Drainage and exhaust type compaction grouting pipe device

Abstract

The utility model provides a drainage and exhaust type compaction grouting pipe device, and belongs to the technical field of compaction grouting. According to the technical scheme, the grouting device comprises an end cover, a grouting main body pipe is arranged on the lower side of the end cover, a grouting pipe extending into the grouting main body pipe penetrates through the middle of the end cover, and a drainage and exhaust pipe is arranged in the grouting main body pipe; a plurality of slim holes allowing water and air to pass through but not allowing slurry to pass through are formed in the pipe wall of the drainage and exhaust pipe, and a plurality of groups of slurry holes allowing the slurry to pass through are formed in the pipe wall of the grouting main body pipe. The rapid grouting device has the advantages that the rapid grouting effect can be achieved, the grouting efficiency is improved, redundant water and air accumulated in the grouting pipe can be rapidly discharged, the purity and quality of grouting materials are guaranteed, and therefore the grouting effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compaction grouting, in particular to a drainage and exhaust type compaction grouting pipe device. Background Art

[0002] Compaction grouting is to inject a relatively high-concentration cement slurry or chemical slurry under a relatively high pressure. At the beginning of grouting, the slurry always fills the larger voids first, and then infiltrates into the soil pores under a relatively high pressure. As the pore water pressure in the soil layer increases and squeezes the soil, shear cracks will appear until splitting occurs, and the slurry will then fill the cracks to form slurry veins, so that a new network skeleton structure is formed in the soil body. During the formation of the slurry veins, since a part of the space in the soil body is occupied, and the pores in the soil layer are penetrated by the slurry, the soil is thus compacted, constituting a new slurry vein composite foundation, improving the strength and anti-seepage performance of the soil, and at the same time changing the physical and mechanical properties of the soil and improving the bearing capacity of the soft soil foundation.

[0003] Existing grouting equipment is usually a closed device composed of multiple components, including a grouting pump, a grouting pipe, a mixing device, and a control system, etc. These devices are usually designed to inject specific grouting materials into the foundation or soil in a high-pressure manner in construction projects or foundation treatment projects to achieve reinforcement, waterproofing or other engineering purposes.

[0004] The disadvantages of the existing technology do include the problem that the setting time of the grouting material is relatively long because there is inevitably water and air in the closed grouting pipe. The presence of water and air will affect the chemical reaction and physical state of the grouting material, thus prolonging its setting time. The presence of water and air may cause the grouting material to be unevenly distributed in the grouting pipe, resulting in a lower concentration of the grouting material in some areas and a slower reaction rate, thereby prolonging the overall setting time. In addition, water and air may also form bubbles or voids, affecting the compactness and strength of the grouting material and having an adverse effect on the grouting effect.

[0005] Therefore, the utility model provides a drainage and exhaust type compaction grouting pipe device. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a drainage and exhaust type compaction grouting pipe device with a simple structure and effective drainage and exhaust.

[0007] The utility model is realized by the following measures:

[0008] A drainage and exhaust type compaction grouting injection pipe device, characterized in that it includes an end cap, and a grouting main pipe is arranged below the end cap. As an embodiment, the end cap is fixedly connected to the grouting main pipe through a threaded structure. A grouting pipe extending into the grouting main pipe is arranged through the middle of the end cap, and a drainage and exhaust pipe is arranged in the grouting main pipe;

[0009] A number of fine holes that allow water and air to pass through but do not allow mud to pass through are arranged on the wall of the drainage and exhaust pipe, and a number of groups of mud holes that allow mud to pass through are arranged on the wall of the grouting main pipe. Since the molecular diameters of water and air are smaller, while the molecular diameter of mud is larger, the aperture of the fine holes is smaller than the aperture of the mud holes, so only water and air are allowed to pass through;

[0010] The grouting main pipe is made of high-strength and corrosion-resistant materials, has sufficient rigidity and toughness, can withstand the pressure and impact during the grouting process, the inner wall of the grouting main pipe is smooth, reducing the resistance of the slurry flow and improving the grouting efficiency. A grouting port is arranged on the grouting pipe, which is convenient for connecting with grouting equipment to realize continuous and stable grouting operations.

[0011] The specific features of the present utility model also include:

[0012] A closing mechanism is arranged in the grouting main pipe. The closing mechanism divides the grouting main pipe into an upper cavity and a lower cavity, so that the lower cavity forms a closed space. Both the grouting pipe and the drainage and exhaust pipe pass through the closing mechanism and extend into the lower cavity.

[0013] The air outlet of the drainage and exhaust pipe is arranged outside the grouting main pipe after passing through the end cap.

