A built-in pipeline self-filling anti-reverse device

Abstract

The application discloses a built-in pipeline self-filling anti-reverse device and belongs to the technical field of civil engineering, which comprises a forming pipeline, a slurry guide pipe and an anti-reverse slurry discharging device. The anti-reverse slurry discharging device comprises a slurry guide pipe connecting device located at the middle position of the anti-reverse slurry discharging device. An anti-reverse stopper is arranged below the slurry guide pipe connecting device. The top of the anti-reverse stopper is a spherical surface. The anti-reverse stopper is connected with a spring fixed in a limiting groove at the bottom of the anti-reverse slurry discharging device. The radius of the spherical surface at the top of the anti-reverse stopper is less than or equal to the radius of the limiting groove and greater than the hole radius of the slurry guide pipe connecting device. The anti-reverse stopper abuts against the slurry guide pipe connecting device. The outer sidewall of the anti-reverse slurry discharging device is connected with the forming pipeline. A slurry discharging hole is arranged in the lower sidewall of the anti-reverse slurry discharging device. The device can be buried in a small-radius narrow and closed space in various scenes such as horizontal or vertical drilling, pipe shed and steel pipe pile, thereby solving the problem that the remaining gap between the forming pipeline and the small-radius narrow and closed space is too small to be filled and compacted.

Description

Technical Field

[0001] This invention belongs to the field of civil engineering technology, and specifically relates to a built-in pipe self-filling anti-reverse device. Background Technology

[0002] With the accelerated pace of infrastructure construction in my country, the monitoring of the surrounding environment and the supporting structure of the project itself has received increasing attention. Numerous innovations in drilling and support techniques have effectively promoted the development of the civil engineering industry. With the promotion of green, energy-saving, and environmentally friendly practices in the civil engineering industry, geological drilling at any angle, horizontal pipe roof support, or steel pipe pile support at any angle have gradually become the mainstream construction methods. For geological drilling, pipe roofs, and steel pipe piles, using micro-steel pipes as support methods, achieving accurate monitoring of the deformation of the buried pipes, detecting the density of the filling, and dredging the pipes has become particularly important.

[0003] Currently, in civil engineering, ultrasonic testing tubes are commonly used to detect the compactness of the concrete pouring of retaining structures; pre-embedded inclinometers are commonly used to monitor the deep horizontal displacement of retaining structures (and to remedy the situation by drilling holes at the original pile locations after damage); borehole inclinometers are commonly used to monitor the deep horizontal displacement of surrounding geological bodies; pipe roofs are commonly used for grouting support in the horizontal direction; horizontal inclinometers are also used to monitor roadbed settlement; and silt is removed after the pre-formed pipes have been buried and blocked by silt. All of these scenarios, with their small radius and narrow, enclosed spaces at any angle (including borehole remedies after damage), place higher demands on the compactness of the filling outside the pre-formed pipes, the accuracy of monitoring, the uniformity of filling, and the ease of silt removal.

[0004] When burying pre-formed pipes in small-radius, narrow, enclosed spaces at arbitrary angles (including drilled repairs after damage), it is often impossible to effectively ensure the pipe's centered position and prevent it from floating. Furthermore, due to the small size of small-radius, narrow, enclosed spaces such as boreholes, pipe sheds, and steel pipe piles, burying pre-formed pipes inside them will greatly increase the difficulty of equipment operation and make it impossible to guarantee the filling effect. It may even cause the problem that the remaining gap between the pre-formed pipe and the small-radius, narrow, enclosed space is too small to fill it completely. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a built-in self-filling anti-reverse device for pipelines.

[0006] This invention achieves this objective through the following technical solution:

[0007] A built-in self-filling anti-reverse device includes a molded pipe, a grout guide pipe, and an anti-reverse grout discharge device. The grout guide pipe is located inside the molded pipe. A grouting interception device is provided inside the grout guide pipe. The grouting interception device includes a cover plate. The cover plate has a through horizontal shaft and is connected to the side wall of the grout guide pipe through the horizontal shaft. A torsion spring is provided on the horizontal shaft. A limiting block is provided on the side wall of the grout guide pipe. The limiting block is used to limit the flipping direction of the cover plate.

