A hole cleaning bucket for a drilled pile and a method of use

Abstract

The application discloses a bored pile hole cleaning and residue fishing bucket and a use method, and belongs to the field of foundation engineering construction. The bored pile hole cleaning and residue fishing bucket and the use method comprise a second filtering and cleaning bucket, the lower end of the second filtering and cleaning bucket is provided with a connecting ring, the first filtering and cleaning bucket, the connecting ring and the second filtering and cleaning bucket are welded and fixed, the interiors of the first filtering and cleaning bucket and the second filtering and cleaning bucket are provided with cleaning cavities, and the inside lower end of the cleaning cavity is provided with a closed idle plate. The application solves the problem that the filter screen support of the existing bored pile residue cleaning device needs to be actively unfolded and stored, the overall structure and position are more active, and the device is stuck in the whole when being repeatedly used in the bored pile with more foreign matters for a long time. When the device is longitudinally moved downward and contacts liquid, the impact of the object actively pushes the closed idle plate to rotate around the connecting shaft as the center and unfold.

Description

Technical Field

[0001] This invention relates to the field of foundation engineering construction, specifically to a drilled pile cleaning and slag removal bucket and its usage method. Background Technology

[0002] Drilling is required in many construction processes. Because wet drilling of cast-in-place piles produces good hole quality, it is often used in hard rock sections and deep water bed pile foundation construction. However, the removal of the pile bottom sediment after hammering is not thorough using mud circulation, and the quality of the cleaning is not guaranteed. This often leads to insufficient bearing capacity at the pile tip or poor integrity of the pile body, and also pollutes the environment. In order to overcome the above technical problems, it is necessary to clean the drilling site after drilling. During the cleaning process, a slag removal device is required.

[0003] Chinese Patent Publication No. CN105821880A discloses a slag removal device and method for bored piles, comprising a lifting ring, a flushing pipe, a water inlet, a slip sleeve, a diagonal brace, a filter screen bracket, a water flushing port, and a filter screen. The top center of the flushing pipe is sealed and fixed to the lifting ring, and its side is connected to the water inlet. The lower middle part of the flushing pipe is connected to the slip sleeve. The bottom center is fixed to the water flushing port, and its side is connected to one end of the filter screen bracket. The two ends of the diagonal brace are respectively connected to the middle of the slip sleeve and the filter screen bracket. The filter screen covers the filter screen bracket. The beneficial effect of this invention is that it can clean the sediment at the bottom of the bored pile, making the bearing capacity of the bored pile reliable.

[0004] In actual use, the aforementioned drilled pile slag removal device requires the device itself to slide outside the water inlet during the cleaning of internal foreign objects, while the filter screen support needs to be actively unfolded and retracted. The overall structure and positions that need to move are numerous. Repeated use in drilled piles with a large number of foreign objects for a long time will cause the entire device to jam, affecting normal use. Therefore, it does not meet the existing needs. In response, we propose a drilled pile hole cleaning and slag removal bucket and its usage method. Summary of the Invention

[0005] The purpose of this invention is to provide a borehole cleaning and slag removal bucket and its usage method. When the device moves longitudinally downward and comes into contact with the liquid, the impact of the object will actively push the closed idle plate to rotate and unfold around the rotating connecting shaft. When the device is pulled longitudinally upward and filters, the foreign objects inside the device will be pushed by their own weight to rotate towards the fixed base plate around the rotating connecting shaft, rotating and actively closing the device, leaving only the first and second filter screens for filtration. During the use of the device, the weight and impact force of the liquid itself are used to reduce the number of rotating parts inside the device, thereby achieving a filtration effect. This avoids excessive rotating structures that could cause the device to jam, improves the overall service life of the device, and avoids frequent maintenance that would affect usage efficiency, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drilled pile hole cleaning and slag removal bucket, comprising a second filter cleaning bucket, wherein a connecting ring is provided at the lower end of the second filter cleaning bucket, and four suspension blocks are evenly distributed in a ring shape on the connecting ring, wherein each of the four suspension blocks is provided with a suspension through hole, and the suspension through hole extends through and to the upper and lower ends of the suspension block.

