Mud removal device of drill rod for CFG pile construction

Abstract

The embodiment of the utility model provides a desilting device of a drill rod for CFG pile construction. In one specific embodiment, the device comprises a driving mechanism and at least one longitudinally arranged rotating mechanism; the rotating mechanism comprises an inner ring body and an outer ring body; the inner ring body is arranged in the outer ring body and is rotationally connected with the outer ring body; at least one annular groove is formed in the outer wall of the inner ring body in the circumferential direction, and the annular groove is connected with the inner wall of the outer ring body in a sealed mode so that a water flow channel for fluid sealing can be formed between the annular groove and the inner wall of the outer ring body. A plurality of cleaning units are uniformly arranged in the inner ring body in the circumferential direction; according to the implementation mode, 360-degree three-dimensional flushing of the surface of the drill rod is achieved, and continuous cleaning operation can be synchronously carried out in the lifting or descending process of the drill rod. In addition, according to the embodiment, the corresponding number of rotating mechanisms can be selected according to working conditions, different cleaning units are arranged in the rotating mechanisms, and the cleaning flexibility is effectively improved.

Description

Technical Field

[0001] This disclosure relates to the field of CFG pile construction. More specifically, it relates to a desliming device for drill rods used in CFG pile construction. Background Technology

[0002] Currently, CFG piles (cement fly ash gravel piles) have become one of the core technologies for soft soil foundation treatment due to their high bearing capacity and fast construction efficiency. These piles are formed using a long spiral drill rod drilling and grouting process, and their quality directly depends on the verticality control of the drill rod and the hole wall formation during drilling. However, in actual construction, the strong shearing action between the spiral blades and the soil causes a large amount of drill cuttings to adhere to the drill rod surface and blade gaps when the drill rod penetrates the soil layer. During the drill rod lifting stage, the negative pressure effect inside the hole further exacerbates the hardening of drill cuttings on the drill rod surface. If this stubborn adhesion is not removed in time, it will cause multiple problems: First, the significant increase in the drill rod's self-weight leads to increased load on the power system, resulting in energy waste and accelerated equipment wear; second, the uneven distribution of the adhesions causes eccentric mass, which can cause drill rod swaying, easily leading to verticality deviations and directly affecting the coaxiality of the pile hole. Although traditional methods such as high-pressure water jet cleaning and manual scraping can partially alleviate the problem, they have drawbacks such as many blind spots in cleaning, inability to clean the drill rod in real time, and interruption of the construction rhythm during the cleaning process. Summary of the Invention

[0003] The purpose of this disclosure is to provide a desliming device that operates synchronously with drill pipe operations, has adaptive cleaning capabilities, and does not affect continuous construction, in order to solve at least one of the problems existing in the prior art.

[0004] To achieve the above objectives, the present disclosure adopts the following technical solution:

[0005] The first aspect of this disclosure provides a desliming device for drill rods used in CFG pile construction, comprising:

[0006] A drive mechanism and at least one longitudinally arranged rotary mechanism;

[0007] The rotating mechanism includes:

[0008] Inner ring body, and outer ring body;

[0009] The drive mechanism is detachably connected to the inner ring of the rotating mechanism at one end, so that the drive mechanism drives the inner ring to rotate about its central axis; the inner rings of two adjacent rotating mechanisms are detachably connected; the outer rings of two adjacent rotating mechanisms are detachably connected.

[0010] The inner ring body is disposed within the outer ring body and is rotatably connected to the outer ring body;

[0011] At least one annular groove is provided on the outer wall of the inner ring in the circumferential direction. The annular groove is sealed to the inner wall of the outer ring to form a fluid-sealed water flow channel between the annular groove and the inner wall of the outer ring.

[0012] Multiple cleaning units are evenly arranged around the inner ring body; the water inlet of each cleaning unit is connected to the water flow channel, and the water outlet of each cleaning unit points towards the central axis of the inner ring body.

