Surface-enhanced sheath of polyethylene pipe

Abstract

The invention discloses a polyethylene pipe surface enhanced sheath, and belongs to the field of polyethylene pipes, the polyethylene pipe surface enhanced sheath comprises a pipe main body, the outer surface of the pipe main body is wrapped with a layer of sheath main body, the sheath main body is internally provided with a smooth cavity, one side of the smooth cavity is slidably provided with a left closing plate, and the other side of the smooth cavity is slidably provided with a right closing plate; expansion particles are arranged between the right sealing plate and the left sealing plate and arranged at the bottom of the smooth cavity. Through the smooth cavity, the left sealing plate, the right sealing plate and the expansion particles, when the pipe body leaks water, the expansion particles absorb water to extrude the left sealing plate and the right sealing plate in the smooth cavity, so that the left sealing plate and the right sealing plate are close to each other and make contact with each other, and therefore the damaged part on the pipe body is blocked, and when the pipe body is damaged to cause water leakage, the pipe body can be prevented from being damaged. The water leakage position of the pipe body is blocked, continuous water leakage of the pipe body in the excavation process is avoided, waste of water resources is reduced, and cost is saved.

Description

Technical Field

[0001] The present invention relates to the field of polyethylene pipes, and more specifically, to a surface reinforcement sheath for polyethylene pipes. Background Art

[0002] Polyethylene pipes, abbreviated as PE pipes, are a kind of plastic pipes made by using polyethylene resin as the main raw material through an extrusion molding process. They are widely used in fields such as water supply, drainage, gas transmission, and industrial fluid transmission.

[0003] When polyethylene pipes are used in the field of underground water supply and drainage pipes, since rainwater is acidic, after rainwater enters the soil and contacts the polyethylene pipes buried in the soil, combined with the electrolytes contained in the soil, it will corrode the polyethylene pipes. Therefore, in actual use, a layer of reinforcement sheath is added to the surface of the polyethylene pipes to protect the polyethylene pipes in the soil. When regularly replacing the polyethylene pipes in the soil, in order to reduce the situation that the polyethylene pipes are damaged by large excavation tools when being dug out, the method of manual excavation with a shovel is often used. However, when manually excavating the polyethylene pipes buried in the soil, it is inevitable that workers, in order to pursue work efficiency, use excessive force, resulting in the situation that the shovel damages the polyethylene pipes, and the water resources transported in the pipes will continuously flow out during the process of excavating the polyethylene pipes, causing a large amount of waste of water resources. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a surface reinforcement sheath for polyethylene pipes.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A surface reinforcement sheath for polyethylene pipes, including a pipe body. A sheath body is wrapped around the outer surface of the pipe body. A smooth cavity is provided inside the sheath body. A left closing plate is slidably arranged on one side of the smooth cavity, and a right closing plate is slidably arranged on the other side of the smooth cavity. Expansion particles are arranged between the right closing plate and the left closing plate, and the expansion particles are placed at the bottom of the smooth cavity. The inner walls and outer walls of the left closing plate and the right closing plate are in contact with the inner wall of the smooth cavity. Flow guiding grooves are provided on the outer walls of the left closing plate and the right closing plate, and the flow guiding grooves are used to guide the water flow inside the smooth cavity into the expansion particles.

[0007] Furthermore, two groups of clamping holes are symmetrically provided on the inner wall of the smooth cavity. Clamping blocks are slidably and sealingly arranged in the clamping holes. A limiting rod is slidably sleeved inside the clamping block, and the top end of the limiting rod extends outside the clamping block and is fixedly connected to a slider. The two clamping blocks respectively limit the left closing plate and the right closing plate through the two limiting rods.

[0008] Furthermore, sliding grooves are formed inside both the left closing plate and the right closing plate, the sliding blocks are slidably arranged in the sliding grooves, a thrust spring is sleeved on the outer surface of the limiting rod, the top end of the thrust spring is fixedly connected with the sliding block, the bottom end of the thrust spring is fixedly connected with the clamping block, the limiting rod is arranged in the sliding groove, the clamping block can be contracted into the sliding groove through the limiting rod and separated from the clamping hole, an extrusion groove is formed in the inner wall of the smooth cavity, the extrusion groove is communicated with the clamping hole, and one side of the extrusion groove extends to the expansion particles.

