High-temperature-resistant PE steel wire framework pipe and production device thereof

Abstract

The invention discloses a high-temperature-resistant PE steel wire framework pipe and a production device thereof, the steel wire framework pipe comprises an inner core pipe, a first hot melting layer is arranged on the outer wall of the inner core pipe, and a steel wire mesh structure layer is arranged on the outer wall of the first hot melting layer. The steel wires wrapped in the two directions are wrapped at the same time, the speed of the steel wires wrapped clockwise is slightly higher than that of the steel wires wrapped anticlockwise in the wrapping process of the first half circle, and then the wrapping speed of the steel wires wrapped clockwise is just changed with that of the steel wires wrapped anticlockwise in the wrapping process of the second half circle and is slightly slower than that of the steel wires wrapped anticlockwise. When the process is repeated, the clockwise wrapping steel wires and the anticlockwise wrapping steel wires press the clockwise wrapping steel wires from the upper part when the odd number of the clockwise wrapping steel wires and the anticlockwise wrapping steel wires are connected, and the clockwise wrapping steel wires press the anticlockwise wrapping steel wires from the upper part when the even number of the clockwise wrapping steel wires and the anticlockwise wrapping steel wires are connected. The clockwise wrapping steel wires and the anticlockwise wrapping steel wires are staggered and mutually pressed on the outer wall of the pipe body, so that the steel wire structure is more stable, and the phenomenon of slippage is difficult to occur.

Description

Technical Field

[0001] The present invention relates to the technical field of steel wire skeleton pipes, and particularly to a high-temperature resistant PE steel wire skeleton pipe and its production device. Background Art

[0002] The steel wire mesh skeleton plastic composite pipe is an improved new type of steel skeleton plastic composite pipe. This kind of pipe is also called SRTP pipe. This new type of pipe uses high-strength plastic-coated steel wire mesh skeleton and thermoplastic polyethylene as raw materials. The steel wire winding mesh is used as the skeleton reinforcement of the polyethylene plastic pipe, with high-density polyethylene (HDPE) as the matrix. A high-performance HDPE modified bonding resin is used to tightly connect the steel wire skeleton with the inner and outer layers of high-density polyethylene, making it have excellent composite effect. Because the high-strength steel wire reinforcement is coated in the continuous thermoplastic plastic, this composite pipe overcomes the respective disadvantages of steel pipes and plastic pipes, while maintaining the respective advantages of steel pipes and plastic pipes.

[0003] However, during the long-term use of the steel wire pipe, the set steel wire mesh structure may slip, thereby reducing the bonding tightness between the steel wire mesh and the plastic raw material, resulting in poor strength and damage of the steel wire mesh skeleton plastic composite pipe. And during the process of segmenting and cutting the prepared steel wire pipe, the steel wire mesh woven on the outer wall of the pipe will be segmented. At this time, the outer side of the segmented steel wire mesh will shrink, which may lead to the situation that the pipe body cannot be completely coated, and thus the compressive resistance of the local position will be greatly reduced.

[0004] Therefore, it is necessary to provide a high-temperature resistant PE steel wire skeleton pipe and its production device to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-temperature resistant PE steel wire skeleton pipe and its production device to solve the problem that during the long-term use of the steel wire pipe in the above background art, the set steel wire mesh structure may slip, thereby reducing the bonding tightness between the steel wire mesh and the plastic raw material, resulting in poor strength and damage of the steel wire mesh skeleton plastic composite pipe. The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A high-temperature resistant PE steel wire skeleton pipe, including an inner core pipe, a first hot melt layer is arranged on the outer wall of the inner core pipe, a steel wire mesh structure layer is arranged on the outer wall of the first hot melt layer, a second hot melt layer is arranged on the outer wall of the steel wire mesh structure layer, and an outer pipe is arranged on the outer wall of the second hot melt layer.

