003] After searching, a patent with publication number CN211040126U discloses a wear-resistant PVC pipe, which relates to the field of PVC pipe technology, including a PVC pipe main body, a first PVC pipe is arranged at one end of the PVC pipe main body, a second PVC pipe is installed at one end of the first PVC pipe, a connecting pipe is arranged between the first PVC pipe and the second PVC pipe, and connecting heads are arranged at both ends of the first PVC pipe and the second PVC pipe, and two pipe clamps are arranged at both ends of the connecting pipe.

[0004] There is no buffer structure inside the existing equipment, and it is unable to perform buffering when resisting internal and external impacts, resulting in the problem of easy breakage of the pipe. Therefore, we proposed a pressure-resistant drainage PVC-U spiral pipe to solve the above problem. Utility Model Content

[0005] The utility model aims to solve the disadvantage of poor pressure resistance and proposes a pressure-resistant drainage PVC-U spiral pipe.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a pressure-resistant drainage PVC-U spiral pipe, comprising a spiral pipe,

[0007] The spiral tube comprises a wear-resistant layer, a pressure-resistant layer, a buffer layer and a sealing layer;

[0008] The anti-pressure layer is injection-molded inside the wear-resistant layer, the buffer layer is injection-molded inside the anti-pressure layer, and the sealing layer is injection-molded inside the buffer layer;

[0009] A plurality of spiral conductors are equidistantly cast in a spiral inside the spiral tube, and connection structures are arranged at both ends of the spiral tube.

[0010] Preferably, the connection structure includes a connector 1 injection-molded on one end of the spiral tube, and a connector 2 injection-molded on the other end of the spiral tube.

[0011] Preferably, the external thread provided on the outside of the connector 1 cooperates with the corresponding internal thread provided on the inside of the connector 2.

[0012] Preferably, a sealing ring 1 is installed on the outside of the connector 1 and close to one end of the spiral tube through an opened groove.

[0013] Preferably, a sealing ring 2 is installed inside the second connector and close to one end of the spiral tube through an opened groove.

[0014] Preferably, the wear-resistant layer is made of PVC-U material, the pressure-resistant layer is made of brass, the buffer layer is made of PVC material, and the sealing layer is made of rubber.

[0015] Preferably, the helical angle of the plurality of helical wires is 10-20 degrees.

[0016] In the utility model, the pressure-resistant drainage PVC-U spiral pipe is:

[0017] 1. The utility model comprises a wear-resistant layer, a pressure-resistant layer, a buffer layer and a sealing layer to form a spiral pipe, so that the buffer layer made of PVC material and the pressure-resistant layer made of brass can jointly resist the internal and external impact forces, thereby avoiding the problem of pipe rupture caused by impact forces;

[0018] 2. The utility model provides connection structures at both ends of the spiral tube, so that the external thread provided on the outside of the connector 1 matches with the corresponding internal thread provided on the inside of the connector 2, thereby improving the docking behavior of the spiral tube and effectively improving the tightness of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a pressure-resistant drainage PVC-U spiral pipe proposed by the utility model;

[0020] Figure 2 This is a schematic structural diagram of a front cross-sectional view of a pressure-resistant drainage PVC-U spiral pipe proposed by the utility model;

[0021] Figure 3 This is a schematic structural diagram of part A of a pressure-resistant drainage PVC-U spiral pipe proposed by the utility model;

[0022] Figure 4 This is a structural schematic diagram of the B part of a pressure-resistant drainage PVC-U spiral pipe proposed by the utility model;

[0023] Figure 5 This is a schematic structural diagram of the C portion of a pressure-resistant drainage PVC-U spiral pipe proposed by the utility model.

[0024] In the figure: 1. spiral tube; 101. wear-resistant layer; 102. pressure-resistant layer; 103. buffer layer; 104. sealing layer; 2. spiral conductor; 3. connection structure; 301. connector 1; 302. external thread; 303. connector 2; 304. internal thread; 305. sealing ring 1; 306. sealing ring 2. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1-5 , a pressure-resistant drainage PVC-U spiral pipe, comprising a spiral pipe 1,

[0027] The spiral tube 1 comprises a wear-resistant layer 101, a pressure-resistant layer 102, a buffer layer 103, and a sealing layer 104;

[0028] The wear-resistant layer 101 is internally molded with a pressure-resistant layer 102, the pressure-resistant layer 102 is internally molded with a buffer layer 103, and the buffer layer 103 is internally molded with a sealing layer 104;

[0029] A plurality of spiral conductors 2 are equidistantly cast in a spiral manner inside the spiral tube 1 , and connection structures 3 are provided at both ends of the spiral tube 1 .

[0030] In this embodiment, the connection structure 3 includes a first connector 301 injection-molded at one end of the spiral tube 1 , and a second connector 303 injection-molded at the other end of the spiral tube 1 .

