Compression-resistant PVC (polyvinyl chloride) composite pipe

Abstract

The utility model relates to the technical field of PVC composite pipes, in particular to a compression-resistant PVC composite pipe which comprises a composite pipe body, the composite pipe body comprises an inner-layer pipe and an outer-layer pipe, reinforcing layers which are evenly distributed are arranged between the inner-layer pipe and the outer-layer pipe, filling cavities which are distributed at intervals are formed by the inner-layer pipe and the outer-layer pipe through the reinforcing layers, and the inner-layer pipe and the outer-layer pipe are communicated through the filling cavities. The outer wall of the inner-layer pipe is provided with first reinforcing strips which are distributed in the circumferential direction, and the inner wall of the outer-layer pipe is provided with second reinforcing strips which are evenly distributed and correspond to the first reinforcing strips. The reinforcing layer is arranged between the inner-layer pipe and the outer-layer pipe, and the first reinforcing strips and the second reinforcing strips which are staggered are arranged on the inner-layer pipe and the outer-layer pipe, so that the whole composite pipe body has a compression-resistant effect; the movable supporting plates are arranged on the first reinforcing strips and the second reinforcing strips, so that when the supporting plates movably abut against the outer wall of the inner-layer pipe and the inner wall of the outer-layer pipe, the borne pressure can be shared, the compression resistance of the composite pipe body is improved, and the conveying efficiency of the composite pipeline is also improved.

Description

Technical Field

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

[0002] There are two or more electrode systems installed in the shell of an electron tube. Each electrode system independently passes electrons through the flow to achieve its own function. This type of electron tube is called a compound tube.

[0003] At present, the composite pipe is made of PVC, which is a thermoplastic resin composite pipe formed by the polymerization of vinyl chloride under the action of an initiator. Due to the influence of the material of the composite pipe itself, the composite pipe has poor compression resistance after production and processing, and there is no compression reinforcement strip or other reinforcement structure on the composite pipe. When the composite pipe is subjected to external pressure or the expansion of the transported object, the outer wall and inner wall of the composite pipe will be excessively squeezed. Due to the influence of the material of the composite pipe itself, the composite pipe will crack and break during use, which not only affects the overall sealing effect of the composite pipe, but also affects the service life of the composite pipe. Utility Model Content

[0004] The utility model aims to solve the problem of low compression resistance of PVC composite pipes in the prior art and proposes a compression-resistant PVC composite pipe.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pressure-resistant PVC composite pipe comprises a composite pipe body, wherein the composite pipe body comprises an inner layer pipe and an outer layer pipe, a uniformly distributed reinforcement layer is arranged between the inner layer pipe and the outer layer pipe, and the inner layer pipe and the outer layer pipe form filling cavities distributed at intervals through the reinforcement layer, a circumferentially distributed reinforcement strip 1 is arranged on the outer wall of the inner layer pipe, and a uniformly distributed reinforcement strip 2 corresponding to the reinforcement strip 1 is arranged on the inner wall of the outer layer pipe.

[0007] Preferably, the reinforcement strip 1 and the reinforcement strip 2 are of a trapezoidal structure, and the reinforcement strip 1 and the reinforcement strip 2 are arranged alternately, and the reinforcement strip 1 and the reinforcement strip 2 are made of rubber.

[0008] Preferably, the reinforcement strips 1 and 2 are provided with cavities, and rubber layers corresponding to the cavities are laid on the reinforcement strips 1 and 2. Two movable rods are movably sleeved in the rubber layer, and a support plate movably abutting against the outer wall of the inner tube and the inner wall of the outer tube is provided between the two movable rods. The inner tube and the outer tube are provided with sponge strips arranged in an alternating manner.

[0009] Preferably, a silicone pad is provided in the cavity, and a spring steel sheet is provided in the cavity, which is located above the silicone pad and movably abuts against the moving rod.

[0010] Preferably, the moving rod and the support plate extend to one side of the filling cavity, and the support plate is an arc-shaped structure adapted to the outer wall of the inner tube and the inner wall of the outer tube.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. The utility model provides a reinforcement layer between the inner tube and the outer tube, and provides offset reinforcement strips 1 and 2 on the inner tube and the outer tube, so that the composite tube body as a whole has a compression resistance effect.