[0013] The outer ring body has a water inlet hole that communicates with the water flow channel.

[0014] Furthermore, the outer wall of one end of the inner ring is provided with an external thread, and the inner wall of the other end is provided with an internal thread, the internal thread being threaded into the external thread of the inner ring of the adjacent rotating mechanism.

[0015] Furthermore, the drive mechanism includes a motor, a worm gear, and a worm;

[0016] The worm gear is connected to the worm drive;

[0017] A retaining ring is coaxially arranged on the worm gear;

[0018] One end of the fixed ring is fixedly connected to the worm gear, and the outer wall of the other end is provided with a first fixed thread for engaging with the internal thread of the adjacent inner ring body, or the inner wall is provided with a second fixed thread for engaging with the external thread of the adjacent inner ring body.

[0019] The drive end of the motor is fixedly connected to one end of the worm to drive the worm to rotate. The worm gear drives the worm wheel to rotate, thereby driving the inner ring of the adjacent rotating mechanism to rotate around its central axis through the fixed ring.

[0020] Furthermore, the rotating mechanism also includes at least two bearings coaxially arranged with the inner ring body, and the outer ring body is rotatably connected to the inner ring body through the bearings.

[0021] Furthermore, a silicon carbide ring is fixedly disposed on the outer wall of the inner ring and on both sides of the annular groove, and a graphite ring for cooperating with the silicon carbide ring is fixedly installed on the inner wall of the outer ring.

[0022] Furthermore, the cleaning unit includes a water spraying mechanism;

[0023] The water inlet of the water spraying mechanism is connected to the water flow channel.

[0024] Furthermore, the sludge removal device includes three longitudinally arranged rotating mechanisms;

[0025] The cleaning unit of the inner ring of the rotating mechanism located at one end and the cleaning unit of the inner ring of the rotating mechanism located in the middle further include mud removal brushes evenly arranged along the circumference of the corresponding inner ring.

[0026] The drill rod is coaxially inserted into the inner ring of the rotating mechanism at one end, which is equipped with a descaling brush, and passes through the inner ring of the rotating mechanism at the other end.

[0027] Furthermore, the mud-removing brush is selected from spring steel wire brushes or nylon brushes;

[0028] The mud-removing brush of the inner ring of the rotating mechanism located in the middle is selected from spring steel wire brushes;

[0029] The mud-removing brush of the inner ring of the rotating mechanism at one end is selected from nylon brushes.

[0030] Furthermore, flanges are provided at both ends of the outer ring body, and the outer ring bodies of two adjacent rotating mechanisms can be detached and connected through the flanges.

[0031] Furthermore, the inner wall of the water inlet hole is provided with a sealing thread for cooperating with an external water supply pipe.

[0032] The beneficial effects of this disclosure are as follows:

[0033] In this disclosure, the inner and outer rings of the rotating mechanism are rotated relative to each other under the drive of the drive unit. This allows the cleaning units on the inner ring to dynamically cover the drill rod axis. The synergistic effect of multiple cleaning units evenly distributed around the circumference of the inner ring, the annular water flow channel, and the water inlet hole achieves 360° three-dimensional scouring of the drill rod surface. This effectively eliminates cleaning blind spots such as blade gaps and threaded connections that exist in traditional water gun flushing, and has a particularly strong peeling effect on the caking drill cuttings adhering to the root of the spiral blades.

[0034] This invention employs a follow-up cleaning structure, enabling continuous cleaning operations to be performed simultaneously during drill pipe lifting or lowering. Compared to traditional shutdown cleaning methods, this avoids construction interruptions, significantly improves work efficiency, and prevents drill cuttings from secondary caking while stationary, achieving an active protection mechanism of immediate removal upon generation.