[0007] It also includes a first filter cleaning bucket, which is disposed at the lower end of the connecting ring. The first filter cleaning bucket, the connecting ring and the second filter cleaning bucket are welded and fixed together. Both the first filter cleaning bucket and the second filter cleaning bucket are provided with cleaning chambers inside. A closed idle plate is provided on one side of the lower end of the cleaning chamber. An upper filter ring is provided on the other side of the lower end of the second filter cleaning bucket. A lower filter ring is provided on the other side of the lower end of the first filter cleaning bucket. Support frames are provided at both ends of the upper side of the lower filter ring and the upper filter ring. The support frames are rotatably connected to the closed idle plate through a rotating connecting shaft.

[0008] Preferably, the upper filter ring has a first filter screen inside, and the outside of the first filter screen is bonded to the inside of the upper filter ring with glue. The lower filter ring has a second filter screen inside, and the outside of the second filter screen is bonded to the inside of the lower filter ring with glue.

[0009] Preferably, the mesh count of the first filter screen is smaller than that of the second filter screen.

[0010] Preferably, there are two closed idle plates, and a fixing plate is provided on one side of the lower end of each of the two closed idle plates. One side of each fixing plate is welded and fixed to the upper filter ring and the lower filter ring, respectively.

[0011] Preferably, each of the four suspension through holes has a first pull bar at its upper end. The upper ends of the four first pull bars are fixedly connected by a fixing ring. Two fixing bars are arranged crosswise inside the fixing ring, and the two fixing bars are welded to the fixing ring.

[0012] Preferably, one of the fixing bars has a connecting handle at its upper end, a hook at the upper outer end of the connecting handle, the hook being connected to the connecting handle slot, and a second pull bar at the upper end of the connecting handle.

[0013] This invention provides another technical solution: a method for using a borehole cleaning and slag removal bucket for bored piles, comprising the following steps:

[0014] S1: After the first and second filter cleaning barrels are connected by the connecting ring, they move longitudinally downward along the drilled pile and come into contact with the liquid. The liquid then contacts the closed idle plate on one side of the lower filter ring and the upper filter ring in sequence. After the closed idle plate comes into contact with the impact force, it rotates between the two support frames with the rotating connecting shaft as the center, so that the liquid enters the first and second filter cleaning barrels in sequence.

[0015] S2: After the liquid enters the device and stands for a period of time, the pulling structure pulls the hook through the second pulling bar. The hook pulls the fixing bar through the connecting handle. The fixing bar pulls the four first pulling bars that are evenly distributed in a ring at the lower end through the fixing ring. The four first pulling bars pull the first filter cleaning bucket and the second filter cleaning bucket through the suspension block, so that the whole device can move vertically upward, thereby driving the internal liquid to push the corresponding closed idle plate at the same time. The two closed idle plates move towards the fixed base plate at the same time and are supported by the fixed base plate. When the liquid flow is restricted, the liquid can only actively contact the first filter screen and the second filter screen.

[0016] S3: After being filtered through the second and first filter screens, the liquid remains at the top of the second and first filter screens, thus completing the cleaning process.

[0017] Preferably, the mesh size of the second filter screen is higher than that of the first filter screen, so that the liquid inside the second filter cleaning tank will be filtered again through the second filter screen after being filtered by the first filter screen. This divides the liquid inside the device into two areas and filters them separately. The filtered liquid is separately retained inside the second filter screen and the first filter screen, reducing the load-bearing capacity of the filter screen inside the device.

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

[0019] 1. This invention features closed idle plates at the lower ends of both the first and second filter cleaning tanks. Each closed idle plate has an upper filter ring on one side of its lower end, and rotating connecting shafts at both ends of the upper filter ring. These rotating connecting shafts are rotatably connected to the closed idle plates. During actual use and cleaning, when the device moves vertically downwards and comes into contact with the liquid, the impact of the object actively pushes the closed idle plates to rotate and unfold around the rotating connecting shafts. When the device is pulled vertically upwards for filtration, foreign objects inside the device are pushed by their own weight to rotate the closed idle plates towards the fixed base plate around the rotating connecting shafts, thus actively closing the device and leaving only the first and second filter screens for filtration. The device utilizes the weight and impact of the liquid itself during use, reducing the number of rotating parts inside the device to achieve a filtration effect. This avoids excessive rotating structures that could cause jamming inside the device, improving the overall lifespan of the device and preventing frequent maintenance that could affect its efficiency.

