Self-made gas lift reverse circulation connector suitable for mucky clay

Abstract

The utility model relates to the field of pile hole construction, in particular to a self-made air lift reverse circulation connector suitable for mucky clay, which comprises a slurry outlet pipe with a closed top end and used for being inserted into a pile hole, an air inlet pipe is further arranged on the slurry outlet pipe, one end of the air inlet pipe extends into the slurry outlet pipe, and the other end of the air inlet pipe is communicated with an air compressor. The slurry outlet pipe is communicated with a slurry discharging pipe, the communication position is arranged in a bent mode, and the bending angle of the communication position of the slurry outlet pipe and the slurry discharging pipe is larger than 90 degrees. The device has the advantage of reducing the possibility that sludge sediment blocks the slurry discharging pipe.

Description

Technical Field

[0001] The present application relates to the field of pile hole construction, and in particular to a self-made gas lift reverse circulation joint suitable for silty clay. Background Art

[0002] During or after the drilling process, soil and rocks on the wall and bottom of the pile hole will fall off and gather at the bottom of the pile hole to form sediment. The presence of sediment reduces the support of the foundation for the foundation piles and affects the stability of the building foundation. Therefore, the air lift reverse circulation hole cleaning method is usually used to remove the sediment.

[0003] A traditional gas lift reverse circulation joint usually includes a slurry outlet pipe for inserting into the pile hole and a slurry discharge pipe connected to the slurry outlet pipe, the two are perpendicular to each other, the top of the slurry outlet pipe is closed and an air inlet pipe is arranged, one end of the air inlet pipe extends into the slurry outlet pipe and is close to the bottom of the slurry outlet pipe, and the other end is connected to an air compressor placed on the ground.

[0004] When the soil at the construction site is silt, the sediment at the bottom of the pile is mostly large pieces of silt clay, and the diameter of the traditional slurry discharge pipe is usually small and perpendicular to the slurry outlet pipe. Therefore, the connection between the slurry discharge pipe and the slurry outlet pipe may be frequently blocked during the hole cleaning process, which is obviously insufficient. Utility Model Content

[0005] In order to improve the problem that the slurry discharge pipe may be blocked, the present application provides a self-made gas lift reverse circulation joint suitable for silty clay.

[0006] The application provides a self-made gas lift reverse circulation joint suitable for silty clay, which adopts the following technical solution:

[0007] A self-made air lift reverse circulation joint suitable for silty clay, comprising a slurry outlet pipe with a closed top and used for inserting into a pile hole, an air inlet pipe is also arranged on the slurry outlet pipe, one end of the air inlet pipe extends into the slurry outlet pipe, and the other end is connected to an air compressor, the slurry outlet pipe is connected to a slurry discharge pipe and the connection is bent, and the bending angle of the connection between the slurry outlet pipe and the slurry discharge pipe is greater than 90°.

[0008] By adopting the above technical solution, since the bending angle at the connection point between the slurry outlet pipe and the slurry discharge pipe is relatively large, the blocky clay sediment can pass through more easily, thereby reducing the possibility of blockage of the slurry discharge pipe.

[0009] Optionally, the bending angle of the slurry outlet pipe and the slurry discharge pipe at the connection point is 120°.

[0010] By adopting the above technical solution, the 120° bending angle can ensure that the block sediment can pass smoothly through the connection between the slurry outlet pipe and the slurry discharge pipe.

[0011] Optionally, the outer diameter of the slurry discharge pipe is 194 mm.

[0012] By adopting the above technical solution, the diameter of the slurry discharge pipe is increased, and the possibility of blockage of the slurry discharge pipe by massive sediment is further reduced.

[0013] Optionally, the slurry outlet pipe includes a steel conduit and a conduit cap connected to the top end thereof, the air inlet pipe and the slurry discharge pipe are both located on the conduit cap, and the conduit cap is connected to the steel conduit via a spiral threaded joint.

[0014] By adopting the above technical solution, the conduit cap and the steel conduit can be disassembled, so that the gas lift reverse circulation joint can be circulated and practical, which reduces the cost and improves the economic benefit to a certain extent.

[0015] Optionally, a load-bearing swivel is rotatably arranged inside the steel conduit, and a plurality of spiral crushing blades are circumferentially arranged on the load-bearing swivel.

[0016] By adopting the above technical solution, when the mud surges upward in the steel pipe, its pushing effect on the spiral crushing blade causes the spiral crushing blade to rotate, thereby crushing the block sediment entrained in the mud, reducing the possibility of the sediment clogging the slag discharge pipe.

[0017] Optionally, the steel conduit includes a plurality of unit tubes that are detachably connected to each other, the ends of two adjacent unit tubes are formed with installation cavities and are plug-fitted together, and the load-bearing swivel is located in the installation cavity and rotatably cooperates with the installation cavity.

