High-strength HDPE (High-Density Polyethylene) steel strip reinforced spiral corrugated pipe

Abstract

The utility model discloses a high-strength HDPE (high-density polyethylene) steel belt reinforced spiral corrugated pipe which is characterized in that a connecting cap and a connector are respectively mounted at opposite ends of a pipeline A and a pipeline B, a sealing gasket is arranged on the inner wall, facing the connector, of the connecting cap, an annular groove A is formed in the outer surface of the connector, four inner grooves are coaxially formed in the connecting cap in an array manner, and the inner grooves are communicated with the annular groove A; an insertion rod is inserted into the inner groove, and the bottom of the insertion rod is matched with the annular groove A; a shaft shoulder is arranged on the outer surface of the inserting rod, the outer surface of the inserting rod is sleeved with a spring A, and the two ends of the spring A abut against the shaft shoulder and the inner wall of the inner groove respectively. The connecting head is inserted into the connecting cap, under the action of the spring A, the inserting rod can be pushed to be inserted into the annular groove A, quick connection between pipelines is achieved, quick disassembly can be achieved only by pulling the inserting rod out of the annular groove A, the influence of vibration can be avoided, and the stability of connection between the pipelines is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated pipes, in particular to a high-strength HDPE steel belt reinforced spiral corrugated pipe. Background Art

[0002] HDPE steel belt reinforced spiral corrugated pipe is a pipe used to transport liquids or gases. It is made of high-density polyethylene (HDPE) and has good chemical stability and corrosion resistance. Inside, there is a spiral steel belt reinforcement structure, which makes the pipe have high compressive resistance and strength and can withstand greater external pressure.

[0003] The Chinese patent with announcement number CN21612277U discloses a high-strength HDPE steel belt reinforced spiral corrugated pipe. The corrugated pipe is connected by inserting a special-shaped sealing connector into a plug-in circular groove on the close end of two high-strength HDPE steel belt reinforced spiral corrugated pipe bodies, and then the first arc clamp and the second arc clamp are sequentially clamped at the connection of the two high-strength HDPE steel belt reinforced spiral corrugated pipe bodies, and then the bolts are inserted into the corresponding threaded holes, and the nuts are tightened with tools to achieve the connection of the two high-strength HDPE steel belt reinforced spiral corrugated pipe bodies. Compared with the traditional sleeve ring clamping, it has better sealing, safer use, and stronger applicability.

[0004] However, when connecting two pipes, the above patent requires assembling the special-shaped sealing connector, the first arc-shaped clamp and the second arc-shaped clamp with the pipe in sequence, and then using tools to tighten the nuts and bolts. The connection and disassembly procedures are cumbersome and inefficient. In addition, when the pipe is transporting liquid, the flow rate and pressure changes of the liquid may cause the pipe to vibrate, and long-term vibration may easily cause the nut to loosen, which may easily cause leakage at the pipe connection. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a high-strength HDPE steel belt reinforced spiral corrugated pipe.

[0006] The utility model provides the following technical solution: a high-strength HDPE steel belt reinforced spiral corrugated pipe, comprising a pipe A and a pipe B, a connecting cap and a connecting head are respectively installed at opposite ends of the pipe A and the pipe B, a sealing gasket is arranged on the inner wall of the connecting cap facing the connecting head, an annular groove A is provided on the outer surface of the connecting head, four inner grooves are arranged in a coaxial array inside the connecting cap, a plug rod is inserted inside the inner groove, and the bottom of the plug rod is adapted to the annular groove A. A shaft shoulder is provided on the outer surface of the plug rod, a spring A is sleeved on the outer surface of the plug rod, and the two ends of the spring A are respectively in contact with the shaft shoulder and the inner wall of the inner groove.

[0007] Preferably, an annular groove B is formed on the inner wall of the connecting cap facing the annular groove A, and a sealing ring is arranged inside the annular groove B.

[0008] Preferably, the internal coaxial array of the connector is provided with four air cavities, a piston is sealed inside the air cavity, the outer surface of the piston is connected to the rod body, an air bag is installed inside the annular groove B, a connecting tube is installed inside the air cavity, and the end of the connecting tube is connected to the air bag.

[0009] Preferably, the internal coaxial array of the connecting cap is provided with four annular grooves, and the annular grooves are coaxially arranged with the insertion rod, an annular plate is arranged inside the annular groove, and the inner diameter of the annular plate matches the diameter of the end of the insertion rod, and a spring B is arranged inside the annular groove, and the two ends of the spring B are respectively abutted against the annular plate and the inner wall of the annular groove.

[0010] Preferably, the materials of spring A and spring B are both carbon spring steel, and the outer surfaces of spring A and spring B are coated with anti-rust paint.

[0011] Preferably, a ball is provided at the end of the insertion rod facing the annular groove A.

