Gas lift reverse circulation secondary hole cleaning device

Abstract

This utility model provides an air-lift reverse circulation secondary cleaning device, belonging to the field of cast-in-place pile construction technology. The air-lift reverse circulation secondary cleaning device includes a mud tank, an air compressor, an air-lift reverse circulation pipeline, and a clamping device. The air compressor is connected to an air supply pipeline. The air-lift reverse circulation pipeline is located at the center of the pile hole, and an air inlet pipeline is provided inside the pipeline, passing through the end of the pipeline and connecting to the air supply pipeline. A mud outlet pipeline is also provided at the end of the pipeline, extending into the mud tank. The clamping device is located at the outer edge of the pile hole. The clamping device includes a support base, two columns, and several sets of clamping arms. The support base is placed at the outer edge of the pile hole. The two columns are symmetrically arranged on both sides of the support base. The several sets of clamping arms are rotatably mounted on the columns. This secondary cleaning device, after clamping the air-lift reverse circulation pipeline, can prevent the pipeline from shaking back and forth, reducing safety hazards.

Description

Technical Field

[0001] This utility model belongs to the field of cast-in-place pile construction technology, and more specifically, it relates to an air-lift reverse circulation secondary hole cleaning device. Background Technology

[0002] During drilling (especially in positive circulation drilling) and after the first cleaning, some drill cuttings inevitably remain suspended in the drilling mud or settle at the bottom of the hole. The first cleaning is usually performed before or after hoisting the drill string, but its effectiveness is limited by the equipment at the time (e.g., high drill rod position, distance between the suction port and the bottom of the hole) and the properties of the drilling mud, making it difficult to completely remove fine-particle sediment from the bottom of the hole, especially in dead corners. The second cleaning is a crucial step in the construction of mud-walled cast-in-place piles. Its main purpose is to thoroughly remove the sediment generated during the lowering process after the reinforcement cage and guide pipe are installed, ensuring the quality of the pile foundation.

[0003] When using the air-lift reverse circulation method for secondary hole cleaning, the air-lift reverse circulation pipeline is usually suspended by a machine for cleaning, which causes the air-lift reverse circulation pipeline to sway back and forth during the cleaning process, posing a certain safety hazard.

[0004] Based on this, the applicant applies to design an air-lift reverse circulation secondary cleaning device. Utility Model Content

[0005] The purpose of this invention is to provide an air-lift reverse circulation secondary cleaning device to solve the technical problem in the prior art where the air-lift reverse circulation pipeline shakes back and forth during secondary cleaning, creating a safety hazard.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A secondary cleaning device for air-lift reverse circulation is provided, comprising a mud tank, an air compressor, an air-lift reverse circulation pipeline, and a clamping device; the mud tank is used to collect mud; the air compressor is connected to an air supply pipeline for supplying compressed air; the air-lift reverse circulation pipeline is located at the center of the pile hole, and an air inlet pipe is provided inside the air-lift reverse circulation pipeline, the air inlet pipe passing through the end of the air-lift reverse circulation pipeline and connected to the air supply pipeline; the end of the air-lift reverse circulation pipeline is also provided with a mud outlet pipe, the mud outlet pipe extending into the mud tank; the clamping device is located on the outer edge of the pile hole for clamping and fixing the air-lift reverse circulation pipeline; wherein, the clamping device includes a support base, two columns, and several sets of clamping arms; the support base is placed on the outer edge of the pile hole; the two columns are symmetrically arranged on both sides of the support base; the several sets of clamping arms are rotatably mounted on the columns for clamping the air-lift reverse circulation pipeline.

[0007] In one possible implementation, based on the above technical solutions, a through groove is provided at the center of the support base for placing the air-lift reverse circulation pipe. A first slot and a second slot are provided on the end face of the support base. The two columns are a first column and a second column, with the first column placed in the first slot and the second column placed in the second slot.

[0008] In one possible implementation, based on the above technical solutions, the first slot is connected to two first limiting holes, the second slot is connected to two second limiting holes, the first column is provided with three or more third limiting holes, and the second column is provided with three or more fourth limiting holes. Fasteners are installed in the first limiting holes and the third limiting holes, as well as in the second limiting holes and the fourth limiting holes.

[0009] In one possible implementation, based on the above technical solutions, a mud channel is provided on one side of the support base, and arc-shaped clamps are connected to both sides of the mud channel by elastic elements.

