A cleaning device suitable for a rotary drilling pile

Abstract

The application belongs to the technical field of cleaning devices, and particularly relates to a cleaning device suitable for a rotary excavating reamer bit of a cast-in-place pile. The structure of the cleaning device comprises a water inlet pipe, a water receiving tank unit provided with the water inlet pipe, a water filtering fixed plate unit arranged in the water receiving tank unit, a movable water filtering plate unit arranged on the water filtering fixed plate unit and used for fixing the reamer bit, a movable cover body unit provided on the water receiving tank unit and covering the water filtering fixed plate unit and the movable water filtering plate unit, and a vertical driving rod arranged on the movable water filtering plate unit, penetrating through the movable cover body unit upwards, and used for rotating the movable water filtering plate unit.

Description

Technical Field

[0001] This application belongs to the technical field of cleaning devices, and in particular relates to a cleaning device suitable for rotary drilling reamers for cast-in-place piles. Background Technology

[0002] Cast-in-place piles refer to piles constructed by first drilling holes and then pouring concrete or reinforced concrete into them, unlike precast piles. In the aforementioned construction method, concrete needs to be prepared on-site. Compared to precast piles, its main advantages are: eliminating the pile driving step and generating less vibration and noise during construction.

[0003] On the other hand, the main function of the aforementioned rotary drilling reamer is to enlarge the bottom of the already excavated hole to increase the bearing area of ​​the pile foundation, thereby significantly improving the bearing capacity of the pile foundation, especially the pull-out and compressive bearing capacity.

[0004] Correspondingly, compared with ordinary drill bits, rotary drilling reamers have a relatively complex structure, including at least one movable, deployable part, in order to achieve the basic function of first inserting into the hole and then rotary drilling to enlarge the bottom.

[0005] For example, Chinese utility model patent with authorization announcement number CN213162105U and authorization announcement date of May 11, 2021 discloses a drill bit soil removal and cleaning device for graded hole expansion construction of large-diameter concrete cast-in-place piles. Its main structural components include: box body, isolation plate, chute, cleaning mechanism, cleaning shed, water tank, water pump, nozzle, conveying mechanism, fixing plate, placement frame, telescopic rod, and fixed slider.

[0006] The advantages of the drill bit soil removal and cleaning equipment in this utility model patent are as follows: the water used for rinsing can be collected in the water storage area through the through holes opened on the upper surface of the fixed plate and the hollow structure of the fixed plate itself, thus avoiding a large waste of water resources.

[0007] However, in actual use, this drill bit soil removal and cleaning equipment still has at least the following impractical problems, specifically: First, the curtain structure on its cleaning mechanism, although it can block water, is prone to hooking and pulling the drill bit, especially the relatively protruding unfoldable part on the drill bit, which can eventually cause the drill bit to fall off or the curtain to break. Secondly, its cleaning mechanism and placement rack are fixed, making it difficult to provide a relatively comprehensive cleaning effect for the drill bit. Utility Model Content

[0008] This application provides a cleaning device for rotary drilling reamers used in cast-in-place piles. The technical problem it aims to solve is how to make the cleaning device more safe and comprehensive in cleaning the rotary drilling reamers used in cast-in-place piles.

[0009] The technical solution adopted by this application to solve the above problems is: a cleaning device suitable for rotary drilling reaming bit of cast-in-place pile, the structure including a water inlet pipe, a water receiving tank unit with the water inlet pipe inserted, a filter fixing plate unit set in the water receiving tank unit, a movable filter plate unit snapped on the filter fixing plate unit and used to fix the reaming bit, a perforated movable cover unit set on the water receiving tank unit and covering the filter fixing plate unit and the movable filter plate unit, and a driving vertical rod set on the movable filter plate unit, passing upward through the perforated movable cover unit and used to rotate the movable filter plate unit.

[0010] A further preferred technical solution is that the water receiving tank unit includes a rectangular tank, a transverse protrusion plate disposed on the inner side of the rectangular tank and used to support the water filter fixing plate unit and the perforated movable cover unit, and an inlet pipe mounting hole disposed on the side plate of the rectangular tank and located below the transverse protrusion plate.

[0011] A further preferred technical solution is that the filter fixing plate unit includes a rectangular perforated plate disposed on the upper surface of the transverse protrusion plate, a circular hole disposed on the rectangular perforated plate for inserting and installing the movable filter plate unit, and a through port disposed on the rectangular perforated plate for passing upward through the water inlet pipe.