[0009] Furthermore, a plurality of groups of tension springs are symmetrically arranged on the inner wall of the smooth cavity, the bottom ends of the tension springs are fixedly connected with the left closing plate and the right closing plate respectively, a connecting rod is fixedly installed on the inner wall of the smooth cavity, and the connecting rod is fixedly connected with the top ends of the plurality of groups of tension springs.

[0010] Furthermore, the tops of both the left closing plate and the right closing plate are in an L-shaped protruding shape, a sealing plug board is fixedly connected to the L-shaped protruding end of the left closing plate, a slot is formed inside the L-shaped protruding end of the right closing plate, and the sealing plug board can be inserted into the slot.

[0011] Furthermore, the expansion particles are high molecular water-absorbing expansion materials, and the left closing plate and the right closing plate form a semi-circular ring after combination.

[0012] Furthermore, the connecting rod is located on the upper wall at the top end of the smooth cavity, and the plurality of groups of tension springs are connected to the positions above the L-shaped protrusions of the left closing plate and the right closing plate.

[0013] Furthermore, the two clamping blocks are arranged obliquely, the two clamping holes are arranged obliquely, and the inclined direction of the clamping block is the same as the sliding direction of the left closing plate and the right closing plate.

[0014] Furthermore, the contracted length of the plurality of groups of tension springs is the same as the total length of the L-shaped protrusions at the tops of the left closing plate and the right closing plate.

[0015] Furthermore, the sealing plug board is made of soft rubber material, and the thickness of the sealing plug board gradually decreases from bottom to top, and the size of the slot gradually decreases from top to bottom.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] (1) Through the smooth cavity, left closing plate, right closing plate and expansion particles provided in the present invention, when the pipe body leaks, the expansion particles absorb water and squeeze the left closing plate and the right closing plate in the smooth cavity, causing the two to approach and contact each other, thereby achieving the plugging of the damaged part on the pipe body. When the pipe body is damaged and leaks, the leaking position of the pipe body can be plugged, preventing the pipe body from continuing to leak during the excavation process, reducing the waste of water resources and saving costs.

[0018] (2) Through the clamping blocks, clamping holes, thrust springs, extrusion grooves and sliding grooves provided in the present invention, when the pipe body is shoveled out of a notch by a spade and internal water resources leak, at this time, the notch of the pipe body will communicate with the smooth cavity. A part of the leaked water resources will enter the smooth cavity through the notch on the pipe body, and then the expansion particles start to absorb water and expand. After the clamping blocks leave the clamping holes, the left closing plate and the right closing plate can slide quickly in the smooth cavity, thereby achieving the purpose of storing energy, and facilitating the subsequent one-time ejection of pressurized water to remind the construction personnel that there is a leak here.

[0019] (3) Through the tension springs, clamping blocks, clamping holes and extrusion grooves provided in the present invention, the left closing plate and the right closing plate can be quickly brought close to and contact each other. During the movement of the left closing plate and the right closing plate, the left closing plate and the right closing plate will squeeze the water in the upper space of the smooth cavity out of the notch of the pipe body, causing the outside of the pipe body to spray out in a water flow shape, reminding the construction personnel that there is a dug-up pipe body here and adjusting the excavation direction to avoid causing more waste of water resources. Brief Description of the Drawings

[0020] Figure 1 is the front structural schematic diagram of the present invention;

[0021] Figure 2 is the side sectional view of the internal structure of the sheath body of the present invention;

[0022] Figure 3 is the exploded view of the internal structure of the sheath body of the present invention;

[0023] Figure 4 is of the present invention Figure 2 is the enlarged view of the structure at A in;

[0024] Figure 5 is the sectional view of the side structure of the sheath body of the present invention;

[0025] Figure 6 is of the present invention Figure 5 is the enlarged view of the structure at B in;

[0026] Figure 7 is of the present invention Figure 3 is the enlarged view of the structure at C in;

[0027] Figure 8 This is a partial structural schematic diagram of the left closing plate and the right closing plate of the present invention.