[0014] The drainage and exhaust pipe includes pipe one arranged on both sides of the grouting pipe and pipe two that is U-shaped and bent in the grouting main pipe. The fine holes are arranged on the walls of pipe one and pipe two extending into the lower cavity. The drainage and exhaust pipe is made of flexible material, has certain flexibility and tensile resistance, can adapt to different installation environments and space limitations. The drainage and exhaust pipe is used to filter and discharge water and air in the slurry. The contact surface with the slurry is a fine pore structure, which can effectively remove water and air with smaller molecular diameters and retain the slurry with larger molecular diameters, ensuring the purity and stability of the grouting process. When the slurry enters the lower cavity space, the siphon structure will guide water and air to be discharged through the discharge hose, ensuring that the slurry is effectively sealed in the lower cavity.

[0015] The closing mechanism is a piston structure with a cavity inside, and a through hole communicating with the cavity is arranged on the lower side surface of the closing mechanism.

[0016] The material of the sealing mechanism is an elastic material. During the grouting process, the sealing mechanism expands under the pressure of the slurry, sealing the slurry in the lower cavity, preventing the slurry from leaking out, discharging water and air with smaller molecular diameters, and retaining the slurry with larger molecular diameters, making it easy to inject the grout into the pipe. Therefore, the injection time is greatly reduced, which is equivalent to squeezing the cement slurry in a closed space and only releasing air and water to the outside.

[0017] The sealing mechanism includes a fixing plate. A circular pipe made of an elastic material is provided on the lower side of the fixing plate. A circular baffle is provided on the lower side of the circular pipe. A slurry inlet penetrating into the circular pipe is provided on the lower side of the circular baffle. An elastic sealing ring is provided around the circular pipe between the fixing plate and the circular baffle. When the slurry enters the circular pipe through the slurry inlet, the circular pipe expands, and then drives the elastic sealing ring to expand, so that the elastic sealing ring is pressed tightly against the inner wall of the grouting main pipe to prevent the slurry from flowing out.

[0018] A pair of connecting rods are provided on the upper side of the fixing plate. The upper ends of the pair of connecting rods are fixed on the lower side of the end cover. The end cover is connected to the grouting main pipe through a threaded structure, so that the sealing mechanism is limited in the grouting main pipe through the pair of connecting rods.

[0019] The working principle of this device: A drainage and exhaust system is formed by using a drainage and exhaust pipe connected to the lower part of the sealing mechanism. The slurry enters the grouting main pipe under high pressure and is sealed in the lower cavity. At this time, the installed drainage and exhaust pipe discharges water and air with smaller molecular diameters through corresponding fine holes, and retains the slurry with larger molecular diameters.

[0020] The beneficial effects of the present utility model are as follows: A drainage and exhaust port is provided on the side of the grouting pipe of this device, which can quickly discharge the excess water and air accumulated in the grouting main pipe, ensuring the purity and quality of the grouting material, thereby improving the grouting effect. Through the combination of the drainage and exhaust functions, this device can significantly reduce the obstructive factors during the grouting process, enabling the grouting material to reach the predetermined position more quickly and fully solidify. This not only shortens the grouting time, improves work efficiency, but also helps to reduce the construction period delay and cost increase caused by waiting for solidification for a long time. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of a partial cross-section of the grouting main pipe according to an embodiment of the present utility model.

[0022] Figure 2 It is a schematic diagram of the structure of the sealing mechanism 4 in an embodiment of the present utility model.

[0023] Figure 3This is a schematic diagram of the relevant structure of the closing mechanism in Embodiment 2 of the present utility model.

[0024] Among them, the reference numerals are: 1, end cover; 2, grouting main pipe; 3, pipe 1; 4, closing mechanism; 5, grouting pipe; 6, mud hole; 7, pipe 2; 8, through hole; 9, connecting rod; 10, fixing plate; 11, elastic sealing ring; 12, circular baffle. Detailed implementation manners

[0025] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0028] To clearly illustrate the technical features of this solution, the following is an elaboration of this solution through specific implementation manners.

[0029] Embodiment 1

[0030] See Figure 1-2, A drainage and exhaust type compaction grouting injection pipe device, including an end cap 1. Below the end cap 1, there is an injection main pipe 2. As an embodiment, the end cap 1 is fixedly connected to the injection main pipe 2 through a threaded structure. An injection pipe 5 extending into the injection main pipe 2 is arranged through the middle of the end cap 1. A drainage and exhaust pipe is arranged in the injection main pipe 2;

[0031] A number of fine holes that allow water and air to pass through but do not allow mud to pass through are arranged on the wall of the drainage and exhaust pipe. A number of groups of mud holes 6 that allow mud to pass through are arranged on the wall of the injection main pipe 2. Since the molecular diameters of water and air are smaller, while the molecular diameter of mud is larger, and the aperture of the fine holes is smaller than that of the mud holes 6, only water and air are allowed to pass through;

[0032] The injection main pipe 2 is made of high-strength and corrosion-resistant materials, has sufficient rigidity and toughness, can withstand the pressure and impact during the grouting process. The inner wall of the injection main pipe 2 is smooth, reducing the resistance of the slurry flow and improving the grouting efficiency. An injection port is arranged on the injection pipe 5, which is convenient for connecting with the grouting equipment to realize continuous and stable grouting operations.