[0007] Preferably, the inner core pipe and the outer pipe are made of polyethylene plastic material.

[0008] Preferably, the first hot melt layer and the second hot melt layer are composed of hot melt adhesive materials.

[0009] Preferably, grooves are provided at both ends of the inner core pipe for installing steel wire rods. The outer side of the steel wire rods penetrates through the first hot melt layer, and at equal intervals on the outer side of one end of the steel wire rods, clamping grooves are provided to clamp the intersection points at the centers of both ends of the steel wire mesh structure layer.

[0010] A production device for a high-temperature resistant PE steel wire skeleton pipe includes a fixed circular ring plate. At the center of the front end face of the fixed circular ring plate, a circular ring bracket is installed. On the outer wall of the circular ring bracket, a first circular ring frame and a second circular ring frame are successively rotatably installed from front to back. And on the front end face of the fixed circular ring plate, a first track and a second track are successively provided from inside to outside.

[0011] Preferably, a first circular ring plate is installed inside the first track. On the front end face of the first circular ring plate, first steel wire unwinding rollers are circumferentially arrayed. On the outer wall of the first circular ring frame, first connecting seats are circumferentially arrayed.

[0012] Preferably, a second circular ring plate is installed on the second track. On the front end face of the second circular ring plate, second steel wire unwinding rollers are circumferentially arrayed. On the outer wall of the second circular ring frame, second connecting seats are circumferentially arrayed.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, the steel wires wound in two directions are wound simultaneously. And during the winding process of the first half circle of the steel wire wound clockwise, the speed is slightly faster than that of the steel wire wound counterclockwise. Then, during the winding process of the second half circle of the steel wire wound clockwise, the winding speed just changes with that of the steel wire wound counterclockwise and is slightly slower than that of the steel wire wound counterclockwise. During the repeated winding process, when the steel wire wound clockwise and the steel wire wound counterclockwise are in single-number intersections, the steel wire wound counterclockwise presses the steel wire wound clockwise from above, and when they are in double-number intersections, the steel wire wound clockwise presses the steel wire wound counterclockwise from above. This makes the steel wire wound clockwise and the steel wire wound counterclockwise intersect and press each other on the outer wall of the pipe body, making the steel wire structure more stable and difficult to slip. In the present invention, steel wire rods are provided at both ends of the outer wall of the pipe body, and clamping grooves are provided at equal intervals on the outer wall of the steel wire rods. And when the steel wire wound clockwise and the steel wire wound counterclockwise are at the intersection positions at both ends of the pipe body, they are just clamped by the clamping grooves, so that when the pipe body is segmented and cut subsequently, the situation of inner shrinkage will not occur, greatly improving the service life of the pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic side sectional view of the present invention; Figure 2 It is a winding schematic diagram of the steel wire mesh structure layer of the present invention; Figure 3 Schematic three-dimensional view of the installation of the steel wire mesh structure layer and the steel wire rod of the present invention; Figure 4 For the present invention Figure 3 front view; Figure 5 For the present invention Figure 4 Enlarged view at A in; Figure 6 Schematic three-dimensional view of the pipe body of the present invention when wrapping the steel wire mesh structure layer; Figure 7 Schematic three-dimensional view of the device for wrapping the steel wire mesh structure layer of the present invention.

[0015] In the figure: 1, inner core pipe; 2, first heat-melt layer; 3, steel wire mesh structure layer; 4, second heat-melt layer; 5, outer pipe; 6, steel wire rod; 7, card slot; 8, fixed circular ring plate; 9, circular ring bracket; 10, first circular ring frame; 11, second circular ring frame; 12, first circular ring plate; 13, first steel wire unwinding roller; 14, first connecting seat; 15, second circular ring plate; 16, second steel wire unwinding roller; 17, second connecting seat. Specific embodiments

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "setting" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. Next, the embodiments of the present invention will be described according to the overall structure of the present invention.