[0028] Explanation of the reference numerals in the figure:

[0029] 1. Pipe body; 2. Sheath body; 3. Smooth cavity; 4. Left closing plate; 5. Expansive particles; 6. Right closing plate; 7. Flow guiding groove; 8. Clamping block; 9. Clamping hole; 10. Limiting rod; 11. Slide block; 12. Slide groove; 13. Extrusion groove; 14. Thrust spring; 15. Connecting rod; 16. Tensile spring; 17. Sealing plug board; 18. Insertion slot. Specific embodiments

[0030] 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.

[0031] Please refer to Figures 1 to 8 , a surface enhancement sheath for a polyethylene pipe, comprising a pipe body 1, a sheath body 2 is wrapped on the outer surface of the pipe body 1, a smooth cavity 3 is opened inside the sheath body 2, a left closing plate 4 is slidably arranged on one side of the smooth cavity 3, a right closing plate 6 is slidably arranged on the other side of the smooth cavity 3, an expansive particle 5 is arranged between the right closing plate 6 and the left closing plate 4, the expansive particle 5 is placed at the bottom of the smooth cavity 3, the inner and outer walls of the left closing plate 4 and the right closing plate 6 are in contact with the inner wall of the smooth cavity 3, and flow guiding grooves 7 are opened on the outer walls of the left closing plate 4 and the right closing plate 6, and the flow guiding grooves 7 are used to guide the water flow inside the smooth cavity 3 into the expansive particle 5.

[0032] The expansive particle 5 is a high molecular water-absorbing and expanding material, and the left closing plate 4 and the right closing plate 6 are combined into a semi-circular ring.

[0033] When excavating the polyethylene pipe in the soil, if the excavator uses too much force with the shovel and damages the sheath main body 2 and the pipe main body 1, the water flow inside the pipe will overflow through the damaged part of the pipe. Part of the water flow overflowing from the inside of the pipe will enter the smooth cavity 3 and flow to the bottom of the smooth cavity 3 through the guiding action of the guiding groove 7 due to its own gravity and contact the expansion particles 5. At this time, the expansion particles 5 absorb water and expand in the smooth cavity 3 and squeeze the left closing plate 4 and the right closing plate 6 to both sides until the left closing plate 4 and the right closing plate 6 contact each other at the top position of the smooth cavity 3. At this time, the left closing plate 4 and the right closing plate 6 will block the damaged position of the pipe main body 1, so that the pipe main body 1 stops leaking. It can block the leaking position of the pipe main body 1 when the pipe main body 1 is damaged and leaks, prevent the pipe main body 1 from continuing to leak during the excavation process, reduce the waste of water resources and save costs;

[0034] It should be particularly noted here that: since the polyethylene pipe is used for water supply buried in the soil and the pipeline is relatively thick, when the shovel is shoveled on the pipe main body 1, the whole pipe main body 1 will not be directly cut off at one time;

[0035] And because the polyethylene pipe is buried in the soil, when digging deeply, the upper part of the pipe main body 1 will be shoveled first. Since the smooth cavity 3 is provided with a left closing plate 4 and a right closing plate 6 on both sides of the pipe main body 1, it can protect the pipe main body 1 when the shovel is shoveled on both sides of the sheath main body 2.

[0036] Such as Figure 3 、 Figures 5 to 7 As shown, two groups of clamping holes 9 are symmetrically arranged on the inner wall of the smooth cavity 3. A clamping block 8 is slidably and sealingly arranged in the clamping hole 9. A limiting rod 10 is slidably sleeved inside the clamping block 8. The top end of the limiting rod 10 extends to the outside of the clamping block 8 and is fixedly connected to a sliding block 11. The two groups of clamping blocks 8 limit the left closing plate 4 and the right closing plate 6 through the two groups of limiting rods 10 respectively.

[0037] The two groups of clamping blocks 8 are arranged obliquely, the two groups of clamping holes 9 are arranged obliquely, and the inclined direction of the clamping block 8 is the same as the sliding direction of the left closing plate 4 and the right closing plate 6.