[0010] In one possible implementation, based on the above technical solutions, the outer surface of the first column is provided with a plurality of first rotating grooves, the outer surface of the second column is provided with a plurality of second rotating grooves, the first column is provided with a first roller groove and a second roller groove, the second column is provided with a third roller groove and a fourth roller groove, the first roller groove and the second roller groove are connected to the first rotating groove, and the third roller groove and the fourth roller groove are connected to the second rotating groove.

[0011] In one possible implementation, based on the above technical solutions, each set of clamping arms includes a first clamping arm and a second clamping arm, wherein the first clamping arm and the second clamping arm have the same structure.

[0012] In one possible implementation, based on the above technical solutions, both ends of the first clamping arm and the second clamping arm are provided with insertion holes. One end of the first clamping arm and the second clamping arm are inserted into the first rotating groove of the first column, and the other end is inserted into the second rotating groove of the second column. An insertion roller is inserted into the insertion hole for positioning.

[0013] In one possible implementation, based on the above technical solutions, both the first clamping arm and the second clamping arm are provided with clamping rings, and an annular groove is formed on the outer surface of the air-lift reverse circulation pipe. The clamping ring is fitted into the annular groove to fix the air-lift reverse circulation pipe.

[0014] In one possible implementation, based on the above technical solutions, a rubber pad is bonded to the bottom side of the support base.

[0015] The beneficial effects of the air-lift reverse circulation secondary cleaning device provided by this utility model are as follows: Compared with the prior art, the secondary cleaning device provided by this utility model is equipped with a clamping device, which includes a support base, two columns and several sets of clamping arms. When clamping the air-lift reverse circulation pipe, the support base is first placed on the outer edge of the pile hole, and then the two columns are installed. At this time, the air-lift reverse circulation pipe can be placed. After it is placed in a suitable position, the clamping arms can be installed so that the clamping arms clamp the air-lift reverse circulation pipe. After clamping the air-lift reverse circulation pipe, this secondary cleaning device can prevent the air-lift reverse circulation pipe from shaking back and forth, reducing safety hazards. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the air-lift reverse circulation secondary cleaning device provided in an embodiment of the present invention;

[0018] Figure 2 Schematic diagram of the clamping device of the air-lift reverse circulation secondary cleaning device provided in this embodiment of the utility model Figure 2 ;

[0019] Figure 3 A schematic diagram of the structure of the first column and the second column of the air-lift reverse circulation secondary cleaning device provided in an embodiment of this utility model;

[0020] Figure 4 A schematic diagram of the support base of the air-lift reverse circulation secondary cleaning device provided in this embodiment of the utility model;

[0021] Figure 5 A schematic diagram of the arc-shaped clamping plate of the air-lift reverse circulation secondary cleaning device provided in this embodiment of the utility model;

[0022] Figure 6 A schematic diagram of the first and second clamping arms of the air-lift reverse circulation secondary cleaning device provided in an embodiment of this utility model;

[0023] Figure 7 This is a structural diagram of the annular groove of the air lift reverse circulation pipeline in the air lift reverse circulation secondary cleaning device provided in this embodiment of the utility model.

[0024] The labels for the attached figures are as follows:

[0025] 100. Mud pit; 200. Air compressor; 210. Air supply pipeline; 300. Air lift reverse circulation pipeline;

[0026] 310. Air inlet pipe; 320. Circular groove; 330. Sludge outlet pipe; 400. Clamping device;

[0027] 410, Support base; 411, Through groove; 412, First slot; 4121, First limiting hole;

[0028] 413, Second slot; 4131, Second limiting hole; 414, Mud channel; 4141, Arc-shaped clamp;

[0029] 415. Rubber pad; 420. Column; 421. First column; 4211. Third limiting hole;

[0030] 4212, First trough; 4213, First roller trough; 4214, Second roller trough; 422, Second column;

[0031] 4221, Fourth limiting hole; 4222, Second rotating groove; 4223, Third roller groove; 4224, Fourth roller groove; 430, Clamping arm; 431, First clamping arm; 432, Second clamping arm; 433, Insertion hole; 434, Clamping ring. Detailed Implementation

[0032] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] It should be further explained that the accompanying drawings and embodiments of this utility model mainly describe the concept of this utility model. Based on this concept, some specific forms and settings of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this utility model, they can implement the above-mentioned specific forms and settings in a well-known manner.