[0012] A further preferred technical solution is that the movable filter plate unit includes a circular perforated plate disposed on the circular hole, and a driving cylinder disposed on the circular perforated plate and used for inserting and installing the driving vertical rod.

[0013] A further preferred technical solution is that the perforated movable cover unit includes a rectangular cover disposed on the upper surface of the transverse protrusion plate and fitted with the water filter fixing plate unit, and a fan-shaped annular opening disposed on the top plate of the rectangular cover and used to pass upward through the driving vertical rod.

[0014] A further preferred technical solution is that the water receiving tank unit further includes a vertical protrusion block disposed on the upper surface of the transverse protrusion plate and used to transversely limit the water filter fixing plate unit.

[0015] A further preferred technical solution is that the filter fixing plate unit further includes a protruding ring disposed on the circular hole and used to support the movable filter plate unit, and ball bearings disposed on the upper surface of the protruding ring.

[0016] A further preferred technical solution is that the movable filter plate unit further includes a vertical rod and a vertical cylinder respectively disposed on the upper and lower surfaces of the circular perforated plate and used for inserting and sleeved with the reaming drill bit, and the driving cylinder is provided on both the upper and lower surfaces of the circular perforated plate.

[0017] A further preferred technical solution is that the perforated movable cover unit further includes an arc-shaped vertical plate disposed on the upper surface of the rectangular cover, and a fan-shaped annular top plate disposed on the arc-shaped vertical plate and used to cover the fan-shaped annular opening.

[0018] A further preferred technical solution is that the water receiving tank unit further includes a water inlet disposed on the side plate of the rectangular tank and located below the transverse protrusion plate.

[0019] The beneficial effects of this application include at least the following five points.

[0020] First, in this cleaning device, the combination of the use of the perforated movable cover unit, the rotatable feature of the rotatable filter plate unit, and the driving rotation effect of the vertical rod ensures that the cleaning operation of the reaming drill bit is both safe and comprehensive, and the perforated movable cover unit is less likely to bump into the reaming drill bit.

[0021] Secondly, the reaming drill bit on the rotatable filter plate unit has both vertical support stability and convenient circumferential movement. It can be driven by a motor or manually by connecting it to the vertical rod.

[0022] Third, when water splashes during cleaning, the perforated movable cover unit can effectively block it, preventing water from flowing out and ensuring the cleanliness of the operating environment.

[0023] Fourth, all existing common internal and external thread reaming drill bits can be fully vertically fixed on the rotatable filter plate unit, ultimately improving the comprehensiveness and practicality of the cleaning operation.

[0024] Fifth, the upper layer of water in the water receiving tank unit can be reused, while the lower layer of muddy water mixture has the advantage of being easy to extract. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this application.

[0026] Figure 2 This is a structural schematic diagram of the water receiving tank unit in this application.

[0027] Figure 3 This is a schematic diagram showing the position and structure of the rotatable filter plate unit in this application.

[0028] Figure 4 This is a structural schematic diagram of the water filter fixing plate unit in this application.

[0029] Figure 5 This is a schematic diagram showing the positions of the vertical rod and the vertical cylinder in this application.

[0030] Figure 6 This is a schematic diagram showing the location of the vertical protrusion in this application.

[0031] Figure 7 This is a schematic diagram of the first structure of a reaming drill bit in the prior art.

[0032] Figure 8 This is a schematic diagram of the second structure of a reaming drill bit in the prior art.

[0033] Figure 9 This is a schematic diagram showing the location and shape of the water inlet pipe in this application.

[0034] Figure 10 This is a schematic diagram of the perforated movable cover unit in this application.

[0035] The meanings of the markings in the diagram are as follows.

[0036] a; reaming drill bit; Water inlet pipe 11, nozzle 12; Water receiving tank unit 1, water filter fixing plate unit 2, rotatable water filter plate unit 3, perforated movable cover unit 4, driving vertical rod 5; 101 Rectangular box body, 102 Horizontal protrusion plate, 103 Water inlet pipe mounting hole, 104 Vertical protrusion block, 105 Water inlet; Rectangular perforated plate 201, circular hole 202, through port 203, protruding ring 204, ball bearing 205; Circular perforated plate 301, driving cylinder 302, vertical rod 303, vertical cylinder 304; 401 Rectangular cover, 402 Fan-shaped annular opening, 403 Arc-shaped vertical plate, 404 Fan-shaped annular top plate, 405 Motor mounting hole, 406 Lifting port. Detailed Implementation

[0037] The following description is merely a preferred embodiment of this application and is not intended to limit the scope of this application.