[0008] The anti-backflow slurry discharge device is a columnar structure with an open top, including a slurry guide pipe connecting device. The slurry guide pipe connecting device has a hole and is located in the middle of the anti-backflow slurry discharge device and connected to the side wall of the anti-backflow slurry discharge device. The slurry guide pipe connecting device is connected to the slurry guide pipe. An anti-backflow baffle is provided below the slurry guide pipe connecting device. The top of the anti-backflow baffle is spherical. The anti-backflow baffle is connected to a spring fixed to the bottom of the anti-backflow slurry discharge device. The spring is located in a limiting groove. The radius of the spherical top of the anti-backflow baffle is less than or equal to the radius of the limiting groove and greater than the radius of the hole of the slurry guide pipe connecting device. The anti-backflow baffle abuts against the hole of the slurry guide pipe connecting device. The outer side wall of the anti-backflow slurry discharge device is connected to the forming pipe. A slurry discharge hole is provided on the lower side wall of the anti-backflow slurry discharge device.

[0009] Furthermore, the device also includes a pipe centering device, which includes a clamp seat fitted on the formed pipe. Three supports are evenly arranged circumferentially on the clamp seat. The supports are movably connected to a support rod. When the support rod comes into contact with an object and is subjected to external force, it rotates around the support and one end of the support rod abuts against the object it contacts. The support is provided with a limiting plate.

[0010] Furthermore, the device also includes a support pile and a support pile anti-backflow protection device. The formed pipe is located inside the support pile, and the support pile anti-backflow protection device is installed on the top of the support pile. The support pile anti-backflow protection device has a through hole in the middle to accommodate the grout guide pipe.

[0011] Furthermore, the anti-backflow protection device for the support pile is threadedly connected to the support pile.

[0012] Furthermore, the anti-backflow slurry discharge device is connected to the molding pipe by bolts.

[0013] Furthermore, a sealing gasket is provided between the formed pipe and the anti-backflow slurry discharge device.

[0014] Furthermore, the slurry pipe connecting device is provided with an embedded locking structure, and the slurry pipe is also equipped with the embedded locking structure, forming an internal snap-fit ​​between the two.

[0015] Furthermore, the embedded locking structure is equipped with a sealing ring.

[0016] Furthermore, the slurry discharge hole is shaped like a plum blossom.

[0017] Furthermore, the anti-backflow slurry discharge device is integrally formed.

[0018] Compared with the prior art, the beneficial effects of this invention are as follows:

[0019] This invention provides a built-in self-filling anti-backflow device for pipes, enabling the installation of pre-formed pipes in narrow, enclosed spaces with small radii in various scenarios, including horizontal, vertical, and arbitrary angle soil sloping, drilling, pipe roofing, and steel pipe piles. It solves problems such as the inability to fill due to insufficient clearance between the pre-formed pipe and the narrow, enclosed space, as well as issues related to the accuracy of pre-formed pipe deformation monitoring, filling density detection, pipe dredging, and pipe centering. The device employs a grout guide pipe installed inside the pre-formed pipe. The length of the grout guide pipe and the pre-formed pipe can be adjusted to the appropriate depth according to the length of the engineering support piles. A grout interception device traps the grout after grouting within the grout guide pipe to prevent blockage and subsequent monitoring. A pipe centering device effectively prevents the pre-formed pipe from floating and keeps it centered. A support pile anti-backflow protection device, working in conjunction with the support piles, effectively prevents overflow from the top of the support piles in non-vertical states. The grout guide pipe and support pile anti-backflow protection device with the built-in grout interception device can be disassembled and reused after grouting, meeting environmental protection and recycling requirements. Attached Figure Description

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0022] Figure 1 This is a cross-sectional view of the anti-backflow slurry discharge device of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of section AA;

[0024] Figure 3 This is a cross-sectional view of the grouting interception device of the present invention;

[0025] Figure 4 for Figure 3 Schematic diagram of the BB section;

[0026] Figure 5 This is a cross-sectional view of the pipe centering device of the present invention;

[0027] Figure 6 This is a top view of the pipe centering device of the present invention;

[0028] Figure 7 This is a schematic diagram of the filling process within the support pile according to the present invention;

[0029] Figure 8 This is a schematic diagram of the filling process in the soil inclinometer according to the present invention;