[0038] When a notch is shoveled out of the pipe body 1 by a shovel, causing internal water resources to leak, the notch of the pipe body 1 will communicate with the smooth cavity 3 at this time. Part of the leaked water resources will enter the smooth cavity 3 through the notch on the pipe body 1. Subsequently, the expansion particles 5 begin to absorb water and expand. Since the clamping block 8 is stuck in the clamping hole 9 at this time, the expanded expansion particles 5 cannot push the left closing plate 4 and the right closing plate 6 on both sides. During this process, part of the leaked water will gradually fill the space at the upper end of the smooth cavity 3. Since the pressure generated by the expansion of the high-molecular water-absorbing and expanding material on the clamping block 8 needs to be greater than the elastic force of the thrust spring 14, after the clamping block 8 leaves the clamping hole 9 subsequently, the left closing plate 4 and the right closing plate 6 can slide rapidly in the smooth cavity 3, so as to achieve the purpose of storing energy, which is convenient for spraying pressurized water at one time subsequently to remind the construction personnel that there is water leakage here.

[0039] As Figures 3 to 8 shown, sliding grooves 12 are respectively formed inside the left closing plate 4 and the right closing plate 6. The sliding block 11 is slidably arranged in the sliding groove 12. A thrust spring 14 is sleeved on the outer surface of the limiting rod 10. The top end of the thrust spring 14 is fixedly connected to the sliding block 11, and the bottom end of the thrust spring 14 is fixedly connected to the clamping block 8. The limiting rod 10 is arranged in the sliding groove 12. The clamping block 8 can be retracted into the sliding groove 12 through the limiting rod 10 and separated from the clamping hole 9. An extrusion groove 13 is formed on the inner wall of the smooth cavity 3. The extrusion groove 13 communicates with the clamping hole 9, and one side of the extrusion groove 13 extends to the expansion particles 5.

[0040] A plurality of groups of tension springs 16 are symmetrically arranged on the inner wall of the smooth cavity 3. The bottom ends of the tension springs 16 are respectively fixedly connected to the left closing plate 4 and the right closing plate 6. A connecting rod 15 is fixedly installed on the inner wall of the smooth cavity 3, and the connecting rod 15 is fixedly connected to the top ends of the plurality of groups of tension springs 16.

[0041] When the water resources leaked from the pipe body 1 fill the smooth cavity 3, during the process of the expansion particles 5 continuing to absorb the water in the smooth cavity 3, part of the expanded high-molecular water-absorbing and expanding material will enter the extrusion groove 13 and extrude the clamping block 8 in the clamping hole 9. At this time, the clamping block 8 will be as Figure 6It moves obliquely upward as shown in the figure. At the same time, the limiting rod 10 gradually enters the inside of the clamping block 8, and the thrust spring 14 contracts. Until the clamping block 8 is completely retracted into the sliding groove 12, under the action of the expanded high-molecular water-absorbing and swelling material, the left closing plate 4 and the right closing plate 6 will slide upward in an arc along the smooth cavity 3. At this time, in cooperation with the tension spring 16 in the stretched state, the left closing plate 4 and the right closing plate 6 can be quickly brought close to and contact each other. During the movement of the left closing plate 4 and the right closing plate 6, the left closing plate 4 and the right closing plate 6 will squeeze out the water in the upper space of the smooth cavity 3 from the notch of the pipe body 1, causing the outside of the pipe body 1 to spray out in a water flow shape, reminding the construction personnel that there is a dug-through pipe body 1 here and adjusting the excavation direction to avoid more water resource waste;

[0042] When the expanded high-molecular water-absorbing and swelling material absorbs water and swells, it will gradually increase the pressure between the left closing plate 4 and the right closing plate 6. Due to the action of the clamping block 8 and the clamping hole 9, at this time, the left closing plate 4 and the right closing plate 6 are in a locked state. In order to reduce the situation that the pressure generated on the left closing plate 4 and the right closing plate 6 when the high-molecular water-absorbing and swelling material swells is too large, resulting in the breaking of the clamping block 8, when the expanded high-molecular water-absorbing and swelling material absorbs water and swells and squeezes the left closing plate 4 and the right closing plate 6, the left closing plate 4 and the right closing plate 6 will slide upward in an arc along the smooth cavity 3. Due to the setting of the sliding groove 12, the slider 11, the limiting rod 10, the thrust spring 14 and the clamping block 8 will make relative sliding movements relative to the left closing plate 4 and the right closing plate 6. Since a part of the high-molecular water-absorbing and swelling material enters the extrusion groove 13, the pressure generated by the remaining high-molecular water-absorbing and swelling material on the left closing plate 4 and the right closing plate 6 during swelling will decrease, so as to ensure the safety of the clamping block 8 and the limiting rod 10 during use;