[0018] Please refer to Figures 1-5 , a high-temperature resistant PE steel wire skeleton pipe, which includes an inner core pipe 1. A first hot melt layer 2 is arranged on the outer wall of the inner core pipe 1. A steel wire mesh structure layer 3 is arranged on the outer wall of the first hot melt layer 2. A second hot melt layer 4 is arranged on the outer wall of the steel wire mesh structure layer 3. An outer pipe 5 is arranged on the outer wall of the second hot melt layer 4.

[0019] As Figures 1-5 shown, the inner core pipe 1 and the outer pipe 5 are made of polyethylene plastic material. By using polyethylene plastic material, it has the properties of softening when heated and hardening when cooled.

[0020] As Figures 1-5 shown, the first hot melt layer 2 and the second hot melt layer 4 are made of hot melt adhesive material. By using hot melt adhesive material, it has better bonding strength.

[0021] As Figures 1-5 shown, grooves are opened at both ends of the inner core pipe 1 and steel wire rods 6 are installed. The outer sides of the steel wire rods 6 penetrate through the first hot melt layer 2, and clamping grooves 7 are equidistantly opened at one end of the outer sides of the steel wire rods 6 to clamp the intersection points at the centers of both ends of the steel wire mesh structure layer 3. By providing the steel wire rods 6, and clamping grooves 7 are equidistantly opened on the walls of the steel wire rods 6 and the clockwise winding steel wire and the counterclockwise winding steel wire just engage with the clamping grooves 7 when intersecting at both ends of the pipe body, it is difficult for the pipe body to shrink during subsequent segmented cutting, greatly improving the service life of the pipe body.

[0022] Please refer to Figures 6-7 , a production device for a high-temperature resistant PE steel wire skeleton pipe, which includes a fixed circular ring plate 8. A circular ring bracket 9 is installed at the center of the front end face of the fixed circular ring plate 8. A first circular ring frame 10 and a second circular ring frame 11 are successively installed on the outer wall of the circular ring bracket 9 from front to back, and a first track and a second track are successively opened on the front end face of the fixed circular ring plate 8 from inside to outside.

[0023] As Figures 6-7 shown, a first circular ring plate 12 is installed inside the first track. First steel wire unwinding rollers 13 are circumferentially arrayed on the front end face of the first circular ring plate 12. First connecting seats 14 are circumferentially arrayed on the outer wall of the first circular ring frame 10. By controlling the rotation of the first circular ring plate 12, the steel wire wound by the first steel wire unwinding rollers 13 can be wound clockwise around the outer wall of the pipe body.

[0024] As Figures 6-7 shown, a second circular ring plate 15 is installed inside the second track. Second steel wire unwinding rollers 16 are circumferentially arrayed on the front end face of the second circular ring plate 15. Second connecting seats 17 are circumferentially arrayed on the outer wall of the second circular ring frame 11. By controlling the rotation of the second circular ring plate 15, the steel wire wound by the second steel wire unwinding rollers 16 can be wound counterclockwise around the outer wall of the pipe body.