[0030] In the diagram: 1-Formed pipe, 2-Grouting pipe, 3-Support pile, 4-Support pile anti-backflow protection device, 5-Grouting pipe connection device, 6-Anti-backflow baffle, 7-Spring, 8-Limiting groove, 9-Cover plate, 10-Limiting block, 11-Pipe centering device, 12-Bracket, 13-Support rod, 14-Limiting plate, 15-Sealing gasket, 16-Sealing ring. Detailed Implementation

[0031] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the invention to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] like Figures 1 to 8As shown, this invention discloses an embodiment of a built-in self-filling anti-reverse device for pipelines, including a molding pipeline 1, a grout guide pipe 2, and an anti-reverse grout discharge device. The grout guide pipe 2 is located inside the molding pipeline 1, and a grouting interception device is provided inside the bottom end of the grout guide pipe 2, including a cover plate 9. The cover plate 9 has a through horizontal shaft and is connected to the side wall of the grout guide pipe 2 through the horizontal shaft. A torsion spring is provided on the horizontal shaft. A limit block 10 is provided on the side wall of the grout guide pipe 2 to limit the flipping direction of the cover plate 9. The limit block 10 is located on one side of the horizontal shaft. The upper or lower part of plate 9 serves as a partition for cover plate 9, or limiting blocks 10 are simultaneously installed above and below cover plate 9 on both sides of the horizontal axis. During grouting, the grouting pressure above is greater than the elastic force of the torsion spring, causing cover plate 9 to rotate 90° from a horizontal state to a vertical state. After grouting stops, the grouting pressure above disappears, and the elastic force of the torsion spring restores cover plate 9 to a horizontal state, trapping residual grout above cover plate 9 in grout guide pipe 2, preventing grout in grout guide pipe 2 from flowing out into the forming pipe 1 and clogging the pipe, affecting subsequent monitoring. Grout guide pipe 2 is connected to anti-backflow grout discharge device through an internal snap-fit. After grouting is completed, the connection is removed by rotation for subsequent recycling.

[0033] The anti-backflow slurry discharge device is a columnar structure with an open top, including a slurry guide pipe connection device 5. The slurry guide pipe connection device 5 has a hole and is located in the middle of the anti-backflow slurry discharge device and connected to the side wall of the anti-backflow slurry discharge device. The slurry guide pipe connection device 5 is connected to the slurry guide pipe 2. The slurry guide pipe connection device 5 has an embedded locking structure, and the slurry guide pipe 2 is also equipped with an embedded locking structure. The two correspond to form an embedded buckle. The embedded locking structure is equipped with a rubber sealing ring 16 to increase the airtightness of the interface. Below the slurry pipe connecting device 5, there is an anti-backflow baffle 6. The top of the anti-backflow baffle 6 is spherical. The anti-backflow baffle 6 is connected to a spring 7 fixed to the bottom of the anti-backflow slurry discharge device. The spring 7 is located in the limiting groove 8. The radius of the spherical top of the anti-backflow baffle 6 is less than or equal to the radius of the limiting groove 8 and greater than the radius of the hole of the slurry pipe connecting device 5. The anti-backflow baffle 6 abuts against the hole of the slurry pipe connecting device 5. The outer side wall of the anti-backflow slurry discharge device is connected to the forming pipe 1 by bolts. A rubber sealing gasket 15 is provided between the forming pipe 1 and the anti-backflow slurry discharge device to increase the sealing performance. The lower side wall of the anti-backflow slurry discharge device is provided with plum blossom-shaped slurry discharge holes.

[0034] The top of the anti-backflow grout discharge device is bolted to the forming pipe 1. The grout guide pipe connection device 5 of the anti-backflow grout discharge device is rotatably fastened to the grout guide pipe 2 with an embedded locking structure. During grouting, the pressure provided by the grouting equipment compresses the spring 7 downward. The compressed space allows the filler to enter smoothly and be pressed into the forming pipe 1 and the drilling (or pipe roof, steel pipe pile, etc.) medium through the plum blossom-shaped grout discharge holes reserved on the side wall, making it dense. After grouting, the upper pressure decreases and the spring 7 extends upward, causing the anti-backflow stop 6 to block the hole of the grout guide pipe connection device 5, so as to prevent the filler in the medium from flowing into the forming pipe 1 and blocking the pipe body. This ensures the smooth passage and discharge of the filler in the grout guide pipe 2 during the filling process. At the same time, after the filling stops, it also inhibits the filler in the surrounding medium from flowing back into the forming pipe 1 under pressure.