[0013] 2. The utility model provides movable support plates on the first reinforcement strip and the second reinforcement strip, so that the support plates can distribute the pressure when they move against the outer wall of the inner layer pipe and the inner wall of the outer layer pipe, which not only improves the pressure resistance of the composite pipe body, but also improves the efficiency of composite pipeline transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a side sectional view of a compression-resistant PVC composite pipe proposed by the utility model;

[0015] Figure 2 This is a cross-sectional view of a pressure-resistant PVC composite pipe proposed by the utility model;

[0016] Figure 3 This is an enlarged schematic diagram of structure A of a pressure-resistant PVC composite pipe proposed by the utility model.

[0017] In the figure: 1. composite tube body; 101. inner tube; 102. outer tube; 2. reinforcement layer; 3. filling cavity; 4. reinforcement strip 1; 5. reinforcement strip 2; 6. cavity; 7. silicone pad; 8. spring steel sheet; 9. rubber layer; 10. moving rod; 11. support plate; 12. sponge strip. DETAILED DESCRIPTION

[0018] 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.

[0019] Reference Figure 1-Figure 3 A pressure-resistant PVC composite pipe comprises a composite pipe body 1, wherein the composite pipe body 1 comprises an inner layer pipe 101 and an outer layer pipe 102;

[0020] A uniformly distributed reinforcement layer 2 is provided between the inner tube 101 and the outer tube 102, and the inner tube 101 and the outer tube 102 form a filling cavity 3 distributed at intervals through the reinforcement layer 2. A circumferentially distributed reinforcement strip 1 4 is provided on the outer wall of the inner tube 101, and a uniformly distributed reinforcement strip 2 5 corresponding to the reinforcement strip 1 4 is provided on the inner wall of the outer tube 102. By providing a uniformly distributed reinforcement layer 2 between the inner tube 101 and the outer tube 102, and by providing staggered sponge strips 12 on the inner tube 101 and the outer tube 102, the support strength of the inner tube 101 and the outer tube 102 can be increased;

[0021] The reinforcement strip 1 4 and the reinforcement strip 2 5 are of trapezoidal structure. Figure 1 As shown, the reinforcement strip 1 4 and the reinforcement strip 2 5 are arranged alternately, and the reinforcement strip 1 4 and the reinforcement strip 2 5 are made of rubber;

[0022] A cavity 6 is provided in the reinforcement strip 1 4 and the reinforcement strip 2 5, a rubber layer 9 corresponding to the cavity 6 is laid on the reinforcement strip 1 4 and the reinforcement strip 2 5, two moving rods 10 are movably sleeved in the rubber layer 9, a silicone pad 7 is provided in the cavity 6, and the moving rod 10 can be reset by the mutual cooperation of the silicone pad 7 and the spring steel sheet 8;

[0023] A spring steel sheet 8 is provided in the cavity 6 and is located above the silicone pad 7 and is movably supported against the moving rod 10, and a support plate 11 is provided between the two moving rods 10 and is movably supported against the outer wall of the inner tube 101 and the inner wall of the outer tube 102;

[0024] The inner tube 101 and the outer tube 102 are provided with staggered sponge strips 12, the moving rod 10 and the support plate 11 extend to one side of the filling cavity 3, and the support plate 11 is an arc-shaped structure adapted to the outer wall of the inner tube 101 and the inner wall of the outer tube 102;

[0025] When the inner tube 101 is stressed, the support plate 11 extends outward, and when the support plate 11 moves, it moves against the inner wall of the outer tube 102. After the support plate 11 and the inner wall of the outer tube 102 are squeezed, the support plate 11 and the moving rod 10 can be driven to move into the cavity 6 and squeeze the spring steel sheet 8 and the silicone pad 7, and the pressure on the inner tube 101 can be divided by multiple support plates 11;

[0026] When the outer wall of the outer tube 102 is compressed, the support plate 11 extends inward, and the support plate 11 moves and counteracts the outer wall of the inner tube 101. After the support plate 11 and the outer wall of the inner tube 101 are squeezed, the support plate 11 and the moving rod 10 can be driven to move into the cavity 6 and squeeze the spring steel sheet 8 and the silicone pad 7. The pressure on the outer tube 102 can be divided through multiple support plates 11, which not only improves the pressure resistance of the composite tube body 1, but also improves the operating efficiency of the composite tube body 1.