[0033] A closing mechanism 4 is arranged in the injection main pipe 2. The closing mechanism 4 divides the injection main pipe 2 into an upper cavity and a lower cavity, making the lower cavity form a closed space. Both the injection pipe 5 and the drainage and exhaust pipe pass through the closing mechanism 4 and extend into the lower cavity.

[0034] The air outlet of the drainage and exhaust pipe passes through the end cap 1 and is arranged outside the injection main pipe 2.

[0035] The drainage and exhaust pipe includes pipe one 3 arranged on both sides of the injection pipe 5 and pipe two 7 that is U-shaped and bent in the injection main pipe 2. Fine holes are arranged on the walls of pipe one 3 and pipe two 7 extending into the lower cavity. The drainage and exhaust pipe is made of flexible material, has certain flexibility and tensile resistance, can adapt to different installation environments and space limitations. The drainage and exhaust pipe is used to filter and discharge water and air in the slurry. The contact surface with the slurry is a fine pore structure, which can effectively remove water and air with smaller molecular diameters and retain the slurry with larger molecular diameters, ensuring the purity and stability of the grouting process. When the slurry enters the lower cavity space, the siphon structure will guide water and air to be discharged through the discharge hose, ensuring that the slurry is effectively sealed in the lower cavity.

[0036] The closing mechanism 4 is a piston structure with a cavity inside. A through hole 8 communicating with the cavity is arranged on the lower side surface of the closing mechanism 4.

[0037] The material of the sealing mechanism 4 is an elastic material, which is pasted on the inner wall of the grouting main pipe 2 by glue. During the grouting process, the sealing mechanism 4 expands under the pressure of the slurry, seals the slurry in the lower cavity, prevents the slurry from leaking, discharges water and air with smaller molecular diameters, and retains the slurry with larger molecular diameters, making it easy to inject the grouting material into the pipe. Therefore, the injection time is greatly reduced, which is equivalent to squeezing the cement slurry in a closed space and only releasing air and water to the outside.

[0038] Embodiment 2

[0039] See Figure 1 and Figure 3

[0040] A drainage and exhaust type compaction grouting pipe device includes an end cap 1. A grouting main pipe 2 is arranged below the end cap 1. A grouting pipe 5 extending into the grouting main pipe 2 is arranged through the middle of the end cap 1. A drainage and exhaust pipe is arranged in the grouting main pipe 2.

[0041] A number of fine holes that allow water and air to pass through but do not allow mud to pass through are arranged on the wall of the drainage and exhaust pipe. A number of groups of mud holes 6 that allow mud to pass through are arranged on the wall of the grouting main pipe 2. Since the molecular diameters of water and air are smaller, while the molecular diameter of mud is larger, and the pore diameter of the fine holes is smaller than that of the mud holes 6, only water and air are allowed to pass through.

[0042] The grouting main pipe 2 is made of a high-strength and corrosion-resistant material, has sufficient rigidity and toughness, can withstand the pressure and impact during the grouting process. The inner wall of the grouting main pipe 2 is smooth, reducing the resistance of the slurry flow and improving the grouting efficiency. A grouting port is arranged on the grouting pipe 5, which is convenient for connecting with the grouting equipment to achieve continuous and stable grouting operations.

[0043] A sealing mechanism 4 is arranged in the grouting main pipe 2. The sealing mechanism 4 divides the grouting main pipe 2 into an upper cavity and a lower cavity, making the lower cavity form a closed space. Both the grouting pipe 5 and the drainage and exhaust pipe pass through the sealing mechanism 4 and extend into the lower cavity.

[0044] The air outlet of the drainage and exhaust pipe passes through the end cap 1 and is arranged outside the grouting main pipe 2.

[0045] The drainage and exhaust pipe includes pipe one 3 arranged on both sides of the grouting pipe 5 and pipe two 7 which is U-shaped and bent inside the grouting main pipe 2. Fine holes are provided on the pipe walls of pipe one 3 and pipe two 7 extending into the lower cavity. The drainage and exhaust pipe is made of flexible material, has certain bendability and tensile resistance, and can adapt to different installation environments and space limitations. The drainage and exhaust pipe is used to filter and discharge water and air in the slurry. The contact surface with the slurry is a fine pore structure, which can effectively remove water and air with smaller molecular diameters and retain the slurry with larger molecular diameters, ensuring the purity and stability of the grouting process. When the slurry enters the lower cavity space, the siphon structure will guide the water and air to be discharged through the discharge hose, ensuring that the slurry is effectively sealed in the lower cavity.