[0035] The formed pipe 1 is also equipped with a pipe centering device 11, including a clamp seat. Three supports 12 are evenly arranged around the clamp seat. The supports 12 are movably connected to the support rods 13. When the support rods 13 come into contact with an object and are subjected to external force, they rotate around the support 12 and one end of the support rods 13 abuts against the object they are in contact with. The support 12 is provided with a limiting plate 14 to prevent the support rods 13 from rotating downward. The pipe centering device 11 slides in one direction and is used to lock, center, and extend the support pile 3, the grouting pipe 2 in the borehole or pipe roof. During the installation and lowering of the formed pipe 1, the support rod 13 of the pipe centering device 11 is retracted and rotated upward due to the forward friction thrust. After the formed pipe 1 is placed in the predetermined position, the pipe body will float due to external pressure. At this time, the support rod 13 of the pipe centering device 11 rotates downward under the action of gravity and abuts against the support pile 3 or the side wall of the soil layer. The resulting reverse friction thrust centers the formed pipe 1 and prevents it from floating. Similarly, when the formed pipe is grouted externally, it can also ensure that the formed pipe 1 does not move upward and remains centered even under the action of buoyancy.

[0036] In addition, this device also includes support piles 3 and a support pile anti-backflow protection device 4. The forming pipe 1 is located inside the support piles 3, and the support pile anti-backflow protection device 4 is installed on the top of the support piles 3. The support pile anti-backflow protection device 4 has a through hole in the middle to accommodate the grout guide pipe 2. The support pile anti-backflow protection device 4 is mainly used to prevent the grout from overflowing or flowing into the forming pipe 1 at the end of the support piles 3 when they are not vertical. The support pile anti-backflow protection device 4 is made of stainless steel plate and has a through hole in the middle. The support pile anti-backflow protection device 4 is threaded to the support piles 3 before grouting begins and can be removed after the grouting is completed and solidified, which meets the requirements of environmental protection and recycling.

[0037] This invention discloses a built-in pipe self-filling anti-backflow device, including an anti-backflow grout discharge device, a grout guide pipe connection device 5, a pipe centering device 11, and a support pile anti-backflow protection device 4. This device uses a grout guide pipe 2 installed inside the formed pipe 1. The length of the grout guide pipe 2 and the formed pipe 1 can be adjusted to the corresponding depth according to the length of the engineering support pile. The upper part of the grout guide pipe 2 is connected to the grouting equipment. Under pressure, the grout at the bottom of the pipe flows to the borehole medium or the support pile to self-fill and compact. It is suitable for monitoring the grout compaction and pipe support in small-radius, narrow, and enclosed spaces with arbitrary horizontal and vertical angles, such as soil slope, borehole, pipe shed, and steel pipe pile. The stability of the formed pipe 1 is ensured by installing a pipe centering device 11 in a narrow, elongated space with a small radius. An anti-backflow grouting device is installed at the bottom of the formed pipe 1, giving it inherent compressive strength to prevent backflow of grout from the support piles 3 and drilling media into the formed pipe 1 after grouting. The interior of the formed pipe 1 is sealed under pressure by a rubber sealing ring 16 built into the grout guide pipe connection device 5 and the grout guide pipe embedded locking structure. The anti-backflow protection device 4 for the support piles is threadedly connected to the top of the support piles 3 to ensure grout flow protection. The overflowing drilling medium and support pile 3 flow into the forming pipe 1, blocking it. During grouting at the top of the grout guide pipe 2, under pressure, the cover plate 9 rotates 90° from a horizontal to a vertical position. The top of the grout guide pipe 2 is connected to the grouting equipment to the bottom of the forming pipe 1, allowing the grout to drain out through its plum blossom-shaped drainage holes. Ultimately, the drilling medium and the grout itself of the support pile self-fill and compact. After grouting of the grout guide pipe 2, the pressure at the top decreases, and under the action of the torsion spring, the cover plate 9 returns to its original shape, preventing the grout inside the grout guide pipe 2 from flowing out and blocking the forming pipe 1. The anti-backflow grout discharge device, the support pile anti-backflow protection device 4, and the pipe centering device 11 are all made of stainless steel. The installation method is the same for drilling, pipe roof, steel pipe piles, etc., whether horizontal, vertical, or at any angle. The grout guide pipe 2 and the support pile anti-backflow protection device 4 with built-in grouting interception devices can be disassembled and reused after grouting is completed.