[0038] like Figures 1-10As shown, a cleaning device suitable for rotary drilling reaming bit of cast-in-place piles includes a water inlet pipe 11, a water receiving tank unit 1 with the water inlet pipe 11 inserted into it, a filter fixing plate unit 2 disposed in the water receiving tank unit 1, a rotatable filter plate unit 3 engaged on the filter fixing plate unit 2 and used to place the reaming bit a, a perforated movable cover unit 4 disposed on the water receiving tank unit 1 and covering the filter fixing plate unit 2 and the rotatable filter plate unit 3, and a driving vertical rod 5 disposed on the rotatable filter plate unit 3, passing upward through the perforated movable cover unit 4, and used to rotate the rotatable filter plate unit 3.

[0039] In this embodiment, the main body of the cleaning device is made of galvanized steel, which provides sufficient support strength and a certain degree of rust prevention.

[0040] Among them, "reamer bit a" refers to a relatively small type of rotary reamer bit, with a diameter of, for example, 200-600mm and a weight of 10-100kg. For example, the IADC537 drill bit manufactured by Hejian Dingtong Drill Bit Manufacturing Co., Ltd., with a diameter of 400mm and a weight of 20kg, is suitable for this cleaning device.

[0041] Large reaming drill bits, such as those weighing 200 kg to 1 ton, are not suitable for this cleaning device. These large drill bits are typically cleaned by in-situ flushing. In this case, the safety of the flushing operation is paramount, and water recycling is generally not a concern. Existing common drill bit cleaning devices are generally unable or unsuitable to support such large weights.

[0042] On the other hand, the filter fixing plate unit 2 is located at a relatively upper position within the water receiving tank unit 1, and the area below the filter fixing plate unit 2 is used to temporarily store the mud-water mixture. The filter fixing plate unit 2 supports and laterally limits the rotatable filter plate unit 3, so that the latter can only rotate during normal use.

[0043] During the aforementioned rotation process, the water inlet pipe 11 remains stationary, while the nozzle 12 always faces the reaming drill bit a, thereby providing a relatively thorough and comprehensive cleaning effect to the reaming drill bit a. Finally, there is the perforated movable cover unit 4, which mainly has the following two functions.

[0044] First, the perforated movable cover unit 4 is fastened onto the water receiving tank unit 1, covering the water inlet pipe 11, nozzle 12, filter fixing plate unit 2, rotatable filter plate unit 3 and enlarging drill bit a, thereby preventing water from spilling out, ensuring the cleanliness of the operating environment, and achieving the effect of water resource recycling and reuse.

[0045] Secondly, the perforated structure on the movable cover unit 4 allows the driving vertical rod 5 to pass upward and protrude. The protruding section of the latter is the rotation driving part of the rotatable filter plate unit 3, ensuring that the nozzle 12 can directly clean the 360° position of the reaming drill bit a ring upward.

[0046] The water receiving tank unit 1 includes a rectangular box 101, a transverse protrusion 102 disposed on the inner side of the rectangular box 101 and used to support the water filter fixing plate unit 2 and the perforated movable cover unit 4, and an inlet pipe mounting hole 103 disposed on the side plate of the rectangular box 101 and located below the transverse protrusion 102.

[0047] In this embodiment, the transverse protruding plate 102 is a rectangular frame, which provides sufficient support strength for the filter fixing plate unit 2, the rotatable filter plate unit 3, the perforated movable cover unit 4, and the reaming drill bit a. Accordingly, its width can be relatively large, for example, 10-20cm, to ensure support stability.

[0048] In addition, the water inlet pipe mounting hole 103 is positioned relatively high to prevent accidental leakage of mud and water mixture at that location, and it can also shorten the required length of the water inlet pipe 11.

[0049] The filter plate unit 2 includes a rectangular perforated plate 201 disposed on the upper surface of the transverse protrusion plate 102, a circular hole 202 disposed on the rectangular perforated plate 201 for inserting and installing the rotatable filter plate unit 3, and a through port 203 disposed on the rectangular perforated plate 201 for passing upward through the water inlet pipe 11.