[0043] It should be particularly noted here that: the size of the diversion groove 7 is less than half of the inner wall size of the left closing plate 4 and the right closing plate 6, so that the diversion groove 7 can not only ensure that the water can normally contact the swelling particles 5 due to its own gravity, but also enable the left closing plate 4 and the right closing plate 6 to slide along the smooth cavity 3 under the action of the diversion groove 7 and quickly push out the water in the smooth cavity 3.

[0044] As Figures 3 to 8 shown, the tops of the left closing plate 4 and the right closing plate 6 are both L-shaped protrusions. One end of the left closing plate 4 with an L-shaped protrusion is fixedly connected with a plugging plate 17, and a slot 18 is opened inside one end of the right closing plate 6 with an L-shaped protrusion. The plugging plate 17 can be inserted into the slot 18.

[0045] The contracted length of multiple groups of tension springs 16 is the same as the total length of the L-shaped protrusions at the tops of the left closing plate 4 and the right closing plate 6.

[0046] The plugging plate 17 is made of soft rubber, and the thickness of the plugging plate 17 gradually decreases from bottom to top, while the size of the slot 18 gradually decreases from top to bottom.

[0047] The connecting rod 15 is located on the upper wall at the top of the smooth cavity 3, and multiple tension springs 16 are connected to the upper positions where the left closing plate 4 and the right closing plate 6 protrude in an L shape.

[0048] When the water-absorbing superabsorbent polymer material starts to expand, the left closing plate 4 and the right closing plate 6 slide along the smooth cavity 3 and approach each other, and the plugging plate 17 is inserted into the slot 18. The plugging plate 17 is made of soft rubber. Since the thickness of the plugging plate 17 gradually decreases from bottom to top and the size of the slot 18 gradually decreases from top to bottom, under the action of the tension springs 16, the left closing plate 4 and the right closing plate 6 can better block the water leakage point of the pipe body 1, improving the sealing effect of the left closing plate 4 and the right closing plate 6 on the water leakage point of the pipe body 1.

[0049] Usage method: When excavating the polyethylene pipe in the soil, if the excavator uses too much force with the shovel and causes damage to the sheath body 2 and the pipe body 1, at this time, the water flow inside the pipe will overflow through the damaged part of the pipe. Part of the water flow overflowing from the inside of the pipe will enter the smooth cavity 3 and, due to its own gravity, flow to the bottom end of the smooth cavity 3 through the guiding action of the guiding groove 7 and contact the expansion particles 5. At this time, the expansion particles 5 absorb water and expand in the smooth cavity 3 and squeeze the left closing plate 4 and the right closing plate 6 to both sides until the left closing plate 4 and the right closing plate 6 contact each other at the top position of the smooth cavity 3. At this time, the left closing plate 4 and the right closing plate 6 will block the damaged position of the pipe body 1, thereby stopping the water leakage of the pipe body 1. It can plug the water leakage position of the pipe body 1 when the pipe body 1 is damaged and causes water leakage, avoid continuous water leakage of the pipe body 1 during the excavation process, reduce the waste of water resources, and save costs.

[0050] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A surface-enhanced sheath for a polyethylene pipe, comprising a pipe body (1), the outer surface of the pipe body (1) being wrapped with a sheath body (2), characterized in that: A smooth cavity (3) is provided inside the sheath body (2); a left closing plate (4) is slidably provided on one side of the smooth cavity (3); a right closing plate (6) is slidably provided on the other side of the smooth cavity (3); and expansion particles (5) are provided between the right closing plate (6) and the left closing plate (4); The expansion particles (5) are placed at the bottom of the smooth cavity (3); the inner walls and outer walls of the left closing plate (4) and the right closing plate (6) are in contact with the inner wall of the smooth cavity (3); the outer walls of the left closing plate (4) and the right closing plate (6) are provided with guide grooves (7); the guide grooves (7) are used to guide the water flow inside the smooth cavity (3) into the expansion particles (5).