[0035] This disclosure employs a detachable rotating mechanism assembly method, allowing for flexible expansion of the number of cleaning sections based on the drill pipe length. The detachable design improves on-site assembly efficiency and shortens assembly time. Simultaneously, the modular design enables disassembly and transportation, facilitating transport and making it particularly suitable for construction needs in confined spaces such as mountainous areas and subway stations. Furthermore, in this embodiment, the appropriate number of rotating mechanisms can be selected according to the working conditions, and different cleaning units can be set in each rotating mechanism, effectively enhancing the flexibility of the cleaning process. Attached Figure Description

[0036] The specific embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0037] Figure 1 A schematic diagram of the sludge removal device of this disclosure after installation is shown.

[0038] Figure 2 A schematic diagram of the sludge removal device of this disclosure before installation is shown.

[0039] Figure 3 A schematic diagram of the rotating mechanism of this disclosure is shown.

[0040] Figure 4 A schematic diagram of the structure of a first embodiment of the drive mechanism of this disclosure is shown.

[0041] Figure 5 A schematic diagram of the structure of a second embodiment of the drive mechanism of this disclosure is shown.

[0042] Figure 6 The rear view of the sludge removal device of this disclosure after installation is shown.

[0043] Figure 7 The sludge removal device of this disclosure is shown in Figure 6 A cross-sectional view at point AA.

[0044] Figure 8 The sludge removal device of this disclosure is shown in Figure 7 Enlarged view of point B.

[0045] Figure 9 A bottom view of the rotating mechanism of this disclosure without the mud brush installed is shown.

[0046] Figure 10 A bottom view of the rotating mechanism with a spring wire brush installed according to this disclosure is shown.

[0047] Figure 11 A bottom view of the rotating mechanism with a nylon brush mounted in this disclosure is shown.

[0048] Explanation of reference numerals in the attached figures

[0049] 1. Drill pipe;

[0050] 2. Drive mechanism; 21. Worm gear; 22. Worm; 23. Retaining ring; 24. Second fixing thread; 25. First fixing thread;

[0051] 3. Rotating mechanism; 311. Outer ring body; 312. Water inlet hole; 313. Flange; 314. Graphite ring; 315. Sealing thread; 321. Inner ring body; 322. Annular groove; 323. External thread; 324. Internal thread; 325. Silicon carbide ring; 33. Bearing;

[0052] 4. Cleaning unit; 41. Water spraying mechanism; 42. Mud removal brush; 421. Spring steel wire brush; 422. Nylon brush. Detailed Implementation

[0053] To more clearly illustrate this disclosure, the following description, in conjunction with embodiments and accompanying drawings, provides further insight. Similar components in the drawings are indicated by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of this disclosure.

[0054] like Figure 1 and Figure 2 As shown, this utility model discloses a mud removal device for drill rods used in CFG pile construction, comprising:

[0055] Drive mechanism 2 and at least one longitudinally arranged rotating mechanism 3;

[0056] Rotating mechanism 3 includes:

[0057] Inner ring 321 and outer ring 311;

[0058] The drive mechanism 2 is detachably connected to the inner ring 321 of the rotating mechanism 3 at one end, so that the drive mechanism 2 drives the inner ring 321 to rotate around its central axis; the inner rings 321 of two adjacent rotating mechanisms 3 are detachably connected; the outer rings 311 of two adjacent rotating mechanisms 3 are detachably connected.

[0059] The inner ring body 321 is disposed inside the outer ring body 311 and is rotatably connected to the outer ring body 311;

[0060] At least one annular groove 322 is provided circumferentially on the outer wall of the inner ring body 321. The annular groove 322 is sealed to the inner wall of the outer ring body 311 to form a fluid-sealed water flow channel between the annular groove 322 and the inner wall of the outer ring body 311.

[0061] Multiple cleaning units 4 are evenly arranged in the inner circumference of the inner ring body 321; the water inlet of the cleaning unit 4 is connected to the water flow channel, and the water outlet of the water outlet points to the central axis of the inner ring body 321.