[0020] 2. This invention features a lower filter ring inside the first filter cleaning chamber, with a second filter screen inside the lower filter ring. An upper filter ring inside the second filter cleaning chamber contains a first filter screen. The second filter screen has a larger mesh size than the first filter screen. During actual filtration and cleaning, the first and second filter screens, with their respective mesh sizes, filter the material sequentially and retain it at their respective upper ends. This dual-layer progressive filtration reduces the pressure on a single filter screen and the weight of the foreign matter it needs to bear, thus extending its service life. Furthermore, the progressive filtration avoids the problem of a single filter screen needing to filter large foreign matter simultaneously, which would result in slower filtration efficiency. The progressive filtration method improves overall filtration efficiency. Attached Figure Description

[0021] Figure 1 This is a perspective view of the overall external structure of the device of the present invention;

[0022] Figure 2 For the present invention Figure 1 Enlarged view of a portion of region A in the middle;

[0023] Figure 3 This is a cross-sectional view of the internal structure of the first and second filter cleaning buckets of the present invention.

[0024] Figure 4 For the present invention Figure 3 Enlarged view of a portion of region B in the middle.

[0025] In the diagram: 1. First filter cleaning bucket; 2. Second filter cleaning bucket; 3. Connecting ring; 4. Suspension block; 5. First pull bar; 6. Fixing ring; 7. Fixing bar; 8. Connecting handle; 9. Hook; 10. Second pull bar; 11. Cleaning chamber; 12. Upper filter ring; 13. First filter screen; 14. Fixing base plate; 15. Closed idle plate; 16. Support frame; 17. Rotating connecting shaft; 18. Lower filter ring; 19. Second filter screen; 20. Suspension through hole. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] To address the issue of a slag removal device and method for bored piles disclosed in Chinese Patent CN105821880A, which requires the device's loop to slide outside the water inlet during the cleaning of internal foreign matter, and the filter support to actively unfold and retract, resulting in numerous movable structures and positions, repeated use within bored piles with abundant foreign matter can cause the entire device to jam, affecting normal operation. Please refer to [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides the following technical solution:

[0028] A borehole cleaning and slag removal bucket includes a second filter cleaning bucket 2. A connecting ring 3 is provided at the lower end of the second filter cleaning bucket 2. Four suspension blocks 4 are evenly distributed in a ring around the connecting ring 3. Each of the four suspension blocks 4 has a suspension through hole 20, which extends through and to the upper and lower ends of the suspension block 4. It also includes a first filter cleaning bucket 1, which is located at the lower end of the connecting ring 3. The first filter cleaning bucket 1, the connecting ring 3, and the second filter cleaning bucket 2 are welded together. Both the first and second filter cleaning buckets have a cleaning chamber 11 inside. A closed idle plate 15 is provided on one side of the lower end of the cleaning chamber 11. An upper filter ring 12 is provided on the other side of the lower end of the second filter cleaning bucket 2. A lower filter ring 18 is provided on the other side of the lower end of the first filter cleaning bucket 1. Support frames 16 are provided at both the front and rear ends of the upper side of the lower filter ring 18 and the upper filter ring 12. The support frames 16 and the closed idle plate 15 are connected by rotation. The connecting shaft 17 is rotatably connected, and two closed idle plates 15 are provided. Each of the two closed idle plates 15 has a fixed base plate 14 on one side of its lower end. One side of each fixed base plate 14 is welded and fixed to the upper filter ring 12 and the lower filter ring 18, respectively. The impact of an object will actively push the closed idle plate 15 to rotate and unfold around the rotating connecting shaft 17. When the device is pulled vertically upward and filters, the foreign objects inside the device will be pushed by their own gravity to rotate the closed idle plate 15 toward the fixed base plate 14 around the rotating connecting shaft 17. The rotation will actively close the device, leaving only the first filter screen 13 and the second filter screen 19 for filtration. During the use of the device, the weight and impact force of the liquid itself are used to reduce the number of rotating parts inside the device, thereby achieving a filtration effect. This avoids excessive rotating structures that may cause the device to jam, improves the overall service life of the device, and avoids frequent maintenance that may affect the efficiency of use.

