Gas lift reverse circulation air pipe fixing device

Abstract

The utility model belongs to the technical field of cast-in-place pile hole construction, and discloses an air lift reverse circulation air pipe fixing device which comprises a fixing assembly and a limiting piece, the fixing assembly comprises a supporting piece and a limiting plate, the limiting plate is provided with a limiting hole, the supporting piece is connected to the limiting plate, and the limiting piece is connected to the outer wall of an air pipe. The limiting plate abuts against the top end of the guide pipe, the supporting piece stretches into the guide pipe, the limiting piece abuts against the side, away from the supporting piece, of the limiting plate, and the air pipe stretches into the guide pipe through the limiting hole. According to the air duct fixing device, the supporting piece of the fixing assembly stretches into the guide pipe, the limiting plate abuts against the top end of the guide pipe, then the air duct connected with the limiting piece stretches into the guide pipe through the limiting hole till the limiting piece abuts against the side, away from the supporting piece, of the limiting plate, and the air duct can be fixed to the guide pipe, so that operation is easy; the inner wall of the guide pipe can limit the moving range and prevent the limiting plate from moving excessively, so that the fixing stability of the air pipe is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of grouting pile hole construction technology, and in particular to a gas lift reverse circulation duct fixing device. Background Technology

[0002] During the construction of cast-in-place piles, after the reinforcement cage is lowered and the tremie pipe is installed, but before concrete pouring, the thickness of the sediment at the bottom of the pile hole must be checked as required. If the sediment thickness exceeds the design requirements, secondary cleaning of the hole is necessary. Secondary cleaning usually adopts an air-lift reverse circulation method. Compressed air enters the tremie pipe through an air duct and mixes with the mud in the tremie pipe to form an air-slurry mixture with a density lower than that of the mud in the hole. Based on the principle of communicating vessels, under the action of pressure difference, the air-slurry mixture rises in the tremie pipe, while the mud in the hole continuously flows from the bottom of the hole into the tremie pipe, forming a reverse circulation that carries the sediment from the bottom of the hole out of the hole.

[0003] During construction, the duct is inserted into the conduit and needs to be secured to prevent it from falling off during subsequent construction. The traditional duct fixing device consists of two steel profiles, which are set at the top of the conduit, and the duct flange rests on the two steel profiles.

[0004] However, during installation, the two steel profiles must first be accurately placed at the top of the duct, ensuring their position and level meet requirements. Then, the duct flange is aligned and placed on the steel profiles. Each step requires precise operation by the construction personnel, making the installation process cumbersome and time-consuming. Furthermore, the complex environment during construction, coupled with vibrations and airflow impacts generated during the airlift reverse circulation process, can cause the steel profiles to shift, leading to duct detachment and increasing safety risks. Utility Model Content

[0005] The purpose of this invention is to provide an airlift reverse circulation air duct fixing device to reduce the difficulty of fixing the air duct, improve the stability of the air duct fixing, and reduce safety risks.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An air-lift reverse circulation duct fixing device, used to assist in fixing the duct to the guide pipe inside the grouting pile hole, includes:

[0008] A fixing component includes a support member and a limiting plate. The limiting plate is provided with a limiting hole. The support member is connected to the limiting plate. When the fixing component is in a load-bearing state, the limiting plate abuts against the top end of the conduit, and the support member extends into the conduit.

[0009] A limiting member is connected to the outer wall of the duct. When the fixing component is in the bearing state, the limiting member abuts against the side of the limiting plate away from the support member, and the duct extends into the guide tube through the limiting hole.

[0010] Preferably, the limiting plate includes a support portion and an operating handle connected to each other, the limiting hole is disposed on the support portion, the support member is connected to the support portion, and when the fixing component is in the bearing state, the support portion is mounted on the top end of the conduit, and the operating handle is located on the outside of the conduit.

[0011] Preferably, the end of the bearing part away from the operating handle is provided with a notch groove communicating with the limiting hole, and the air duct can enter the limiting hole through the notch groove.

[0012] Preferably, the distance between the two groove walls of the notch gradually increases along the direction away from the limiting hole.

[0013] Preferably, the support member is annular, with a notch at one end facing the notch groove, and the support member can circumferentially surround the air duct when the air duct is inserted into the conduit.

[0014] Preferably, the support portion is elongated, the operating handle is located at one end of the support portion along its length, and when the fixing component is in the support state, the end of the support portion away from the operating handle is located on the outside of the conduit.

[0015] Preferably, the operating handle is provided with a gripping element.

[0016] Preferably, the limiting member is annular and can be fitted onto the outside of the air duct.