[0034] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0035] The directional terms "inner" and "outer" refer to the inner and outer sides relative to the outline of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0038] The present invention provides a description of an air-lift reverse circulation secondary cleaning device.

[0039] like Figure 1 and Figure 2As shown, this utility model provides an air-lift reverse circulation secondary borehole cleaning device, including a mud tank 100, an air compressor 200, an air-lift reverse circulation pipeline 300, and a clamping device 400; the mud tank 100 is used to collect mud; the air compressor 200 is connected to an air supply pipeline 210 for supplying compressed air; the air-lift reverse circulation pipeline 300 is located at the center of the pile hole, and an air inlet pipeline 310 is provided inside the air-lift reverse circulation pipeline 300, which passes through the end of the air-lift reverse circulation pipeline 300 and is connected to the air supply pipeline 210. The end of the channel 300 is also provided with a mud discharge pipe 330, which extends into the mud pool 100; the clamping device 400 is provided on the outer edge of the pile hole to clamp and fix the air-lift reverse circulation pipe 300; wherein, the clamping device 400 includes a support base 410, two columns 420 and several sets of clamping arms 430; the support base 410 is placed on the outer edge of the pile hole; the two columns 420 are symmetrically arranged on both sides of the support base 410; the several sets of clamping arms 430 are rotatably arranged on the columns 420 to clamp the air-lift reverse circulation pipe 300.

[0040] This utility model provides an air-lift reverse circulation secondary cleaning device. Compared with the prior art, the secondary cleaning device provided by this utility model is equipped with a clamping device 400. The clamping device 400 includes a support base 410, two columns 420, and several sets of clamping arms 430. When clamping the air-lift reverse circulation pipe 300, the support base 410 is first placed on the outer edge of the pile hole, and then the two columns 420 are installed. At this time, the air-lift reverse circulation pipe 300 can be placed. After being placed in a suitable position, the clamping arms 430 can be installed so that the clamping arms 430 clamp the air-lift reverse circulation pipe 300. After clamping the air-lift reverse circulation pipe 300, this secondary cleaning device can prevent the air-lift reverse circulation pipe 300 from shaking back and forth, reducing safety hazards.

[0041] like Figure 3 and Figure 4 As shown, in a specific embodiment of the air-lift reverse circulation secondary cleaning device provided in this utility model, a through groove 411 is provided at the center of the support base 410 for placing the air-lift reverse circulation pipe 300. A first slot 412 and a second slot 413 are provided on the end face of the support base 410. The two columns 420 are a first column 421 and a second column 422. The first column 421 is placed in the first slot 412 and the second column 422 is placed in the second slot 413.

[0042] Specifically, before placing the air-lift reverse circulation pipe 300, the support base 410 needs to be placed at the outer edge of the pile hole. After placement, the air-lift reverse circulation pipe 300 can be lowered through the through groove 411. In addition, to enhance the portability of this hole cleaning device, the first column 421 and the second column 422 are designed to be detachable relative to the support base 410. Before clamping the air-lift reverse circulation pipe 300, the first column 421 and the second column 422 need to be fixed relative to the support base 410.

[0043] like Figure 2 and Figure 4 As shown, in a specific embodiment of the air-lift reverse circulation secondary cleaning device provided in this utility model embodiment, the first slot 412 is connected to two first limiting holes 4121, the second slot 413 is connected to two second limiting holes 4131, the first column 421 is provided with three or more third limiting holes 4211, and the second column 422 is provided with three or more fourth limiting holes 4221. Fasteners are installed in the first limiting holes 4121 and the third limiting holes 4211, as well as in the second limiting holes 4131 and the fourth limiting holes 4221. The fasteners can be bolts, screws, or screws, etc.

[0044] It should be noted that when fixing the first column 421 and the second column 422, the first column 421 is first placed into the first slot 412, and the second column 422 is placed into the second slot 413. After reaching the appropriate position, fasteners are inserted and installed in the third limiting hole 4211 and the first limiting hole 4121, as well as in the fourth limiting hole 4221 and the second limiting hole 4131, to fix the first column 421 and the second column 422 relative to the support base 410. In addition, in order to enable the first column 421 and the second column 422 to be adjusted to multiple levels of height, the number of the third limiting hole 4211 and the fourth limiting hole 4221 is more than three, while the number of the first limiting hole 4121 and the second limiting hole 4131 is two. After fixing, two fasteners are inserted into the third limiting hole 4211 and the first limiting hole 4121, and two fasteners are inserted into the fourth limiting hole 4221 and the second limiting hole 4131.