[0062] The outer ring body 311 has a water inlet hole 312 that communicates with the water flow channel.

[0063] In this disclosure, the inner and outer rings of the rotating mechanism 3 are rotated relative to each other under the drive of the drive unit. This allows the cleaning units 4 on the inner ring to dynamically cover the drill rod 1 along its axis. The multiple cleaning units 4 evenly distributed around the inner ring 321, along with the annular water flow channel and the water inlet hole 312, work together to achieve 360° three-dimensional rinsing of the drill rod 1 surface. This effectively eliminates cleaning blind spots such as blade gaps and threaded connections that exist in traditional water gun washing, and has a particularly strong peeling effect on the hardened drill cuttings adhering to the root of the spiral blades.

[0064] This disclosure employs a follow-up cleaning structure, which can perform continuous cleaning operations simultaneously during the lifting or lowering of drill pipe 1. Compared with traditional shutdown cleaning methods, this avoids construction interruptions, greatly improves work efficiency, and prevents drill cuttings from secondary caking while stationary, achieving an active protection mechanism of cleaning up cuttings as soon as they are generated.

[0065] This disclosure employs a detachable connection (such as...). Figure 2 The combination of rotating mechanisms 3 allows for flexible expansion of the number of cleaning sections based on the length of the drill pipe 1. The detachable design improves on-site assembly efficiency and shortens assembly time. Simultaneously, the modular design allows for disassembly and transportation, facilitating transport and making it particularly suitable for construction needs in confined spaces such as mountainous areas and subway stations. Furthermore, in this embodiment, the appropriate number of rotating mechanisms 3 can be selected according to the working conditions, and different cleaning units 4 can be set in each rotating mechanism 3, effectively improving the flexibility of the cleaning process.

[0066] In one specific embodiment, the water pressure in the water flow channel is between 8 MPa and 25 MPa; the water flow channel forming a fluid seal between the annular groove 322 and the inner wall of the outer ring 311 can withstand a water pressure of at least 30 MPa.

[0067] In one possible implementation, such as Figure 3 As shown, the outer wall of one end of the inner ring 321 is provided with an external thread 323, and the inner wall of the other end is provided with an internal thread 324. The internal thread 324 is threadedly engaged with the external thread 323 of the inner ring 321 of the adjacent rotating mechanism 3.

[0068] In this embodiment, the external threads 323 and internal threads 324 at both ends of the inner ring 321 form a standardized interface, and the adjacent rotating mechanisms 3 are directly screwed together by the threads to achieve modular rapid assembly.

[0069] In one possible implementation, such as Figure 4 and Figure 5 As shown, the drive mechanism 2 includes a motor (not shown in the figure), a worm gear 21, and a worm 22;

[0070] Worm gear 21 is connected to worm 22 for transmission;

[0071] A retaining ring 23 is coaxially mounted on the worm gear 21;

[0072] One end of the fixed ring 23 is fixedly connected to the worm gear 21, and the outer wall of the other end is provided with a first fixed thread 25 for engaging with the internal thread 324 of the adjacent inner ring body 321, or the inner wall is provided with a second fixed thread 24 for engaging with the external thread 323 of the adjacent inner ring body 321.

[0073] The drive end of the motor is fixedly connected to one end of the worm to drive the worm to rotate and drive the worm wheel 21 to rotate through the worm gear transmission, so as to drive the inner ring 321 of the adjacent rotating mechanism 3 to rotate around its central axis through the fixed ring 23.

[0074] It should be noted that, as Figure 1 As shown, the drive mechanism 2 can be fixed below at least one longitudinally arranged rotating mechanism 3, in which case the drive mechanism 2 adopts... Figure 4 The structure is as follows; of course, the drive mechanism 2 can also be arranged above at least one longitudinally arranged rotating mechanism 3, then its structure is as follows. Figure 5 As shown.