[0050] In this embodiment, the rectangular perforated plate 201 is 6-8 cm thick, which is relatively thick and thus can fully support the reaming drill bit a. The rectangular perforated plate 201 has evenly arranged drain holes in a linear pattern, allowing the mud-water mixture to flow downwards sufficiently and preventing accumulation on the rectangular perforated plate 201. The diameter of the drain holes is 0.5-1.5 cm.

[0051] The circular hole 202 is located in the center of the rectangular orifice plate 201. There are two or four through-holes 203, arranged in a circumferentially evenly spaced manner around the circular hole 202. The water inlet pipe 11 extends upwards from the through-hole 203. The nozzle 12 is located above the rectangular orifice plate 201 and faces the circular hole 202, allowing the nozzle 12 to directly flush the reaming drill bit a.

[0052] The rotatable filter plate unit 3 includes a circular perforated plate 301 disposed on the circular hole 202, and a drive cylinder 302 disposed on the circular perforated plate 301 and used for inserting and installing the drive vertical rod 5.

[0053] In this embodiment, the material and drain hole style of the circular perforated plate 301 are the same as those of the rectangular perforated plate 201.

[0054] When the cleaning device is in normal use, the reaming drill bit a is placed on the upper surface of the circular perforated plate 301. The lower end of the driving vertical rod 5 is inserted into the driving cylinder 302, and its upper end protrudes above the perforated movable cover unit 4, thereby allowing the driving vertical rod 5 to indirectly drive the reaming drill bit a to rotate, ensuring that the entire circle of the reaming drill bit a can be directly rinsed by the nozzle 12.

[0055] The perforated movable cover unit 4 includes a rectangular cover 401 disposed on the upper surface of the transverse protrusion plate 102 and sleeved with the water filter fixing plate unit 2, and a fan-shaped annular opening 402 disposed on the top plate of the rectangular cover 401 and used to pass upward through the driving vertical rod 5.

[0056] In this embodiment, when the cleaning device is used correctly, the opening of the rectangular cover 401 faces the direction of the rectangular box 101, and its lower end face is located on the horizontal protrusion plate 102. Its vertical outer side is properly attached to the rectangular box 101, so that the rectangular cover 401 is not prone to significant lateral displacement.

[0057] The annular opening 402 has a center angle greater than 180°. Therefore, the vertical rod 5 for driving can rotate from one end to the other inside it. Combined with the two rows of nozzles 12 arranged at least on the left and right, the hole-reaming drill bit a can achieve a complete direct cleaning effect in the annular direction.

[0058] On the other hand, the radial dimension of the fan-shaped annular opening 402 is 0.5-1.0 cm larger than the diameter of the vertical rod 5 for driving. The height of the upper end face of the latter is 4-8 cm higher than the upper surface of the rectangular cover 401, thereby ensuring that the exposed section has a sufficient gripping position or a docking position for the external drive motor.

[0059] The water receiving tank unit 1 also includes a vertical protrusion 104 disposed on the upper surface of the horizontal protrusion plate 102 and used to horizontally limit the water filter fixing plate unit 2.

[0060] In this embodiment, the horizontal protrusion 102 is a complete rectangular ring-shaped structure, designed to provide relatively high support strength. Conversely, the vertical protrusions 104 are arranged in groups of four or eight, independently, to prevent the cleaning water on the inner surface of the rectangular cover 401 from being obstructed as it flows downwards.

[0061] Assuming that the vertical protrusion 104 is also a vertical, rectangular ring-shaped complete body, the area outside its outer side and inside the rectangular box 101 is prone to accumulating sewage and is not easy to clean.

[0062] On the other hand, the main function of the vertical protrusion 104 is to laterally limit the rectangular perforated plate 201 installed first, so that when the rectangular cover 401 is installed later, the gap between the former and the inner side of the rectangular box 101 is uniform and sufficient, ensuring that the rectangular cover 401 can be effectively inserted downward and covered without moving.

[0063] The filter plate unit 2 further includes a protruding ring 204 disposed on the circular hole 202 and used to support the rotatable filter plate unit 3, and ball bearings 205 disposed on the upper surface of the protruding ring 204.