[0029] To address the issue that existing devices relying on a single filter screen require the screen to withstand significant force at once, leading to screen damage, please refer to [the relevant documentation / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides the following technical solution:

[0030] The upper filter ring 12 has a first filter screen 13 inside, and the outside of the first filter screen 13 is glued to the inside of the upper filter ring 12. The lower filter ring 18 has a second filter screen 19 inside, and the outside of the second filter screen 19 is glued to the inside of the lower filter ring 18. The mesh size of the first filter screen 13 is smaller than that of the second filter screen 19. The first filter screen 13 and the second filter screen 19 with different mesh sizes filter the material sequentially and retain it at their respective upper ends. The double-layer progressive filtration can reduce the pressure on a single filter screen and the weight of the foreign objects it needs to bear, thus improving its service life. Furthermore, the progressive filtration can avoid the problem of a single filter screen having to filter large foreign objects at the same time, which would result in slow filtration efficiency. The progressive filtration can improve the filtration efficiency.

[0031] Each of the four suspension through holes 20 has a first pull bar 5 at its upper end. The upper ends of the four first pull bars 5 are fixedly connected by a fixing ring 6. Two fixing bars 7 are arranged crosswise inside the fixing ring 6. The two fixing bars 7 are welded and fixed to the fixing ring 6. A connecting handle 8 is provided at the upper end of one of the fixing bars 7. A hook 9 is provided at the upper end of the connecting handle 8. The hook 9 is connected to the connecting handle 8 in a slot. A second pull bar 10 is provided at the upper end of the connecting handle 8. The device can be moved vertically upward or downward by the suspension of the first pull bar 5 and the pulling of the second pull bar 10.

[0032] To further explain the embodiments of the present invention, a method for using a borehole cleaning and slag removal bucket for bored piles is also provided, including the following steps:

[0033] Step 1: When using the device and cleaning the inside of the bored pile, according to... Figure 1 , Figure 2 , Figure 3 and Figure 4 In order to reduce the moving structure of the device without restricting the filtration process, the first filter cleaning tank 1 and the second filter cleaning tank 2 are connected by the connecting ring 3 and move longitudinally downward along the drilled pile. After the longitudinal downward movement comes into contact with the liquid, the liquid will successively contact the closed idle plate 15 on one side of the lower filter ring 18 and the upper filter ring 12. After the closed idle plate 15 comes into contact with the impact force, it rotates between the two support frames 16 with the rotating connecting shaft 17 as the center. The rotation allows the liquid to enter the first filter cleaning tank 1 and the second filter cleaning tank 2 in sequence.

[0034] Step 2: After the liquid enters the device, it is allowed to stand for a period of time. Then, the pull structure pulls the hook 9 through the second pull bar 10. The hook 9 can pull the fixing bar 7 through the connecting handle 8. The fixing bar 7 pulls the four first pull bars 5 that are evenly distributed in a ring at the lower end through the fixing ring 6. The four first pull bars 5 can pull the first filter cleaning tank 1 and the second filter cleaning tank 2 through the suspension block 4, so that the whole device can move vertically upward. The vertical upward movement can drive the internal liquid to push the corresponding closed idle plate 15 at the same time. The two closed idle plates 15 move towards the fixed base plate 14 at the same time and are supported by the fixed base plate 14. When the liquid flow is restricted, the liquid can only actively contact the first filter screen 13 and the second filter screen 19.

[0035] Step 3: After being filtered by the second filter screen 19 and the first filter screen 13, the residue remains at the upper part of the second filter screen 19 and the first filter screen 13, thus completing the cleaning.