[0075] When the drive mechanism 2 is fixed below at least one longitudinally arranged rotating mechanism 3, the low center of gravity design of the entire device reduces the swaying of the entire desliming device and the swaying amplitude of the drill rod 1 during cleaning. However, this design requires enhanced bottom sealing to prevent mud and water from entering the worm gear 22 transmission system.

[0076] On the other hand, when the drive mechanism 2 is fixed above at least one longitudinally arranged rotating mechanism 3, the motor, worm 22, worm wheel 21, etc. do not need to be sealed, and can even be exposed to the clean area (when the drill pipe is in the lifting stage and the drive mechanism 2 is above, the top of the rotating mechanism is the clean area). The sealing requirements are low and the rotating mechanism 3 does not need to be disassembled during maintenance. However, in this method, the center of gravity of the drive mechanism 2 is high, which will increase the swing of the entire desliming device and the swing amplitude of the drill pipe 1 during the cleaning process.

[0077] In one possible implementation, such as Figure 3 As shown, the rotating mechanism 3 also includes at least two bearings 33 coaxially arranged with the inner ring body 321, and the outer ring body 311 is rotatably connected to the inner ring body 321 through the bearings 33.

[0078] In this disclosure, the outer ring 311 is rotatably connected to the inner ring 321 by at least two coaxially arranged bearings 33. Preferably, this embodiment uses high-precision ball bearings 33 with a friction coefficient of less than 0.0015, which greatly reduces the rotational resistance of the inner ring 321 and significantly improves the power transmission efficiency.

[0079] In a preferred embodiment, the two bearings 33 are symmetrically distributed at both ends of the inner ring 321, forming a double support structure with stronger support capacity.

[0080] In one possible implementation, such as Figure 6 , Figure 7 as well as Figure 8 A silicon carbide ring 325 is fixedly disposed on the outer wall of the inner ring body 321 and on both sides of the annular groove 322. A graphite ring 314 for cooperating with the silicon carbide ring 325 is fixedly installed on the inner wall of the outer ring body 311. Specifically, in this embodiment, the flexible graphite ring 314, through self-lubrication and elastic deformation compensation, precisely fits with the ultra-hard and wear-resistant silicon carbide ring 325, forming a dynamic sealing interface during rotation, and synergistically achieving a reliable seal with high temperature resistance and low friction.

[0081] In this embodiment, the silicon carbide ring 325 (Mohs hardness 9.5) provides rigid support, and the flexible graphite ring 314 compensates for the micro gaps caused by thermal expansion and mechanical vibration through elastic deformation, achieving zero leakage sealing under high pressure water flow of 5MPa-25MPa. Compared with traditional rubber seals, the sealing capacity is greatly improved.

[0082] Graphite's self-lubricating properties (friction coefficient ≤ 0.1) significantly reduce rotational resistance while avoiding lubricant contamination, making it particularly suitable for long-term continuous operation.

[0083] The combination of silicon carbide and graphite can withstand extreme temperatures of -50℃ to 400℃. The frictional heat generated by the high-speed rotation of the rotating mechanism 3 will not cause seal failure. The wear resistance of silicon carbide makes the wear rate of the sealing interface lower and the service life longer.

[0084] Furthermore, it should be noted that the number of rotating mechanisms 3 in this embodiment is not limited to three. The rotating mechanism 3 in this disclosure can be used alone in conjunction with the driving mechanism 2, or two rotating mechanisms 3 can be used in conjunction with the driving mechanism 2. In this embodiment, the number of rotating mechanisms 3 is not limited.

[0085] In one possible implementation, such as Figure 9 As shown, the cleaning unit 4 includes a water spraying mechanism 41;

[0086] The water inlet of the water spray mechanism 41 is connected to the water flow channel.

[0087] It should be noted that the water spraying mechanism 41 can select different nozzles according to the local soil conditions, and this disclosure does not impose any restrictions on this.