[0064] In this embodiment, the circular perforated plate 301 needs to be vertically fixed on the rectangular perforated plate 201. One way to achieve this is as follows: The protruding circular ring 204 and the rectangular perforated plate 201 are integrally formed, with their lower surfaces flush and the upper surface of the former being lower than that of the latter. This allows the circular perforated plate 301 to rotate freely within the circular hole 202 without falling out. See the attached diagram for details. Figure 4 and 9 .

[0065] The upper surface of the protruding ring 204 is provided with a spherical groove for embedding and installing the ball 205, thereby making the frictional resistance of the circular perforated plate 301 relatively small when rotating.

[0066] Furthermore, the thickness of the protruding ring 204 is half the thickness of the rectangular perforated plate 201, and the upper surface of the circular perforated plate 301 may or may not be flush with the upper surface of the rectangular perforated plate 201.

[0067] The rotatable filter plate unit 3 also includes a vertical rod 303 and a vertical cylinder 304 respectively disposed on the upper and lower surfaces of the circular perforated plate 301 and used for inserting and sleevering the reaming drill bit a. The driving cylinder 302 is provided on both the upper and lower surfaces of the circular perforated plate 301.

[0068] In the prior art, as shown in the appendix Figure 7 ,8 As shown, the reamer bit a is installed on the rotary drilling rig using either an insertion screw connection or a sleeve screw connection. Therefore, the mounting end structure of the reamer bit a is rod-shaped or cylindrical.

[0069] Correspondingly, the vertical rod 303 can relatively stably and vertically fix the corresponding cylindrical reaming drill bit a, and the vertical cylinder 304 can relatively stably and vertically fix the corresponding rod-shaped reaming drill bit a, ultimately ensuring that the reaming drill bit a can be thoroughly cleaned.

[0070] Neither the vertical rod 303 nor the driving cylinder 302 needs to be threaded. It is sufficient to ensure that the reaming drill bit a does not rotate relative to the circular hole plate 301 when the circular hole plate 301 rotates.

[0071] Before using the cleaning device, the circular perforated plate 301 should be adjusted so that the vertical rod 303 or the driving cylinder 302 faces upwards, according to the specific style of the reaming drill bit a, and the circular perforated plate 301 can be manually flipped.

[0072] The perforated movable cover unit 4 further includes an arc-shaped vertical plate 403 disposed on the upper surface of the rectangular cover 401, and a fan-shaped annular top plate 404 disposed on the arc-shaped vertical plate 403 and used to cover the fan-shaped annular opening 402.

[0073] In this embodiment, the rectangular cover 401, the arc-shaped vertical plate 403, and the fan-shaped annular top plate 404 are integrally formed. The main function of the fan-shaped annular top plate 404 is to properly cover the fan-shaped annular opening 402 to prevent the washing water from splashing outwards in large quantities at the opening.

[0074] On the other hand, there is only one arc-shaped vertical plate 403, which is located on the radially outer side of the annular opening 402, thus not affecting the connection between the motor and the drive vertical rod 5. For details, please refer to the appendix. Figure 10 .

[0075] Correspondingly, the motor mounting hole 405 is located in the center of the top plate of the rectangular cover 401, and the top plate is also provided with symmetrical hoisting openings 406 on the opposite side, which makes the opening and locking operations of the perforated movable cover unit 4 simple and convenient.

[0076] In addition, the fan-shaped annular top plate 404 is relatively high to avoid friction with the driving vertical rod 5 during rotation.

[0077] The water receiving tank unit 1 also includes a water inlet 105 disposed on the side plate of the rectangular tank 101 and located below the transverse protrusion plate 102.

[0078] In this embodiment, when the cleaning device is in use, the rectangular box 101 and the area below the rectangular perforated plate 201 contain a relatively turbulent mixture of mud and water. When multiple reaming drill bits a need to be cleaned continuously, the volume of the rectangular box 101 is relatively small, and the mud and water mixture can be simultaneously extracted from the water inlet 105, then separated into layers in other containers, with the clean water ultimately reused.

[0079] When the volume of the rectangular box 101 is sufficient, no extraction operation is required at the water inlet 105 during the cleaning operation, and the rectangular box 101 serves as the aforementioned "other container". After the cleaning operation is completed, the upper layer of clean water is reused, and the lower layer of sludge is collected and removed.

[0080] Furthermore, the water inlet 105 requires the use of an external water pump, which does not require a fixed water pipe, as long as it can be inserted. The water inlet mounting hole 103, however, is different; it requires proper fixing of the water inlet pipe 11 to ensure the stability of the nozzle 12.