[0018] By adopting the above technical solution, when clay adheres to the spiral crushing blade, causing its crushing effect to deteriorate, workers can disassemble the two adjacent unit pipes to clean the spiral crushing blade.

[0019] Optionally, sealing grooves are provided on both axial sides of the load-bearing swivel, and sealing rings are arranged in the sealing grooves and are tightly attached to the side walls of the installation cavity.

[0020] By adopting the above technical solution, the sealing ring improves the sealing effect between the load-bearing swivel and the installation cavity, which is beneficial to reducing the possibility of small particles of sediment entrained by mud entering the installation cavity.

[0021] Optionally, an oil filling port is connected to a position of the unit tube relative to the installation cavity, and a screw cap is threadedly connected to an open end of the oil filling port.

[0022] By adopting the above technical solution, workers inject lubricating oil into the installation cavity through the oil filling port, thereby improving the smoothness of the rotation of the load-bearing swivel in the installation cavity.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Since the bending angle at the connection point between the slurry discharge pipe and the slurry discharge pipe is relatively large, the massive clay sediment can pass through more easily, thereby reducing the possibility of blockage of the slurry discharge pipe;

[0025] 2. The guide tube cap and the steel guide tube can be disassembled, so that the gas lift reverse circulation joint can be used in a practical manner, which reduces the cost and improves the economic benefits to a certain extent;

[0026] 3. When the mud surges upward in the steel pipe, its pushing effect on the spiral crushing blade causes the spiral crushing blade to rotate, thereby crushing the blocky sediment entrained in the mud, reducing the possibility of sediment blocking the slag discharge pipe;

[0027] 4. When clay adheres to the spiral crushing blade, causing its crushing effect to deteriorate, workers can disassemble the two adjacent unit pipes to clean the spiral crushing blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of Example 1 of the present application.

[0029] Figure 2 It is a cross-sectional view of the steel conduit in Example 2 of the present application.

[0030] Figure 3 yes Figure 2 Enlarged view of part A.

[0031] Explanation of the reference numerals in the accompanying drawings: 1. slurry outlet pipe; 11. steel conduit; 111. load-bearing swivel; 112. spiral crushing blade; 113. unit pipe; 2. installation cavity; 12. conduit cap; 3. air inlet pipe; 4. slurry discharge pipe; 5. spiral threaded joint; 7. sealing ring; 8. oil filling port; 9. screw cap; 10. ball bearing. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 This application is described in further detail.

[0033] Example 1

[0034] The embodiment of the present application discloses a self-made gas lift reverse circulation joint suitable for silty clay.

[0035] Reference Figure 1 The self-made gas lift reverse circulation joint suitable for silty clay includes a slurry outlet pipe 1 with a closed top and used to be inserted into a pile hole, an air inlet pipe 3 is penetrated and welded on the top of the slurry outlet pipe 1, one end of the air inlet pipe 3 is connected to an air compressor (not shown in the figure) through a PVC plastic hose, and the other end extends into the slurry outlet pipe 1.

[0036] The air intake pipe 3 is a steel pipe with an outer diameter of 50 mm and a wall thickness of 2.5 mm, and is bent at about 90°.

[0037] The top of the slurry outlet pipe 1 is also connected to a slurry discharge pipe 4. The connection between the slurry outlet pipe 1 and the slurry discharge pipe 4 is bent at an angle of 120°. The slurry discharge pipe 4 is a steel pipe with an outer diameter of 194 mm and a wall thickness of 5 mm.

[0038] Reference Figure 1 Compared with the existing gas lift reverse circulation joint, the present application reduces the possibility of blockage of the slurry discharge pipe 4 by increasing the diameter of the slurry discharge pipe 4 on the one hand and adjusting the bending angle between the slurry outlet pipe 1 and the slurry discharge pipe 4 on the other hand, which not only improves the effectiveness of the hole cleaning operation, but also improves production efficiency and benefits.

[0039] Reference Figure 1 In addition, compared with the traditional gas lift reverse circulation joint, the complexity and difficulty of the operation of this application are both less, so the construction efficiency and safety can be greatly improved. Furthermore, this application is also applicable to various geological conditions and has good versatility and adaptability.

[0040] Reference Figure 1 The slurry outlet pipe 1 includes a steel conduit 11 and a conduit cap 12 connected to the top end thereof. The air inlet pipe 3 and the slurry discharge pipe 4 are both located on the conduit cap 12 , and the conduit cap 12 is connected to the steel conduit 11 through a spiral threaded joint 5 .

[0041] The conduit cap 12 and the steel conduit 11 can be disassembled, so that the gas lift reverse circulation joint can be circulated and practical, which reduces the cost and improves the economic benefit to a certain extent.