[0088] In one possible implementation, the sludge removal device includes three longitudinally arranged rotating mechanisms 3;

[0089] The cleaning unit 4 of the inner ring 321 of the rotating mechanism 3 at one end and the cleaning unit 4 of the inner ring 321 of the rotating mechanism 3 in the middle also include mud removal brushes 42 that are uniformly arranged around the corresponding inner ring 321.

[0090] The drill rod 1 is coaxially inserted into the inner ring 321 of the rotating mechanism 3 at one end where the mud brush 42 is located, and passes through the inner ring 321 of the rotating mechanism 3 in the middle and exits from the inner ring 321 of the rotating mechanism 3 at the other end.

[0091] In one possible implementation, the mud brush 42 is selected from the spring steel wire brush 421 or the nylon brush 422;

[0092] like Figure 11 The mud-removing brush 42 of the inner ring 321 of the rotating mechanism 3 in the middle is selected from the spring steel wire brush 421;

[0093] like Figure 10 The mud-removing brush 42 of the inner ring 321 of the rotating mechanism 3 at one end is selected from a nylon brush 422.

[0094] In this embodiment, the spring steel wire brush 421 is made of 316L nitrided stainless steel wire with a diameter of 0.3mm, a Rockwell hardness of 55±1HRC, a helical pitch of 2.5mm, and a free length of 18mm, forming a strength of 80-100N / cm. 2 The elastic contact pressure is used for initial scraping; the nylon brush 422 is made of PA612 + 30% glass fiber reinforced material, with a 0.8mm bristle diameter, Shore hardness of 68±2D, 25mm effective length, and 120 bristles / cm. 2 Staggered hair density, combined with 50-60 N / cm 2 The flexible contact pressure is used to perform fine cleaning.

[0095] In one possible implementation, flanges 313 are provided at both ends of the outer ring body 311, and the outer ring bodies 311 of two adjacent rotating mechanisms 3 can be detachably connected through the flanges 313. The flanges 313 are bolted together to form a continuous rigid support system with higher bending stiffness than traditional threads, thus avoiding micro-displacement between the inner ring body 321 and the outer ring body 311.

[0096] In one possible implementation, the inner wall of the water inlet 312 is provided with a sealing thread 315 for mating with an external water supply pipe. (Ref) Figure 7 ).

[0097] It should be noted that, in Figure 7 In the embodiments, the inner ring of each rotating mechanism 3 is provided with the same cleaning unit 4 (the cleaning unit 4 uses a different cleaning method than the one used in the embodiments). Figure 9 , Figure 10 as well as Figure 11The flexibility of the configuration of this disclosure is further illustrated by employing cleaning units 4 with different configurations.

[0098] The outer surface of the end of the external water supply pipe can also be threaded to engage with the thread on the inner wall of the water inlet hole 312, so as to achieve a sealed connection between the external water supply pipe and the water inlet hole 312.

[0099] Reference Figure 1 The working principle of this disclosure for the three longitudinally arranged rotating mechanisms 3 is as follows:

[0100] The drill rod 1 is coaxially inserted into the inner ring 321 of the rotating mechanism 3, which is equipped with a desliming brush 42, at one end. It then passes through the inner ring 321 of the rotating mechanism 3 at the other end and exits, thus commencing operation. When the drill rod 1 enters the lifting stage, the following operations are performed:

[0101] The motor is turned on, and the worm 22 is driven to rotate through the drive end of the motor. The worm 22 drives the worm wheel 21 to rotate, so as to drive the inner ring 321 of the adjacent rotating mechanism 3 to rotate around its central axis through the fixed ring 23. Since the inner rings 321 are fixedly connected by threaded fit, the inner rings 321 of other rotating mechanisms 3 rotate synchronously.

[0102] An external high-pressure water source (which can be pumped from a water tank, but this embodiment does not impose any restrictions) flows into the water inlet 312 through a water supply pipe. The water flows through a water flow channel to the water spraying mechanism 41, and a high-pressure water jet is sprayed onto the drill rod 1 through the water spraying mechanism 41.