[0012] Compared with the existing technology, the beneficial effects of the utility model are:

[0013] (1) The utility model inserts the connector into the interior of the connector cap so that the inclined surface at the end of the connector squeezes the plug rod, thereby driving the plug rod to move upward and compressing the spring A. When the end of the connector is pressed against the sealing gasket, the annular groove A corresponds to the plug rod. At this time, under the action of the spring A, the plug rod can be pushed into the annular groove A, thereby achieving the purpose of quick connection between the connector cap and the connector. The purpose of quick disassembly can be achieved by pulling the plug rod out of the annular groove A. The installation and disassembly efficiency is high, and the elastic force of the spring A always acts on the plug rod. Even if the pipeline vibrates, it can still ensure that the plug rod is stably inserted in the annular groove A and is not affected by the vibration, thereby improving the stability of the connection between the pipelines and avoiding leakage.

[0014] (2) The utility model has four air cavities in a coaxial array inside the connector, a piston is sealed inside the air cavity, a rod is connected to the outer surface of the piston, an air bag is installed inside the annular groove B, a connecting pipe is installed inside the air cavity, and the end of the connecting pipe is connected to the air bag. When the connector is inserted into the connecting cap, the connector pushes the rod to move, thereby driving the piston to compress the internal space of the air cavity, so that the gas inside the air cavity enters the air bag through the connecting pipe, causing the air bag to expand and push the sealing ring to tightly wrap around the outer surface of the connector, thereby improving the sealing effect of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the connection state of the connection cap and the connection head in the utility model;

[0017] Figure 3 for Figure 2 A is an enlarged schematic diagram;

[0018] Figure 4 It is a structural schematic diagram of pipeline B in the present utility model. DETAILED DESCRIPTION

[0019] like Figures 1 to 4 As shown, a high-strength HDPE steel belt reinforced spiral corrugated pipe includes a pipe A1, a pipe B2, a connecting cap 3, a connecting head 4, an annular groove A5, an inner groove 6, an insert rod 7, a shoulder 8, a spring A9, a sealing gasket 10, an annular groove B11, a sealing ring 12, an air cavity 13, a piston 14, a rod body 15, an air bag 16, a connecting pipe 17, an annular groove 18, an annular plate 19, a spring B20 and a ball 21.

[0020] 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.

[0021] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figures 1 to 4As shown, a connecting cap 3 and a connecting head 4 are respectively installed at opposite ends of the pipe A1 and the pipe B2, a sealing gasket 10 is provided on the inner wall of the connecting cap 3 facing the connecting head 4, an annular groove A5 is provided on the outer surface of the connecting head 4, four inner grooves 6 are provided in a coaxial array inside the connecting cap 3, an insert rod 7 is inserted inside the inner groove 6, and the bottom of the insert rod 7 is adapted to the annular groove A5. The four insert rods 7 are positioned and matched with the annular groove A5 from four directions, which can ensure that the pipe A1 and the pipe B2 are evenly stressed when connected, thereby improving the reliability of the connection.

[0024] The outer surface of the plug rod 7 is provided with a shaft shoulder 8, and the outer surface of the plug rod 7 is sleeved with a spring A9, and the two ends of the spring A9 are respectively in contact with the shaft shoulder 8 and the inner wall of the inner groove 6. The elastic force of the spring A9 always acts on the plug rod 7, and even if the pipeline vibrates, it can still ensure that the plug rod 7 is stably inserted in the annular groove A5 and is not affected by the vibration, thereby improving the stability of the connection between the pipelines and avoiding leakage. The end of the plug rod 7 facing the annular groove A5 is provided with a ball 21. The provision of the ball 21 can reduce the friction resistance between the plug rod 7 and the connector 4, and improve the smoothness of the connection between the pipelines.

[0025] An annular groove B11 is provided on the inner wall of the connecting cap 3 facing the annular groove A5, and a sealing ring 12 is provided inside the annular groove B11. When the connector 4 is inserted into the connecting cap 3, the sealing ring 12 is wrapped around the outer surface of the connector 4 for secondary sealing, thereby further improving the anti-leakage situation and ensuring the stable use of the pipeline.

[0026] The internal coaxial array of the connector 4 is provided with four air cavities 13, the internal sealing of the air cavity 13 is provided with a piston 14, the outer surface of the piston 14 is connected to a rod body 15, an air bag 16 is installed inside the annular groove B11, a connecting tube 17 is installed inside the air cavity 13, and the end of the connecting tube 17 is connected to the air bag 16. When the connector 4 is inserted into the connecting cap 3, the connector 4 pushes the rod body 15 to move, thereby driving the piston 14 to compress the internal space of the air cavity 13, so that the gas inside the air cavity 13 enters the air bag 16 through the connecting tube 17, so that the air bag 16 expands and pushes the sealing ring 12 to tightly wrap around the outer surface of the connector 4, thereby improving the sealing effect of the sealing ring 12.