[0027] The functional principle of the utility model can be explained through the following operation modes:

[0028] When the outer wall of the composite pipe body 1 is subjected to pressure during use;

[0029] When the outer wall of the composite pipe body 1 is compressed, the pressure is divided by the evenly distributed reinforcement layer 2 and the sponge strips 12;

[0030] At the same time, the outer tube 102 drives the reinforcement strip 25 downward after being stressed, so that the reinforcement strip 25 drives the rubber layer 9, the moving rod 10, and the support plate 11 to move inward. When the support plate 11 moves in the filling cavity 3, it will move against the outer wall of the inner tube 101. The multiple support plates 11 will distribute the pressure on the outer wall of the inner tube 101.

[0031] After the support plate 11 is compressed, it drives the moving rod 10 to contract and applies pressure to the spring steel sheet 8 and the silicone pad 7;

[0032] When the outer wall of the composite pipe body 1 is not subjected to pressure, the support plate 11 returns to its initial position under the action of the spring steel sheet 8 and the silicone pad 7;

[0033] When the inner wall of the composite pipe body 1 is subjected to pressure during transportation;

[0034] After the inner wall of the composite pipe body 1 is compressed, the pressure is divided by the evenly distributed reinforcement layer 2 and the sponge strips 12;

[0035] At the same time, the inner wall of the inner tube 101 is compressed, driving the reinforcement strip 4 to expand outward, and the reinforcement strip 4 drives the rubber layer 9 and the moving rod 10 and the support plate 11 to move outward. When the support plate 11 moves in the filling cavity 3, it will move against the inner wall of the outer tube 102. The multiple support plates 11 will distribute the pressure on the inner wall of the outer tube 102.

[0036] After the support plate 11 and the inner wall of the outer tube 102 are movably pressed against each other, the moving rod 10 is driven to contract and press the spring steel sheet 8 and the silicone pad 7;

[0037] When the inner wall of the composite pipe body 1 is no longer subjected to pressure, the support plate 11 returns to its initial position under the action of the spring steel sheet 8 and the silicone pad 7 .

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressure-resistant PVC composite pipe, comprising a composite pipe body (1), wherein the composite pipe body (1) comprises an inner layer pipe (101) and an outer layer pipe (102), characterized in that: A uniformly distributed reinforcement layer (2) is provided between the inner tube (101) and the outer tube (102); the inner tube (101) and the outer tube (102) form filling cavities (3) distributed at intervals through the reinforcement layer (2); a circumferentially distributed reinforcement strip one (4) is provided on the outer wall of the inner tube (101); and a uniformly distributed reinforcement strip two (5) corresponding to the reinforcement strip one (4) is provided on the inner wall of the outer tube (102).

2. A pressure-resistant PVC composite pipe according to claim 1, characterized in that: The reinforcing strip 1 (4) and the reinforcing strip 2 (5) are of a trapezoidal structure, and the reinforcing strip 1 (4) and the reinforcing strip 2 (5) are arranged alternately, and the reinforcing strip 1 (4) and the reinforcing strip 2 (5) are made of rubber.

3. The pressure-resistant PVC composite pipe according to claim 1, characterized in that: The first reinforcement strip (4) and the second reinforcement strip (5) are provided with cavities (6); a rubber layer (9) corresponding to the cavity (6) is laid on the top of the first reinforcement strip (4) and the second reinforcement strip (5); two movable rods (10) are movably sleeved in the rubber layer (9); a support plate (11) movably abutting against the outer wall of the inner layer tube (101) and the inner wall of the outer layer tube (102) is provided between the two movable rods (10); and sponge strips (12) arranged in an alternating manner are provided on the inner layer tube (101) and the outer layer tube (102).

4. A pressure-resistant PVC composite pipe according to claim 3, characterized in that: A silica gel pad (7) is arranged in the cavity (6), and a spring steel sheet (8) is arranged in the cavity (6) and is located above the silica gel pad (7) and is movably opposed to the moving rod (10).

5. The pressure-resistant PVC composite pipe according to claim 3, characterized in that: The moving rod (10) and the support plate (11) extend to one side of the filling cavity (3); the support plate (11) is an arc-shaped structure adapted to the outer wall of the inner tube (101) and the inner wall of the outer tube (102).

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