[0045] like Figure 2 and Figure 5 As shown, in a specific embodiment of the air-lift reverse circulation secondary cleaning device provided in this utility model, a mud channel 414 is provided on one side of the support base 410, and arc-shaped clamping plates 4141 are connected to both sides of the mud channel 414 by elastic members.

[0046] Furthermore, currently, the mud from the mud pit 100 is generally introduced into the air-lift reverse circulation pipe 300 by digging a trench for drainage. However, this method actually causes some damage to the ground environment near the pile hole, resulting in mud being scattered everywhere. This hole cleaning device has a mud channel 414 on one side, and an arc-shaped clamp 4141 is installed inside the mud channel 414 and connected by an elastic element, which is a spring. One end of the elastic element is welded to the side wall of the mud channel 414, and the other end is welded to the arc-shaped clamp 4141. When draining the mud, a mud pump is placed in the mud pit 100, and a drainage pipe is connected to the outside of the mud pump. The drainage pipe extends into the air-lift reverse circulation pipe 300 through the mud pipe, and is clamped by the arc-shaped clamps 4141 on both sides to prevent the drainage pipe from moving and detaching from the mud channel 414.

[0047] like Figure 3 As shown, in a specific embodiment of the air-lift reverse circulation secondary cleaning device provided in this utility model, the outer surface of the first column 421 is provided with a plurality of first rotating grooves 4212, the outer surface of the second column 422 is provided with a plurality of second rotating grooves 4222, the first column 421 is provided with a first roller groove 4213 and a second roller groove 4214, the second column 422 is provided with a third roller groove 4223 and a fourth roller groove 4224, the first roller groove 4213 and the second roller groove 4214 are connected to the first rotating groove 4212, and the third roller groove 4223 and the fourth roller groove 4224 are connected to the second rotating groove 4222.

[0048] like Figure 6 As shown, in a specific embodiment of the air-lift reverse circulation secondary cleaning device provided in this utility model embodiment, each set of clamping arms 430 includes a first clamping arm 431 and a second clamping arm 432, and the first clamping arm 431 and the second clamping arm 432 have the same structure.

[0049] like Figure 6 As shown, in a specific embodiment of the air-lift reverse circulation secondary cleaning device provided in this utility model, both ends of the first clamping arm 431 and the second clamping arm 432 are provided with insertion holes 433. One end of the first clamping arm 431 and the second clamping arm 432 are inserted into the first rotating groove 4212 of the first column 421, and the other end is inserted into the second rotating groove 4222 of the second column 422. An insertion roller is inserted into the insertion hole 433 for limiting.

[0050] like Figure 6 and Figure 7 As shown, in a specific embodiment of the air-lift reverse circulation secondary cleaning device provided in this utility model embodiment, clamping rings 434 are provided on the first clamping arm 431 and the second clamping arm 432, and an annular groove 320 is opened on the outer surface of the air-lift reverse circulation pipe 300. The clamping rings 434 are sleeved in the annular groove 320 to fix the air-lift reverse circulation pipe 300.

[0051] Specifically, during the clamping process of the air-lift reverse circulation pipe 300, the first clamping arm 431 and the second clamping arm 432 are always in contact with and clamp the air-lift reverse circulation pipe 300. When clamping the air-lift reverse circulation pipe 300, the air-lift reverse circulation pipe 300 is first lowered. After it has fallen to a suitable position, the first clamping arms 431 and the second clamping arms 432 are installed. First, one end of several first clamping arms 431 and second clamping arms 432 is placed into the first rotating groove 4212 of the first column 421. Then, insert the roller into the first roller groove 4213 and the second roller groove 4214. At this time, the first clamping arm 431 and the second clamping arm 432 can rotate, and the clamping ring 434 is rotated into the inside of the ring groove 320 so that the two fit tightly together. At this time, the other end of the first clamping arm 431 and the second clamping arm 432 just enters the second rotating groove 4222 of the second column 422. Then, insert the roller into the third roller groove 4223 and the fourth roller groove 4224 to complete the clamping of the air lift reverse circulation pipe 300.