[0027] The internal coaxial array of the connecting cap 3 is provided with four annular grooves 18, and the annular groove 18 is coaxially arranged with the insertion rod 7, an annular plate 19 is arranged inside the annular groove 18, and the inner diameter of the annular plate 19 matches the diameter of the end of the insertion rod 7, and a spring B20 is arranged inside the annular groove 18, and the two ends of the spring B20 are respectively abutted against the inner wall of the annular plate 19 and the annular groove 18. When the insertion rod 7 is inserted into the annular groove A5, the end of the insertion rod 7 is located on the inner side of the annular plate 19 and flush with it. If the pipeline is to be disassembled, the annular plate 19 must be pressed downward first to expose the insertion rod 7, and then the insertion rod 7 is grasped and pulled upward to disassemble the pipeline. By adding the disassembly steps, misoperation can be avoided, which may cause the connection between the connecting cap 3 and the connector 4 to become loose.

[0028] Spring A9 and spring B20 are both made of carbon spring steel. The outer surfaces of spring A9 and spring B20 are coated with anti-rust paint. Carbon spring steel has good elasticity, strength and fatigue resistance. By coating with anti-rust paint, the corrosion resistance of spring A9 and spring B20 can be improved and the service life can be increased.

[0029] The working principle of the utility model is as follows:

[0030] When it is necessary to connect the pipe A1 and the pipe B2, first insert the connector 4 into the inside of the connecting cap 3, and the inclined surface at the end of the connector 4 squeezes the plug rod 7, thereby driving the plug rod 7 to move upward and compressing the spring A9. When the end of the connector 4 is pressed against the sealing gasket 10, the annular groove A5 just corresponds to the plug rod 7. At this time, under the action of the spring A9, the plug rod 7 can be pushed to be inserted into the annular groove A5, so as to achieve the purpose of quick connection between the connecting cap 3 and the connector 4. The sealing gasket 10 seals the connection, and in the process of inserting the connector 4 into the connecting cap 3, the connector 4 will push the rod body 15 to move, thereby driving the piston 14 to compress the air chamber 13. The gas in the air cavity 13 enters the airbag 16 through the connecting tube 17, causing the airbag 16 to expand and push the sealing ring 12 to tightly wrap around the outer surface of the connector 4, thereby performing a secondary seal on the connection. The double seal of the sealing gasket 10 and the sealing ring 12 can ensure the reliability of the connection between the pipeline A1 and the pipeline B2 to avoid leakage. When disassembly is required, the annular plate 19 needs to be pressed downward to expose the insertion rod 7, and then the insertion rod 7 is grasped and pulled upward to disassemble the pipeline. By adding the disassembly steps, misoperation can be avoided, which may cause the connection between the connecting cap 3 and the connector 4 to become loose.

[0031] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A high-strength HDPE steel belt reinforced spiral corrugated pipe, comprising a pipe A (1) and a pipe B (2), characterized in that: A connecting cap (3) and a connecting head (4) are respectively installed at opposite ends of the pipe A (1) and the pipe B (2); a sealing gasket (10) is arranged on the inner wall of the connecting cap (3) facing the connecting head (4); an annular groove A (5) is provided on the outer surface of the connecting head (4); four inner grooves (6) are arranged in a coaxial array inside the connecting cap (3); a plug rod (7) is inserted into the inner part of the inner groove (6), and the bottom of the plug rod (7) is matched with the annular groove A (5); a shoulder (8) is arranged on the outer surface of the plug rod (7); a spring A (9) is sleeved on the outer surface of the plug rod (7), and two ends of the spring A (9) are respectively in contact with the shoulder (8) and the inner wall of the inner groove (6).

2. The high-strength HDPE steel belt reinforced spiral corrugated pipe according to claim 1, characterized in that: The connecting cap (3) is provided with an annular groove B (11) on the inner wall facing the annular groove A (5), and a sealing ring (12) is arranged inside the annular groove B (11).

3. The high-strength HDPE steel belt reinforced spiral corrugated pipe according to claim 2, characterized in that: The connector (4) has four air cavities (13) in a coaxial array inside, a piston (14) is sealed inside the air cavity (13), a rod (15) is connected to the outer surface of the piston (14), an air bag (16) is installed inside the annular groove B (11), a connecting tube (17) is installed inside the air cavity (13), and the end of the connecting tube (17) is connected to the air bag (16).

4. The high-strength HDPE steel belt reinforced spiral corrugated pipe according to claim 3, characterized in that: The connecting cap (3) is provided with four annular grooves (18) in a coaxial array inside, and the annular groove (18) is coaxially arranged with the insertion rod (7). An annular plate (19) is arranged inside the annular groove (18), and the inner diameter of the annular plate (19) matches the diameter of the end of the insertion rod (7). A spring B (20) is arranged inside the annular groove (18), and the two ends of the spring B (20) are respectively in contact with the inner wall of the annular plate (19) and the annular groove (18).

5. The high-strength HDPE steel belt reinforced spiral corrugated pipe according to claim 4, characterized in that: The materials of the spring A (9) and the spring B (20) are both carbon spring steel, and the outer surfaces of the spring A (9) and the spring B (20) are both coated with anti-rust paint.

6. The high-strength HDPE steel belt reinforced spiral corrugated pipe according to claim 5, characterized in that: A ball (21) is provided at the end of the insertion rod (7) facing the annular groove A (5).

Images