[0017] Preferably, the limiting member is provided with an internal thread, and the air duct is provided with an external thread, and the limiting member and the air duct are screwed together by the internal thread and the external thread.

[0018] Preferably, the limiting hole is a strip-shaped hole, and the air duct can move along the length direction of the limiting hole.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides an air-lift reverse circulation duct fixing device. By extending the support member of the fixing component into the duct, the limiting plate abuts against the top of the duct, and then the duct connected to the limiting member is extended into the duct through the limiting hole until the limiting member abuts against the side of the limiting plate away from the support member, the duct can be fixed to the duct. The operation is simple, eliminating the need for precise alignment of multiple parts, saving time and labor costs. Furthermore, when the limiting plate moves under external force, the support member connected to the limiting plate will move accordingly. However, since the support member is inside the duct, the inner wall of the duct will obstruct its movement, limiting the range of movement of the support member within the duct, and thus limiting the displacement of the limiting plate. This ensures that the limiting plate can only move within a very small range allowed by the inner wall of the duct, preventing significant positional changes and enhancing the stability of the duct fixing, thereby reducing safety risks. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the air-lift reverse circulation duct fixing device for fixing the auxiliary duct to the guide tube according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the air-lift reverse circulation duct fixing device described in this embodiment of the utility model.

[0023] In the picture:

[0024] 1. Fixing component; 11. Support component; 110. Notch; 12. Limiting plate; 120. Limiting hole; 121. Bearing part; 1210. Notch groove; 122. Operating handle; 1221. Grip;

[0025] 2. Limiting components;

[0026] 100. Air ducts;

[0027] 200. Catheter. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include the feature and the second feature being in direct contact, or it can include the feature and the second feature not being in direct contact but being in contact through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the feature being directly above or diagonally above the second feature, or simply indicates that the feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the feature being directly below or diagonally below the second feature, or simply indicates that the feature is at a lower horizontal level than the second feature.

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1-2 As shown, this utility model provides an air-lift reverse circulation duct fixing device for assisting the duct 100 in fixing to the guide pipe 200 inside the grouting pile hole. It includes a fixing component 1 and a limiting component 2. The fixing component 1 includes a support component 11 and a limiting plate 12. The limiting plate 12 is provided with a limiting hole 120. The support component 11 is connected to the limiting plate 12. When the fixing component 1 is in the load-bearing state, the limiting plate 12 abuts against the top of the guide pipe 200, and the support component 11 extends into the guide pipe 200. The limiting component 2 is connected to the outer wall of the duct 100. When the fixing component 1 is in the load-bearing state, the limiting component 2 abuts against the side of the limiting plate 12 away from the support component 11, and the duct 100 extends into the guide pipe 200 through the limiting hole 120.

[0033] This invention fixes the duct 100 to the conduit 200 by inserting the support member 11 of the fixing component 1 into the conduit 200, making the limiting plate 12 abut against the top of the conduit 200, and then inserting the air duct 100 connected to the limiting member 2 into the conduit 200 through the limiting hole 120 until the limiting member 2 abuts against the side of the limiting plate 12 away from the support member 11. The operation is simple, does not require precise alignment of multiple parts, and saves time and labor costs. Furthermore, when the limiting plate 12 moves under the action of external force, the support member 11 connected to the limiting plate 12 will move accordingly. However, since the support member 11 is inside the conduit 200, the inner wall of the conduit 200 will obstruct its movement, limiting the range of movement of the support member 11 within the conduit 200, thereby limiting the displacement of the limiting plate 12. This ensures that the limiting plate 12 can only move within a very small range allowed by the inner wall of the conduit 200, ensuring that the limiting plate 12 will not undergo significant positional changes, thereby enhancing the stability of the fixed duct 100 and reducing safety risks.

[0034] Specifically, such as Figure 1 As shown, the limiting plate 12 includes a support portion 121 and an operating handle 122 connected to each other. A limiting hole 120 is provided in the support portion 121, and a support member 11 is connected to the support portion 121. When the fixing component 1 is in the load-bearing state, the support portion 121 is mounted on the top of the conduit 200, and the operating handle 122 is located on the outside of the conduit 200. When the fixing component 1 is installed on the conduit 200, the construction personnel can lift the entire fixing component 1 and move it onto the conduit 200 by holding the operating handle 122. Furthermore, since the operating handle 122 is located on the outside of the conduit 200 when the fixing component 1 is in the load-bearing state, it is easier for the construction personnel to hold the operating handle 122 and remove the fixing component 1 from the conduit 200 when the construction is completed or when the device needs to be adjusted, thereby improving the efficiency of the installation and disassembly of the fixing component 1.