[0036] In the above embodiment, in order to reduce the load-bearing capacity of a single filter screen, a first filter screen 13 is installed inside the upper filter ring 12 and a second filter screen 19 is installed inside the lower filter ring 18. Since the mesh count of the second filter screen 19 is higher than that of the first filter screen 13, the liquid inside the second filter cleaning tank 2 will be filtered again by the second filter screen 19 after being filtered by the first filter screen 13. This divides the liquid inside the device into two areas and filters them separately. The filtered liquid is then separately retained inside the second filter screen 19 and the first filter screen 13, thereby reducing the load-bearing capacity of the filter screens inside the device.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method of using a borehole pile hole cleaning bailer, the method comprising: Its slag bucket includes second filter cleaning bucket (2), the lower end of second filter cleaning bucket (2) is provided with connecting ring (3), connecting ring (3) is uniformly distributed with four suspension blocks (4) in ring shape, the inside of four suspension blocks (4) is provided with suspension through hole (20), and suspension through hole (20) extends to the upper and lower ends of suspension block (4) and penetrates; ​ It also includes first filter cleaning bucket (1), which is arranged at the lower end of connecting ring (3), and first filter cleaning bucket (1), connecting ring (3) and second filter cleaning bucket (2) are welded and fixed, the inside of first filter cleaning bucket (1) and second filter cleaning bucket (2) is provided with cleaning cavity (11), one side of the inside of cleaning cavity (11) is provided with closed idle plate (15), the other side of the inside of second filter cleaning bucket (2) is provided with upper filter ring (12), the other side of the inside of first filter cleaning bucket (1) is provided with lower filter ring (18), the front and rear ends of one side of the upper end of lower filter ring (18) and upper filter ring (12) are provided with support frame (16), and support frame (16) is rotatably connected with closed idle plate (15) through rotating connecting shaft (17); The inside of upper filter ring (12) is provided with first filter screen (13), and the outside of first filter screen (13) is fixedly connected with the inside of upper filter ring (12) through glue, and the inside of lower filter ring (18) is provided with second filter screen (19), and the outside of second filter screen (19) is fixedly connected with the inside of lower filter ring (18) through glue; The lower end of closed idle plate (15) is provided with fixed bottom sheet (14), and one side of two fixed bottom sheets (14) is welded with upper filter ring (12) and lower filter ring (18) respectively; The upper end of the outside of four suspension through holes (20) is provided with first pulling strip (5), the upper end of four first pulling strips (5) is fixedly connected through fixed ring (6), and the inside of fixed ring (6) is provided with two fixed strips (7) intersectingly, and the fixed strips (7) are welded with fixed ring (6); The upper end of one of fixed strips (7) is provided with connecting handle (8), the upper end of the outside of connecting handle (8) is provided with pulling hook (9), the pulling hook (9) is connected with the clamping groove of connecting handle (8), and the upper end of connecting handle (8) is provided with second pulling strip (10); The use method comprises the following steps: S1: after first filter cleaning bucket (1) and second filter cleaning bucket (2) are connected through connecting ring (3), the liquid is sequentially contacted with lower filter ring (18) and upper filter ring (12) after moving vertically downward along the drilled pile, the closed idle plate (15) on one side of the lower end of upper filter ring (12) is contacted with the impact force, and the closed idle plate (15) is rotated between the two support frames (16) with rotating connecting shaft (17) as the center, so that the liquid sequentially enters first filter cleaning bucket (1) and second filter cleaning bucket (2); S2: After the liquid enters the device, the hook (9) is pulled by the second pull bar (10) through the pulling structure, the hook (9) pulls the fixed bar (7) through the connecting handle (8), the fixed bar (7) pulls the four first pull bars (5) evenly distributed at the lower end through the fixed ring (6), the four first pull bars (5) pull the first and second filter cleaning barrels (1) and (2) through the hanging blocks (4), so that the device as a whole moves longitudinally upward, thereby driving the internal liquid and pushing the corresponding closed idle plates (15), the two closed idle plates (15) move towards the fixed bottom sheet (14) and are supported by the fixed bottom sheet (14), so that the liquid can only actively contact the first and second filter screens (13) and (19) when flowing; S3: After the liquid is filtered by the second filter screen (19) and the first filter screen (13), it is retained at the upper end of the second filter screen (19) and the first filter screen (13), thereby completing the cleaning; The mesh number of the second filter screen (19) is higher than that of the first filter screen (13), so that the liquid in the second filter cleaning barrel (2) is filtered by the first filter screen (13) and then filtered again by the second filter screen (19), thereby dividing the liquid in the device into two areas and filtering separately, and the filtered liquid is retained in the second filter screen (19) and the first filter screen (13), thereby reducing the carrying capacity of the filter screens in the device.

2. The method of using a hole cleaning bailer for a drilled pile according to claim 1, wherein: The mesh number of the first filter screen (13) is less than that of the second filter screen (19).

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