[0038] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0039] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A built-in self-filling anti-reverse device for pipelines, characterized in that, The device includes a forming pipe (1), a grout guide pipe (2), and an anti-backflow grout discharge device. The grout guide pipe (2) is located inside the forming pipe (1). The grout guide pipe (2) is equipped with a grout interception device. The grout interception device includes a cover plate (9). The cover plate (9) is provided with a through horizontal shaft and is connected to the side wall of the grout guide pipe (2) through the horizontal shaft. A torsion spring is provided on the horizontal shaft. A limiting block (10) is provided on the side wall of the grout guide pipe (2). The limiting block (10) is used to limit the flipping direction of the cover plate (9). The anti-backflow slurry discharge device is a columnar structure with an open top, including a slurry guide pipe connecting device (5). The slurry guide pipe connecting device (5) has holes. The slurry guide pipe connecting device (5) is located in the middle of the anti-backflow slurry discharge device and is connected to the side wall of the anti-backflow slurry discharge device. The slurry guide pipe connecting device (5) is connected to the slurry guide pipe (2). An anti-backflow baffle (6) is provided below the slurry guide pipe connecting device (5). The top of the anti-backflow baffle (6) is spherical. The anti-reverse discharge device is connected to a spring (7) fixed at the bottom of the anti-reverse discharge device. The spring (7) is located in the limiting groove (8). The top spherical radius of the anti-reverse stop (6) is less than or equal to the radius of the limiting groove (8) and greater than the radius of the hole of the slurry pipe connecting device (5). The anti-reverse stop (6) abuts against the hole of the slurry pipe connecting device (5). The outer side wall of the anti-reverse discharge device is connected to the forming pipe (1). The lower side wall of the anti-reverse discharge device is provided with a discharge hole. It also includes a pipe centering device (11), which includes a hoop fitted on the formed pipe (1). Three supports (12) are evenly arranged around the hoop. The supports (12) are movably connected to a support rod (13). When the support rod (13) comes into contact with an object and is subjected to external force, it rotates around the support (12) and one end of the support rod (13) abuts against the object it contacts. The support (12) is provided with a limiting plate (14).

2. The built-in pipe self-filling anti-reverse device according to claim 1, characterized in that, It also includes a support pile (3) and a support pile anti-backflow protection device (4). The formed pipe (1) is located inside the support pile (3). The support pile anti-backflow protection device (4) is installed on the top of the support pile (3). The support pile anti-backflow protection device (4) has a through hole in the middle to accommodate the grout guide pipe (2) through which it passes.

3. The built-in pipe self-filling anti-reverse device according to claim 2, characterized in that, The anti-backflow protection device (4) of the support pile is threadedly connected to the support pile (3).

4. The built-in pipe self-filling anti-reverse device according to claim 1, characterized in that, The anti-backflow slurry discharge device is connected to the forming pipe (1) by bolts.

5. The built-in pipe self-filling anti-reverse device according to claim 1, characterized in that, A sealing gasket (15) is provided between the forming pipe (1) and the anti-backflow slurry discharge device.

6. The built-in pipe self-filling anti-reverse device according to claim 1, characterized in that, The grout guide pipe connecting device (5) is provided with an embedded locking structure, and the grout guide pipe (2) is also equipped with the embedded locking structure, and the two form an internal buckle.

7. The built-in pipe self-filling anti-reverse device according to claim 6, characterized in that, The embedded locking structure is equipped with a sealing ring (16).

8. The built-in pipe self-filling anti-reverse device according to claim 1, characterized in that, The slurry discharge hole is shaped like a plum blossom.

9. A built-in pipe self-filling anti-reverse device according to claim 1, characterized in that, The anti-backflow slurry discharge device is integrally formed.

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