[0025] Working principle: During preparation, more than two groups of steel wires with opposite winding directions are wound around the outer wall of the inner core tube 1. In this solution, four groups of steel wires with opposite winding directions are used for illustration. The steel wires wound in two directions are wound simultaneously. And the steel wire wound clockwise is slightly faster than the steel wire wound counterclockwise during the first half of the winding process. Then, the winding speed of the steel wire wound clockwise just changes with the winding speed of the steel wire wound counterclockwise during the second half of the winding process and is slightly slower than the steel wire wound counterclockwise. Repeatedly performing this winding process will result in the steel wire wound clockwise being pressed by the steel wire wound counterclockwise from above during odd-numbered intersections, and the steel wire wound clockwise pressing the steel wire wound counterclockwise from above during even-numbered intersections. This makes the steel wires wound clockwise and counterclockwise stagger and press each other on the outer wall of the tube body, making the steel wire structure more stable and difficult to slip. And steel wire rods 6 are provided at both ends of the outer wall of the tube body, and slots 7 are equidistantly arranged on the outer wall of the steel wire rods 6. And when the steel wire wound clockwise and the steel wire wound counterclockwise meet at both ends of the tube body, they just engage with the slots 7. This ensures that the tube body will not shrink during subsequent segmented cutting, greatly improving the service life of the tube body. During the winding process, only by controlling the rotation speeds of the first circular ring plate 12 and the second circular ring plate 15 can the winding speed of the steel wire wound clockwise and the winding speed of the steel wire wound counterclockwise be adjusted. A servo motor can be used to drive a gear to rotate, and the gear drives a toothed ring connected to the track to rotate. And the rotation speeds required for the first half and the second half of the rotation of the track driven by the servo motor are set. This operation is an existing conventional technical means and will not be elaborated here. In this way, the steel wire wound clockwise can be slightly faster than the steel wire wound counterclockwise during the first half of the winding process, and then the winding speed of the steel wire wound clockwise just changes with the winding speed of the steel wire wound counterclockwise during the second half of the winding process and is slightly slower than the steel wire wound counterclockwise, realizing the winding of the steel wire mesh structure layer 3. And by calculation, slots can be opened at different positions on different groups of steel wires, enabling different-direction engagement when the two groups of steel wires meet, further improving the stability of the steel wire mesh structure layer 3.

[0026] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A high temperature resistant PE steel wire skeleton pipe, comprising an inner core pipe (1), characterized in that: The outer wall of the inner core tube (1) is provided with a first hot-melt layer (2), the outer wall of the first hot-melt layer (2) is provided with a wire mesh structure layer (3), the outer wall of the wire mesh structure layer (3) is provided with a second hot-melt layer (4), and the outer wall of the second hot-melt layer (4) is provided with an outer tube (5).

2. A high temperature resistant PE steel wire skeleton pipe according to claim 1, characterized in that: The inner core tube (1) and the outer tube (5) are made of polyethylene plastic material.

3. The high temperature resistant PE steel wire skeleton pipe according to claim 1, characterized in that: The first hot-melt layer (2) and the second hot-melt layer (4) are made of hot-melt adhesive material.

4. The high temperature resistant PE steel wire skeleton pipe according to claim 1, characterized in that: The inner core tube (1) has grooves at both ends for mounting steel wire rods (6), the outer side of the steel wire rod (6) passes through the first hot melt layer (2), and one end of the outer side of the steel wire rod (6) has slots (7) equidistantly disposed for clamping the intersection points of the centers of the two ends of the steel wire mesh structure layer (3).

5. The production device of the high temperature resistant PE steel wire skeleton pipe according to any one of claims 1 to 4, comprising a fixed annular plate (8), characterized in that: A circular ring bracket (9) is installed at the center of the front end face of the fixed circular ring plate (8), and a first circular ring bracket (10) and a second circular ring bracket (11) are rotatably installed on the outer wall of the circular ring bracket (9) from front to back in sequence, and a first track and a second track are opened in sequence from inside to outside on the front end face of the fixed circular ring plate (8).

6. The production device of a high temperature resistant PE steel wire skeleton pipe according to claim 5, characterized in that: A first circular plate (12) is installed inside the first track, a first steel wire unwinding roller (13) is arranged in a circumferential array on the front end surface of the first circular plate (12), and a first connecting seat (14) is arranged in a circumferential array on the outer wall of the first circular frame (10).

7. The production device of a high temperature resistant PE steel wire skeleton pipe according to claim 6, characterized in that: A second annular plate (15) is installed inside the second track, a front end surface of the second annular plate (15) is provided with a second wire unwinding roller (16) in a circumferential array, and an outer wall of the second annular frame (11) is provided with a second connecting seat (17) in a circumferential array.

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