[0035] More specifically, such as Figure 2 As shown, the end of the bearing part 121 away from the operating handle 122 is provided with a notch 1210 communicating with the limiting hole 120, through which the air duct 100 can enter the limiting hole 120. Installing the air duct 100 through the notch 1210 reduces the time required for construction personnel to adjust the position and angle of the air duct 100. Construction personnel can quickly align the air duct 100 with the notch 1210 and slide it into the limiting hole 120, reducing the difficulty of installation.

[0036] More specifically, the distance between the two groove walls of the notch 1210 gradually increases in the direction away from the limiting hole 120. When the installer places the duct 100 into the limiting hole 120, the gradually increasing opening of the notch 1210 guides the duct 100's entry. The installer does not need to spend a lot of time and effort on precise alignment; simply placing the duct 100 near the notch 1210 allows it to slide smoothly into the limiting hole 120 under the guidance of the gradually narrowing groove walls, significantly improving installation efficiency. Furthermore, the gradually increasing spacing design makes the entrance to the notch 1210 more open, preventing the duct 100 from colliding with or getting stuck on the groove wall when entering the notch 1210, reducing time wastage and component damage caused by installation obstacles.

[0037] In this embodiment, the two groove walls of the notch 1210 are arc-shaped curved surfaces, which allows the duct 100 to maintain continuous and smooth contact with the arc-shaped groove walls during the process of entering the notch 1210, avoiding the jamming phenomenon caused by poor contact, and enabling the duct 100 to be pushed into the limiting hole 120 more smoothly.

[0038] More specifically, the support member 11 is annular, and a notch 110 is provided at one end of the support member 11 facing the notch groove 1210. When the duct 100 extends into the conduit 200, the support member 11 can circumferentially surround the duct 100. The duct 100 can enter the area enclosed by the annular support member 11 through the notch groove 1210 and the notch 110, and then enter the limiting hole 120. Furthermore, in actual operation, the limiting plate 12 may be subjected to external forces from different directions along the horizontal direction. At this time, since the support member 11 is annular, the inner wall of the conduit 200 can restrict the annular support member 11 from various directions, thereby limiting the displacement of the limiting plate 12 in various directions, and thus further improving the stability of the duct 100.

[0039] In this embodiment, the support member 11 is a ring, and the radius of the support member 11 is 3cm-5cm smaller than the radius of the conduit 200, for example, 3cm, 4cm or 5cm. This ensures that the support member 11 can be stably installed inside the conduit 200 and maintain a suitable distance from the inner wall of the conduit 200. This provides reliable support for the limiting plate 12 without causing instability due to excessive distance or causing installation difficulties and component wear due to insufficient distance.

[0040] In other embodiments, the support member 11 is not limited to a ring shape. The support member 11 may also include multiple support blocks. When the duct 100 extends into the conduit 200, the multiple support blocks can circumferentially surround the duct 100. There is no specific limitation on the number of support blocks. The number and distribution of support blocks can be flexibly adjusted according to the different diameters of the duct 100.

[0041] Specifically, the support portion 121 is elongated, and the operating handle 122 is located at one end of the support portion 121 along its length. When the fixing assembly 1 is in the supporting state, the end of the support portion 121 away from the operating handle 122 is located on the outside of the conduit 200. Since both the operating handle 122 and the end of the support portion 121 away from the operating handle 122 are located on the outside of the conduit 200, the opposite ends of the limiting plate 12 can cover the top of the conduit 200, effectively preventing the end of the support portion 121 away from the operating handle 122 from tilting into the conduit 200 under external force, thus ensuring the stability of the fixing assembly 1. Furthermore, because the support portion 121 is elongated, it reduces space occupation while ensuring stability.

[0042] In other embodiments, the support portion 121 may also be circular or square, etc., and the specific shape of the support portion 121 is not limited here. Furthermore, when the fixing component 1 is in the bearing state, the end of the support portion 121 away from the operating handle 122 does not necessarily have to be located on the outside of the conduit 200, as long as the limiting plate 12 can stably abut against the top of the conduit 200 when the fixing component 1 is in the bearing state.

[0043] Specifically, a grip 1221 is provided on the operating handle 122. The grip 1221 provides the operator with a better point of force application, and the operator can use the grip 1221 to more effectively transfer force to the operating handle 122, making the operation easier and more accurate.

[0044] In this embodiment, the operating handle 122 is elongated and connected to the support portion 121 along its length.

[0045] In this embodiment, the grip 1221 is located on the side of the operating handle 122 away from the support 11. The grip 1221 is arc-shaped, which can conform to the bending trajectory of the human hand when it naturally grips, thereby improving the comfort and convenience of operation.