2. The surface enhanced sheath of a polyethylene pipe according to claim 1, characterized in that: The inner wall of the smooth cavity (3) is symmetrically provided with two groups of clamping holes (9), the clamping holes (9) are provided with a clamping block (8) for sliding sealing, the internal sliding sleeve of the clamping block (8) is provided with a limiting rod (10), the top end of the limiting rod (10) extends to the outside of the clamping block (8) to be fixedly connected to a sliding block (11), and the two groups of the clamping blocks (8) respectively limit the left closing plate (4) and the right closing plate (6) through the two groups of the limiting rods (10).

3. The surface enhanced sheath of a polyethylene pipe according to claim 2, characterized in that: The left closing plate (4) and the right closing plate (6) are both provided with a slide groove (12) inside, the slider (11) is slidably arranged in the slide groove (12), the outer surface of the limiting rod (10) is sleeved with a thrust spring (14), the top end of the thrust spring (14) is fixedly connected to the slider (11), the bottom end of the thrust spring (14) is fixedly connected to the clamping block (8), the limiting rod (10) is arranged in the slide groove (12), the clamping block (8) can be retracted into the slide groove (12) and separated from the clamping hole (9) by the limiting rod (10), the inner wall of the smooth cavity (3) is provided with an extrusion groove (13), the extrusion groove (13) is connected to the clamping hole (9), and one side of the extrusion groove (13) extends to the expansion particle (5).

4. The surface enhanced sheath of a polyethylene pipe according to claim 3, characterized in that: The inner wall of the smooth cavity (3) is symmetrically provided with a plurality of tension springs (16), the bottom ends of the tension springs (16) are respectively fixedly connected to the left closing plate (4) and the right closing plate (6), and the inner wall of the smooth cavity (3) is fixedly installed with a connecting rod (15), and the connecting rod (15) is fixedly connected to the top ends of the plurality of tension springs (16).

5. The surface enhanced sheath of a polyethylene pipe according to claim 4, characterized in that: The top ends of the left closing plate (4) and the right closing plate (6) are both L-shaped protrusions. One end of the left closing plate (4) in the L-shaped protrusion is fixedly connected to a plugging plate (17). One end of the right closing plate (6) in the L-shaped protrusion is provided with a slot (18) inside. The plugging plate (17) can be inserted into the slot (18).

6. The surface enhanced sheath of a polyethylene pipe according to claim 5, characterized in that: The expansion particles (5) are macromolecular water-absorbing and swelling materials, and the left closing plate (4) and the right closing plate (6) are combined to form a semicircular ring.

7. The surface enhanced sheath of a polyethylene pipe according to claim 6, characterized in that: The connecting rod (15) is located on the upper wall of the top of the smooth cavity (3), and a plurality of groups of tension springs (16) are connected to the left closing plate (4) and the right closing plate (6) at the upper position of the L-shaped protrusion.

8. The surface enhanced sheath of a polyethylene pipe according to claim 7, characterized in that: The two groups of clamping blocks (8) are arranged obliquely, the two groups of clamping holes (9) are arranged obliquely, and the oblique direction of the clamping blocks (8) is the same as the sliding direction of the left closing plate (4) and the right closing plate (6).

9. The surface enhanced sheath of a polyethylene pipe according to claim 8, characterized in that: The length of the multiple groups of tension springs (16) after contraction is the same as the total length of the L-shaped protrusions on the top of the left closing plate (4) and the right closing plate (6).

10. The surface enhanced sheath of a polyethylene pipe according to claim 9, characterized in that: The blocking plug plate (17) is made of soft rubber, and the thickness of the blocking plug plate (17) gradually decreases from bottom to top, and the size of the slot (18) gradually decreases from top to bottom.

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