[0042] The catheter cap 12 of the present application is modified from the model of the prior art, thereby reducing the cost and improving the economic benefit to a certain extent.

[0043] The implementation principle of Example 1 is: on the one hand, the diameter of the slurry discharge pipe 4 is increased, and on the other hand, the bending angle between the slurry outlet pipe 1 and the slurry discharge pipe 4 is adjusted, thereby reducing the possibility of blockage of the slurry discharge pipe 4, which not only improves the effectiveness of the hole cleaning operation, but also improves production efficiency and benefits.

[0044] Example 2

[0045] Reference Figure 2 and Figure 3 The difference between this embodiment and the embodiment is that the steel conduit 11 is split into a plurality of unit tubes 113, and the ends of two adjacent unit tubes 113 are formed with installation cavities 2, which are plug-fitted and bolted.

[0046] Reference Figure 2 and Figure 3A bearing swivel 111 is rotatably mounted in the mounting cavity 2, and a plurality of spiral crushing blades 112 are circumferentially welded on the bearing swivel 111. When the slurry surges upward in the steel pipe 11, the pushing effect on the spiral crushing blades 112 causes the spiral crushing blades 112 to rotate, thereby crushing the blocky sediment entrained in the slurry, reducing the possibility of the sediment blocking the slag discharge pipe.

[0047] Reference Figure 2 and Figure 3 A plurality of recesses are formed on the outer circumferential wall of the bearing swivel 111 , and a ball 10 rolls in each recess, and the ball 10 abuts against the side wall of the mounting cavity 2 .

[0048] Reference Figure 2 and Figure 3 A sealing groove 6 (not shown in the figure) is provided on both sides of the axial direction of the load-bearing rotating ring 111, and a sealing ring 7 is arranged in the sealing groove 6 and is closely attached to the side wall of the installation cavity 2.

[0049] Reference Figure 2 and Figure 3 The unit tube 113 is connected to the installation cavity 2 with an oil filling port 8, and the open end of the oil filling port 8 is threadedly connected with a screw cap 9. The worker injects lubricating oil into the installation cavity 2 through the oil filling port 8 to improve the smoothness of the rotation of the bearing swivel 111 in the installation cavity 2.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A self-made gas lift reverse circulation joint suitable for silty clay, characterized by: The invention comprises a slurry outlet pipe (1) with a closed top end and used for inserting into a pile hole. The slurry outlet pipe (1) is also provided with an air inlet pipe (3). One end of the air inlet pipe (3) extends into the slurry outlet pipe (1) and the other end is connected to an air compressor. The slurry outlet pipe (1) is connected to a slurry discharge pipe (4) and the connection is bent. The bending angle of the connection between the slurry outlet pipe (1) and the slurry discharge pipe (4) is greater than 90°.

2. The self-made gas lift reverse circulation joint suitable for muddy clay according to claim 1, characterized in that: The bending angle at the connection point between the slurry outlet pipe (1) and the slurry discharge pipe (4) is 120°.

3. The self-made gas lift reverse circulation joint suitable for muddy clay according to claim 1, characterized in that: The outer diameter of the slurry discharge pipe (4) is 194 mm.

4. The self-made gas lift reverse circulation joint suitable for muddy clay according to claim 1, characterized in that: The slurry discharge pipe (1) comprises a steel conduit (11) and a conduit cap (12) connected to the top end thereof, the air inlet pipe (3) and the slurry discharge pipe (4) are both located on the conduit cap (12), and the conduit cap (12) is connected to the steel conduit (11) via a spiral threaded joint (5).

5. The self-made gas lift reverse circulation joint suitable for muddy clay according to claim 4, characterized in that: A load-bearing rotating ring (111) is rotatably arranged inside the steel conduit (11), and a plurality of spiral crushing blades (112) are circumferentially arranged on the load-bearing rotating ring (111).

6. The self-made gas lift reverse circulation joint suitable for muddy clay according to claim 5, characterized in that: The steel conduit (11) comprises a plurality of unit tubes (113) which are detachably connected to each other, the ends of two adjacent unit tubes (113) are formed with mounting cavities (2) and are plug-fitted together, and the load-bearing swivel (111) is located in the mounting cavity (2) and is rotatably matched therewith.

7. The self-made gas lift reverse circulation joint suitable for muddy clay according to claim 6, characterized in that: The load-bearing rotating ring (111) is provided with sealing grooves (6) on both axial sides, and a sealing ring (7) is arranged in the sealing groove (6) and is tightly attached to the side wall of the installation cavity (2).

8. The self-made gas lift reverse circulation joint suitable for muddy clay according to claim 7, characterized in that: An oil filling port (8) is connected to a position of the unit tube (113) relative to the installation cavity (2), and a screw cap (9) is threadedly connected to the open end of the oil filling port (8).

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