[0046] Specifically, such as Figure 1 As shown, the limiting member 2 is annular and can be fitted onto the outside of the duct 100. During the air-lift reverse circulation process, the duct 100 is subjected to external forces such as airflow and slurry flow. The annular limiting member 2 can evenly distribute these forces onto the limiting plate 12, ensuring that the duct 100 remains stable and reliable during long-term use. Furthermore, the fitted installation method is simple to operate and easy to install.

[0047] In this embodiment, the limiting member 2 is a flange.

[0048] In other embodiments, the limiting member 2 is not limited to a ring shape, but can also be a block with a connecting hole, and the limiting member 2 is sleeved on the outside of the air duct 100 through the connecting hole.

[0049] More specifically, the limiting member 2 is provided with internal threads, and the air duct 100 is provided with external threads. The limiting member 2 and the air duct 100 are screwed together by the internal and external threads. First, the threaded connection facilitates the installation and disassembly of the limiting member 2; second, the threaded connection allows construction personnel to easily rotate the limiting member 2 according to actual working conditions, precisely adjusting the length of the air duct 100 extending into the duct 200, so that the construction process can better adapt to various complex actual situations.

[0050] Specifically, the limiting hole 120 is a strip-shaped hole, and the duct 100 can move along the length of the limiting hole 120. Construction personnel can adjust the position of the duct 100 along the length of the limiting hole 120 according to actual needs, such as the flow of mud, to ensure that it is in the most suitable working position within the guide tube 200, thereby improving the operating efficiency of the entire system.

[0051] In this embodiment, the length direction of the limiting hole 120 is consistent with the length direction of the bearing portion 121.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An air-lift reverse circulation air hose fixing device for assisting the fixation of an air hose (100) to a guide pipe (200) in a bored pile hole, characterized in that, The utility model relates to a kind of fixed assembly (1), including support (11) and limiting plate (12), the limiting plate (12) is provided with limiting hole (120), the support (11) is connected to the limiting plate (12), when the fixed assembly (1) is in load state, the limiting plate (12) is abutted to the top end of the conduit (200), the support (11) is inserted into the conduit (200); Limiting piece (2), the limiting piece (2) is connected to the outer wall of the air pipe (100), when the fixed assembly (1) is in the load state, the limiting piece (2) is abutted to the side of the limiting plate (12) away from the support (11), and the air pipe (100) is inserted into the conduit (200) through the limiting hole (120). The limiting plate (12) includes a load-bearing portion (121) and an operating handle (122) connected to each other, the limiting hole (120) is provided in the load-bearing portion (121), and the support (11) is connected to the load-bearing portion (121). When the fixed assembly (1) is in the load state, the load-bearing portion (121) is arranged on the top end of the conduit (200), and the operating handle (122) is located outside the conduit (200).

2. The air-lift reverse circulation air hose holder of claim 1, wherein, An undercut groove (1210) is provided at one end of the load-bearing portion (121) away from the operating handle (122) and communicates with the limiting hole (120), so that the air pipe (100) can enter the limiting hole (120) through the undercut groove (1210).

3. The gas lift reverse circulation air hose securing device of claim 2, wherein, The distance between the two groove walls of the undercut groove (1210) gradually increases in the direction away from the limiting hole (120).

4. The air-lift reverse-circulation air hose holder of claim 3, wherein, The support (11) is annular, and an undercut (110) is provided at one end of the support (11) facing the undercut groove (1210), so that the support (11) can circumferentially surround the air pipe (100) when the air pipe (100) is inserted into the conduit (200).

5. The air-lift reverse-circulation air hose holder of claim 3, wherein, The load-bearing portion (121) is long strip-shaped, and the operating handle (122) is located at one end of the load-bearing portion (121) in the length direction. When the fixed assembly (1) is in the load state, the end of the load-bearing portion (121) away from the operating handle (122) is located outside the conduit (200).

6. The air-lift reverse circulation air hose holder of claim 2, wherein, A gripping member (1221) is provided on the operating handle (122).

7. The air-lift reverse-circulation air hose holder of claim 2, wherein, The limiting piece (2) is annular and can be sleeved outside the air pipe (100).

8. The air-lift reverse-circulation air hose holder of claim 1, wherein, The limiting piece (2) is provided with internal threads, and the air pipe (100) is provided with external threads. The limiting piece (2) and the air pipe (100) are screwed through the internal threads and the external threads.

9. The gas lift reverse circulation air hose securing device of claim 8, wherein, The limiting hole (120) is a strip-shaped hole, and the air pipe (100) can move along the length direction of the limiting hole (120).

10. The air-lift reverse-circulation hose holder apparatus of any one of claims 1-9, wherein, ​

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