[0103] First, the soil brought out by drill rod 1 is first treated as follows: Figure 9 The water spray mechanism 41, which is located at one end of the rotating mechanism 3 without the mud brush 42 shown, performs pre-rinsing to remove mud with low surface viscosity and increase mud moisture for subsequent cleaning. Preferably, in this embodiment, the water outlet direction of the water spray mechanism 41 is directed towards the central axis of the inner ring and perpendicular to the center axis of gravity of the inner ring. The water energy of vertical rinsing is more concentrated, which can wash away the mud on the surface of the drill rod 1 to the greatest extent. It is suitable for pre-rinsing.

[0104] Subsequently, as Figure 10 As shown, the soil on the surface of drill pipe 1 is cleaned by a spring steel wire brush 421 rotating around the central axis of the inner ring and a water spraying mechanism 41. The water outlet direction of the water spraying mechanism 41 is directed towards the central axis and forms an angle of 30°-60° with the central axis. When the water spraying mechanism 41 is inclined to enter, the tangential component of the water flow penetrates into the gap between the spiral blades, resulting in a high coverage of the cleaning blind area and thus a more thorough cleaning. On this basis, the spring steel wire also has a strong cleaning ability. The two work together to further clean the stubborn soil on the surface of drill pipe 1.

[0105] Finally, as Figure 11 As shown, the mud on the surface of the drill rod 1 is cleaned by a nylon brush 422 rotating around the central axis of the inner ring and a water spraying mechanism 41. The water spraying mechanism 41 and the nylon brush 422 work together to clean the mud residue on the drill rod 1.

[0106] This embodiment employs a three-stage design: vertical rinsing (pre-cleaning), inclined water spray and wire brush (main cleaning), and nylon brush and water spray (final cleaning), covering the full particle size range from loose soil to stubborn compacted material.

[0107] In addition, this embodiment adopts a segmented load-sharing design (vertical impact, mechanical scraping, and flexible polishing), which effectively reduces equipment wear rate and extends service life.

[0108] It should be noted that the sludge removal device in this disclosure needs to be fixed to the outer ring body by a bracket or other mechanism, and a height adjustment mechanism can also be set to set it at a preset height. This disclosure does not limit this.

[0109] In the description of this disclosure, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure 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, and therefore should not be construed as a limitation of this disclosure. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. For those skilled in the art, the specific meaning of the above terms in this disclosure can be understood according to the specific circumstances.

[0110] It should also be noted that, in the description of this disclosure, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0111] Obviously, the above embodiments of this disclosure are merely examples for clearly illustrating this disclosure, and are not intended to limit the implementation of this disclosure. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all implementation methods here. Any obvious variations or modifications derived from the technical solutions of this disclosure are still within the protection scope of this disclosure.

Claims

1. A desliming device for drill rods used in CFG pile construction, characterized in that, include: A drive mechanism (2) and at least one longitudinally arranged rotating mechanism (3); The rotating mechanism (3) includes Inner ring (321) and outer ring (311); The driving mechanism (2) is detachably connected to the inner ring (321) of the rotating mechanism (3) at one end, so that the driving mechanism (2) drives the inner ring (321) to rotate about its central axis; the inner rings (321) of two adjacent rotating mechanisms (3) are detachably connected; the outer rings (311) of two adjacent rotating mechanisms (3) are detachably connected. The inner ring (321) is disposed inside the outer ring (311) and is rotatably connected to the outer ring (311); At least one annular groove (322) is provided circumferentially on the outer wall of the inner ring body (321). The annular groove (322) is sealed to the inner wall of the outer ring body (311) to form a fluid-sealed water flow channel between the annular groove (322) and the inner wall of the outer ring body (311). Multiple cleaning units (4) are uniformly arranged in the inner circumference of the inner ring body (321); the water inlet of the cleaning unit (4) is connected to the water flow channel, and the water outlet of the water outlet points to the central axis of the inner ring body (321). The outer ring (311) is provided with a water inlet (312) that communicates with the water flow channel.