[0046] The closing mechanism 4 includes a fixing plate 10. A circular pipe made of elastic material is provided on the lower side of the fixing plate 10. A circular baffle 12 is provided on the lower side of the circular pipe. A slurry inlet penetrating into the circular pipe is provided on the lower side of the circular baffle 12. An elastic sealing ring 11 is provided on the periphery of the circular pipe between the fixing plate 10 and the circular baffle 12. When the slurry enters the circular pipe through the slurry inlet, the circular pipe expands, and then drives the elastic sealing ring 11 to expand, so that the elastic sealing ring 11 is pressed against the inner wall of the grouting main pipe 2 to prevent the slurry from flowing out.

[0047] A pair of connecting rods 9 are provided on the upper side of the fixing plate 10. The upper ends of the pair of connecting rods 9 are fixed on the lower side of the end cover 1. The end cover is connected to the grouting main pipe 2 through a threaded structure, so that the closing mechanism 4 is limited in the grouting main pipe 2 through the pair of connecting rods 9.

[0048] During the grouting process, the closing mechanism 4 expands under the pressure of the slurry, seals the slurry in the lower cavity, prevents the slurry from leaking out, discharges water and air with smaller molecular diameters, and retains the slurry with larger molecular diameters, making it very easy to inject the grouting material into the pipe. Therefore, the injection time is greatly reduced, which is equivalent to squeezing the cement slurry in a closed space and only releasing air and water to the outside.

[0049] The working principle of this device: A drainage and exhaust system is formed by using the drainage and exhaust pipe connected to the lower part of the closing mechanism 4. The slurry enters the grouting main pipe 2 under high pressure and is sealed in the lower cavity. At this time, the installed drainage and exhaust pipe discharges water and air with smaller molecular diameters through the corresponding fine holes and retains the slurry with larger molecular diameters.

[0050] The technical features not described in this utility model can be achieved by or adopted from the prior art and will not be elaborated herein. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of this utility model shall also fall within the protection scope of this utility model.

Claims

1. A drainage and exhaust type compaction grouting pipe device, characterized in that, It includes an end cap (1). A grouting main pipe (2) is arranged on the lower side of the end cap (1). A grouting pipe (5) passing through the middle of the end cap (1) extends into the grouting main pipe (2). A drain and exhaust pipe is arranged in the grouting main pipe (2). A number of fine holes allowing water and air to pass through but not allowing mud to pass through are arranged on the wall of the drain and exhaust pipe. A number of groups of mud holes (6) allowing mud to pass through are arranged on the wall of the grouting main pipe (2).

2. The drainage and exhaust type compaction grouting grouting pipe device according to claim 1, characterized in that, A closing mechanism (4) is arranged in the grouting main pipe (2). The closing mechanism (4) divides the grouting main pipe (2) into an upper cavity and a lower cavity. Both the grouting pipe (5) and the drain and exhaust pipe pass through the closing mechanism (4) and extend into the lower cavity.

3. The drainage and exhaust type compaction grouting injection pipe device according to claim 2, characterized in that, The air outlet of the drain and exhaust pipe is arranged outside the grouting main pipe (2) after passing through the end cap (1).

4. The drainage and exhaust type compaction grouting injection pipe device according to claim 3, characterized in that, The drain and exhaust pipe includes a pipe one (3) arranged on both sides of the grouting pipe (5) and a pipe two (7) U-shaped and bent in the grouting main pipe (2). The fine holes are arranged on the walls of the pipe one (3) and the pipe two (7) extending into the lower cavity.

5. The drainage and exhaust type compaction grouting grouting pipe device according to claim 2, characterized in that, The closing mechanism (4) is a piston structure with a cavity inside. A through hole (8) communicating with the cavity is arranged on the lower side surface of the closing mechanism (4).

6. The drainage and exhaust type compaction grouting injection pipe device according to claim 5, characterized in that, The material of the closing mechanism (4) is an elastic material.

7. The drainage and exhaust type compaction grouting injection pipe device according to claim 2, characterized in that, The closing mechanism (4) includes a fixing plate (10). A circular pipe made of an elastic material is arranged on the lower side surface of the fixing plate (10). A circular baffle (12) is arranged on the lower side of the circular pipe. A mud inlet communicating with the inside of the circular pipe is arranged on the lower side surface of the circular baffle (12). An elastic sealing ring (11) is arranged around the circular pipe between the fixing plate (10) and the circular baffle (12).

8. The drainage and exhaust type compaction grouting injection pipe device according to claim 7, characterized in that, A pair of connecting rods (9) are arranged on the upper side surface of the fixing plate (10). The upper ends of the pair of connecting rods (9) are fixed on the lower side surface of the end cap (1).

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