[0031] By adopting the above solution, by providing a connector 1 301 at one end of the spiral tube 1 and injecting a connector 2 303 at the other end of the spiral tube 1, the two spiral tubes 1 can be butted together to avoid the problem of poor connection and sealing.

[0032] In this embodiment, the external thread 302 provided on the outside of the first connector 301 matches with the internal thread 304 provided on the inside of the second connector 303 .

[0033] By adopting the above solution, the external thread 302 opened on the outside of the connector 1 301 is matched with the internal thread 304 opened inside the connector 2 303, so as to realize the threaded connection between the connector 1 301 and the connector 2 303, and effectively improve the connection sealing behavior.

[0034] In this embodiment, a sealing ring 305 is installed on the outside of the connector 301 and at one end close to the spiral tube 1 through a groove.

[0035] By adopting the above solution, a sealing ring 305 is installed through a groove opened outside the connector 301 and close to one end of the spiral tube 1, thereby increasing the sealing behavior and avoiding leakage problems at the connection.

[0036] In this embodiment, a second sealing ring 306 is installed inside the second connector 303 and at one end close to the spiral tube 1 through a groove.

[0037] By adopting the above solution, a second sealing ring 306 is installed through a groove opened inside the second connector 303 and close to one end of the spiral tube 1, thereby achieving the purpose of sealing the connection.

[0038] In this embodiment, the wear-resistant layer 101 is made of PVC-U material, the pressure-resistant layer 102 is made of brass, the buffer layer 103 is made of PVC material, and the sealing layer 104 is made of rubber.

[0039] By adopting the above scheme, the wear-resistant layer 101 is made of PVC-U material, the pressure-resistant layer 102 is made of brass, the buffer layer 103 is made of PVC material, and the sealing layer 104 is made of rubber, so as to increase the wear resistance, pressure resistance and sealing ability of the spiral tube 1.

[0040] In this embodiment, the spiral angle of the plurality of spiral conductors 2 is 10-20 degrees.

[0041] By adopting the above solution, the spiral angles of the spiral conductors 2 are set to 10-20 degrees, so as to guide the flow of the fluid and avoid turbulence that causes noise.

[0042] In the utility model, when in use, the connection between the two spiral tubes 1 is achieved by matching the external thread 302 provided on the outside of the connector 1 301 with the corresponding internal thread 304 provided on the inside of the connector 2 303, and the sealing ring 1 305 and the sealing ring 2 306 perform a sealing behavior, wherein a plurality of spiral conductors 2 guide the flow of the fluid to avoid turbulence, and the buffer layer 103 made of PVC material and the pressure-resistant layer 102 made of brass are used to jointly resist internal and external impact forces.

[0043] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pressure-resistant drainage PVC-U spiral pipe, comprising a spiral pipe (1), characterized in that: The spiral tube (1) comprises a wear-resistant layer (101), a pressure-resistant layer (102), a buffer layer (103), and a sealing layer (104); The anti-pressure layer (102) is injection-molded inside the wear-resistant layer (101), the buffer layer (103) is injection-molded inside the anti-pressure layer (102), and the sealing layer (104) is injection-molded inside the buffer layer (103); A plurality of spiral conductors (2) are equidistantly cast in a spiral pattern inside the spiral tube (1), and connection structures (3) are provided at both ends of the spiral tube (1).

2. The pressure-resistant drainage PVC-U spiral pipe according to claim 1, characterized in that: The connection structure (3) comprises a first connector (301) injection-molded at one end of the spiral tube (1), and a second connector (303) injection-molded at the other end of the spiral tube (1).

3. The pressure-resistant drainage PVC-U spiral pipe according to claim 2, characterized in that: The external thread (302) provided on the outside of the connector 1 (301) matches with the internal thread (304) provided on the inside of the connector 2 (303) accordingly.

4. The pressure-resistant drainage PVC-U spiral pipe according to claim 2, characterized in that: A sealing ring 1 (305) is installed on the outside of the connector 1 (301) and at one end close to the spiral tube (1) through a groove.

5. The pressure-resistant drainage PVC-U spiral pipe according to claim 2, characterized in that: A second sealing ring (306) is installed inside the second connector (303) and at one end close to the spiral tube (1) through a groove.

6. The pressure-resistant drainage PVC-U spiral pipe according to claim 1, characterized in that: The wear-resistant layer (101) is made of PVC-U material, the pressure-resistant layer (102) is made of brass, the buffer layer (103) is made of PVC material, and the sealing layer (104) is made of rubber.

7. The pressure-resistant drainage PVC-U spiral pipe according to claim 1, characterized in that: The helical angle of some of the helical wires (2) is 10-20 degrees.

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