[0081] Correspondingly, the water inlet pipe 11 is generally Y-shaped, with both ends sealed and one end connected to an external water pump. The sealed end passes upward through the through-hole 203 and is fixed itself, and is used to install two rows of nozzles 12.

[0082] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of this application. These are non-inventive modifications and are protected by patent law as long as they are within the scope of the claims of this application.

Claims

1. A cleaning device for rotary drilling reamers used in cast-in-place piles, comprising a water inlet pipe (11), characterized in that: It also includes a water receiving tank unit (1) with the water inlet pipe (11) inserted into it, a water filter fixing plate unit (2) set in the water receiving tank unit (1), a rotatable water filter plate unit (3) that is engaged on the water filter fixing plate unit (2) and used to place the reaming drill bit (a), a perforated movable cover unit (4) set on the water receiving tank unit (1) and covering the water filter fixing plate unit (2) and the rotatable water filter plate unit (3), and a driving vertical rod (5) set on the rotatable water filter plate unit (3), passing upward through the perforated movable cover unit (4) and used to rotate the rotatable water filter plate unit (3).

2. The cleaning device for rotary drilling reamers for cast-in-place piles according to claim 1, characterized in that: The water receiving tank unit (1) includes a rectangular tank (101), a transverse protrusion plate (102) disposed on the inner side of the rectangular tank (101) and used to support the water filter fixing plate unit (2) and the perforated movable cover unit (4), and an inlet pipe mounting hole (103) disposed on the side plate of the rectangular tank (101) and located below the transverse protrusion plate (102).

3. A cleaning device for rotary drilling reamers for cast-in-place piles according to claim 2, characterized in that: The filter plate unit (2) includes a rectangular perforated plate (201) disposed on the upper surface of the transverse protrusion plate (102), a circular hole (202) disposed on the rectangular perforated plate (201) for inserting and installing the rotatable filter plate unit (3), and a through port (203) disposed on the rectangular perforated plate (201) for passing through the water inlet pipe (11) upward.

4. A cleaning device for rotary drilling reamers for cast-in-place piles according to claim 3, characterized in that: The rotatable filter plate unit (3) includes a circular perforated plate (301) disposed on the circular hole (202) and a drive cylinder (302) disposed on the circular perforated plate (301) and used to insert and install the drive vertical rod (5).

5. A cleaning device for rotary drilling reamers for cast-in-place piles according to claim 2, characterized in that: The perforated movable cover unit (4) includes a rectangular cover (401) disposed on the upper surface of the transverse protrusion plate (102) and fitted onto the water filter fixing plate unit (2), and a fan-shaped annular opening (402) disposed on the top plate of the rectangular cover (401) and used to pass upward through the driving vertical rod (5).

6. A cleaning device for rotary drilling reamers for cast-in-place piles according to claim 2, characterized in that: The water receiving tank unit (1) also includes a vertical protrusion (104) disposed on the upper surface of the horizontal protrusion plate (102) and used to horizontally limit the water filter fixing plate unit (2).

7. A cleaning device for rotary drilling reamers for cast-in-place piles according to claim 3, characterized in that: The filter fixing plate unit (2) further includes a protruding ring (204) disposed on the circular hole (202) and used to support the rotatable filter plate unit (3), and a ball bearing (205) disposed on the upper surface of the protruding ring (204).

8. A cleaning device for rotary drilling reamers for cast-in-place piles according to claim 4, characterized in that: The rotatable filter plate unit (3) also includes a vertical rod (303) and a vertical cylinder (304) respectively disposed on the upper and lower surfaces of the circular perforated plate (301) and used for inserting and sleevering the reaming drill bit (a). The driving cylinder (302) is provided on both the upper and lower surfaces of the circular perforated plate (301).

9. A cleaning device for rotary drilling reamers for cast-in-place piles according to claim 5, characterized in that: The perforated movable cover unit (4) further includes an arc-shaped vertical plate (403) disposed on the upper surface of the rectangular cover (401), and a fan-shaped annular top plate (404) disposed on the arc-shaped vertical plate (403) and used to cover the fan-shaped annular opening (402).

10. A cleaning device for rotary drilling reamers for cast-in-place piles according to claim 2, characterized in that: The water receiving tank unit (1) also includes a water inlet (105) disposed on the side plate of the rectangular tank (101) and located below the transverse protrusion plate (102).

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