[0052] like Figure 5 As shown, in a specific embodiment of the air-lift reverse circulation secondary cleaning device provided in this utility model, a rubber pad 415 is bonded to the bottom side of the support base 410. The rubber pad 415 can enhance the friction coefficient with the ground, making the support base 410 less likely to move during the cleaning process.

[0053] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0054] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0055] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A gas-lift reverse circulation secondary cleaning device, characterized in that, include: Mud pit (100), used to collect mud; An air compressor (200) is connected to an air delivery pipe (210) for delivering compressed air; An air-lift reverse circulation pipe (300) is located at the center of the pile hole. An air inlet pipe (310) is provided inside the air-lift reverse circulation pipe (300). The air inlet pipe (310) passes through the end of the air-lift reverse circulation pipe (300) and is connected to the air delivery pipe (210). A mud outlet pipe (330) is also provided at the end of the air-lift reverse circulation pipe (300). The mud outlet pipe (330) extends into the mud tank (100). A clamping device (400) is provided on the outer edge of the pile hole to clamp and fix the air-lift reverse circulation pipe (300); The clamping device (400) includes: A support base (410) is placed on the outer edge of the pile hole; Two columns (420) are symmetrically arranged on both sides of the support base (410); Several sets of clamping arms (430) are rotatably mounted on the column (420) to clamp the air-lift reverse circulation pipe (300).

2. The air-lift reverse circulation secondary cleaning device as described in claim 1, characterized in that: The support base (410) has a through groove (411) at its center for placing the air-lift reverse circulation pipe (300). The support base (410) has a first slot (412) and a second slot (413) on its end face. The two columns (420) are a first column (421) and a second column (422). The first column (421) is placed in the first slot (412), and the second column (422) is placed in the second slot (413).

3. The air-lift reverse circulation secondary cleaning device as described in claim 2, characterized in that: The first slot (412) is connected to two first limiting holes (4121), the second slot (413) is connected to two second limiting holes (4131), the first column (421) is provided with three or more third limiting holes (4211), and the second column (422) is provided with three or more fourth limiting holes (4221). Fasteners are installed in the first limiting holes (4121) and the third limiting holes (4211), as well as in the second limiting holes (4131) and the fourth limiting holes (4221).

4. The air-lift reverse circulation secondary cleaning device as described in claim 1, characterized in that: A mud channel (414) is provided on one side of the support base (410), and arc-shaped clamps (4141) are connected to both sides of the mud channel (414) by elastic elements.

5. The air-lift reverse circulation secondary cleaning device as described in claim 3, characterized in that: The outer surface of the first column (421) is provided with a plurality of first rotating grooves (4212), and the outer surface of the second column (422) is provided with a plurality of second rotating grooves (4222). The first column (421) is provided with a first roller groove (4213) and a second roller groove (4214), and the second column (422) is provided with a third roller groove (4223) and a fourth roller groove (4224). The first roller groove (4213) and the second roller groove (4214) are connected to the first rotating groove (4212), and the third roller groove (4223) and the fourth roller groove (4224) are connected to the second rotating groove (4222).

6. The air-lift reverse circulation secondary cleaning device as described in claim 5, characterized in that: Each set of clamping arms (430) includes a first clamping arm (431) and a second clamping arm (432), the first clamping arm (431) and the second clamping arm (432) having the same structure.

7. The air-lift reverse circulation secondary cleaning device as described in claim 6, characterized in that: Both ends of the first clamping arm (431) and the second clamping arm (432) are provided with insertion holes (433). One end of the first clamping arm (431) and the second clamping arm (432) are inserted into the first rotating groove (4212) of the first column (421), and the other end is inserted into the second rotating groove (4222) of the second column (422). An insertion roller is inserted into the insertion hole (433) for limiting.

8. The air-lift reverse circulation secondary cleaning device as described in claim 7, characterized in that: Both the first clamping arm (431) and the second clamping arm (432) are provided with clamping rings (434). An annular groove (320) is provided on the outer surface of the air-lift reverse circulation pipe (300). The clamping ring (434) is sleeved in the annular groove (320) to fix the air-lift reverse circulation pipe (300).

9. The air-lift reverse circulation secondary cleaning device as described in claim 1, characterized in that: A rubber pad (415) is bonded to the bottom side of the support base (410).

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