2. The desliming device for drill rods used in CFG pile construction according to claim 1, characterized in that, The outer wall of one end of the inner ring (321) is provided with an external thread (323), and the inner wall of the other end is provided with an internal thread (324). The internal thread (324) is threadedly engaged with the external thread (323) of the inner ring (321) of the adjacent rotating mechanism (3).

3. The desliming device for drill rods used in CFG pile construction according to claim 2, characterized in that, The drive mechanism (2) includes a motor, a worm gear (21), and a worm (22); The worm gear (21) is connected to the worm (22) in a transmission connection; A retaining ring (23) is coaxially arranged on the worm gear (21); One end of the fixed ring (23) is fixedly connected to the worm gear (21), and the outer wall of the other end is provided with a first fixed thread (25) for engaging with the internal thread (324) of the adjacent inner ring body (321), or the inner wall is provided with a second fixed thread (24) for engaging with the external thread (323) of the adjacent inner ring body (321). The drive end of the motor is fixedly connected to one end of the worm (22) to drive the worm (22) to rotate, and drives the worm wheel (21) to rotate through the worm (22) to drive the inner ring (321) of the adjacent rotating mechanism (3) to rotate around its central axis through the fixed ring (23).

4. The desliming device for drill rods used in CFG pile construction according to claim 1, characterized in that, The rotating mechanism (3) further includes at least two bearings (33) coaxially arranged with the inner ring body (321), and the outer ring body (311) is rotatably connected to the inner ring body (321) through the bearings (33).

5. The desliming device for drill rods used in CFG pile construction according to claim 1, characterized in that, A silicon carbide ring (325) is fixedly disposed on the outer wall of the inner ring body (321) and on both sides of the annular groove (322), and a graphite ring (314) for cooperating with the silicon carbide ring (325) is fixedly installed on the inner wall of the outer ring body (311).

6. The desliming device for drill rods used in CFG pile construction according to claim 1, characterized in that, The cleaning unit (4) includes a water spraying mechanism (41); The water inlet of the water spraying mechanism (41) is connected to the water flow channel.

7. The desliming device for drill rods used in CFG pile construction according to claim 6, characterized in that, The sludge removal device includes three longitudinally arranged rotating mechanisms (3); The cleaning unit (4) of the inner ring (321) of the rotating mechanism (3) at one end and the cleaning unit (4) of the inner ring (321) of the rotating mechanism (3) in the middle also include mud removal brushes (42) uniformly arranged along the circumference of the corresponding inner ring (321). The drill rod (1) is coaxially inserted into the inner ring (321) of the rotating mechanism (3) at one end where the mud brush (42) is located, and passes through the inner ring (321) of the rotating mechanism (3) at the other end through the inner ring (321) of the rotating mechanism (3) in the middle.

8. The desliming device for drill rods used in CFG pile construction according to claim 7, characterized in that, The mud removal brush (42) is selected from a spring steel wire brush (421) or a nylon brush (422); The mud removal brush (42) of the inner ring (321) of the rotating mechanism (3) located in the middle is selected from the spring steel wire brush (421); The mud-removing brush (42) of the inner ring (321) of the rotating mechanism (3) at one end is selected from a nylon brush (422).

9. A desliming device for drill rods used in CFG pile construction according to claim 1, characterized in that, The outer ring body (311) is provided with flanges (313) at both ends, and the outer ring bodies (311) of two adjacent rotating mechanisms (3) can be detached and connected through the flanges (313).

10. A desliming device for drill rods used in CFG pile construction according to claim 1, characterized in that, The inner wall of the water inlet hole (312) is provided with a sealing thread (315) for cooperating with an external water supply pipe.

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