A hole-forming apparatus for a groundwater monitoring well and a method of using the same

Abstract

The application discloses a pore-forming device for a groundwater monitoring well and a use method thereof, and relates to the technical field of monitoring wells, comprising a base, four corners of the bottom of the base are provided with supporting legs, two limiting blocks are arranged on the upper portion of one side of the base, a concave frame is hingedly connected between the two limiting blocks, a counterweight is arranged on one side of the upper portion of the base, and an inclined shaft pore-forming driving element is arranged on the upper portion of the counterweight. The pore-forming device for the groundwater monitoring well and the use method thereof can adjust the angle of the concave frame and the angle of the drill rod during well drilling, and can realize the drilling work of the inclined shaft when encountering the inclined ground. During the drilling process, the two sealing plates can surround the position of the drill rod on the ground, so that the mud and water cannot splash during the drilling of the drill rod.

Description

Technical Field

[0001] This invention relates to the field of monitoring well technology, specifically to a drilling device for groundwater monitoring wells and its usage method. Background Technology

[0002] Due to the complex geological strata beneath the surface and the slow flow of groundwater, groundwater pollution is characterized by its slow progression, difficulty in detection, and challenges in remediation. Furthermore, unlike surface water, groundwater cannot be directly observed; therefore, specialized groundwater monitoring is essential. Strengthening dynamic monitoring of groundwater and understanding its spatial and temporal distribution and variation patterns in quantity and quality are crucial for preventing further deterioration of groundwater pollution. Groundwater monitoring wells are formed through drilling.

[0003] The drilling rig for groundwater monitoring wells uses a motor to drive the drill rod to rotate, which makes it penetrate deep into the ground to complete the drilling work. However, traditional drilling rigs can only drill on flat ground. If the ground is sloping and an inclined well needs to be drilled, the drilling angle of the drill rod cannot be adjusted. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a drilling device and its usage method for groundwater monitoring wells, solving the problem that traditional drilling rigs can only drill holes on flat ground, and cannot adjust the drilling angle of the drill bit when encountering sloping ground and needing to drill inclined wells.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a drilling device for groundwater monitoring wells, comprising a base, wherein each of the four corners of the bottom of the base is provided with a support foot, and two limiting blocks are provided on the upper part of one side of the base, a concave frame is hinged between the two limiting blocks, a counterweight is provided on the upper part of the base at one side of the concave frame, and a inclined well drilling drive is provided on the upper part of the counterweight.

[0006] As a further aspect of the present invention: the inclined well drilling drive includes a fixed seat disposed on the upper part of one side of the counterweight block, a second servo motor is mounted on one side of the fixed seat, the output shaft of the second servo motor is connected to a second screw, a fixed plate is screwed to the outside of the second screw, and adjusting plates are hinged to both sides of the fixed plate, and the other ends of the two adjusting plates are respectively hinged to two corners on the upper side of the concave frame.

[0007] As a further aspect of the present invention: a limiting plate is slidably sleeved on the outside of the concave frame, a limiting seat is provided on one side of the limiting plate, a drilling motor is installed on the upper part of the limiting seat, and a drill rod is connected to the output shaft of the drilling motor.

[0008] As a further aspect of the present invention: a first servo motor is installed at the upper middle position of the concave frame, the output shaft of the first servo motor is connected to a first screw, and the limiting plate is screwed to the outside of the first screw by a thread.

[0009] As a further aspect of the present invention: the bottom of the base is provided with a mud-proof component, which includes a blocking part and a storage part. The blocking part is used to surround the drill rod and block mud and water, and the storage part is used to store the blocking part and reduce the space occupied.

[0010] As a further aspect of the present invention: the blocking part includes a housing plate, and semi-circular closed plates are hinged to both sides of the back of the housing plate. The inner diameter of the two closed plates after being combined is larger than the outer diameter of the drill rod, and the two closed plates after being combined can be moved to the central axis position of the drill rod. A third servo motor is installed on the front side of the housing plate. The output shaft of the third servo motor is connected to a third screw at the inner position of the housing plate. A guide plate is threaded to the outside of the third screw. Guide grooves are provided on both sides of the housing plate. The two ends of the guide plate slide through the interior of the two guide grooves respectively, and adjusting rods are hinged to both ends of the guide plate. The other ends of the two adjusting rods are respectively hinged to one side of the two closed plates.

[0011] As a further aspect of the present invention: the storage unit includes a fourth servo motor installed on the lower part of one side of the base, the output shaft of the fourth servo motor is connected to a fourth screw, a nut block is threaded onto the outside of the fourth screw, a lifting hydraulic cylinder is installed at the bottom of the nut block, the output shaft of the lifting hydraulic cylinder is connected to a plate, an adjusting hydraulic cylinder is installed on the upper part of the plate, an adjusting shaft is hinged to the output shaft of the adjusting hydraulic cylinder, a protruding rod is provided on the upper front side of the housing plate, the other end of the adjusting shaft is hinged to the upper end of the protruding rod, and the other end of the protruding block is hinged to the front side of the housing plate.

[0012] As a further aspect of the present invention: the bottom of the base is provided with a guide groove corresponding to the position of the nut block, and the upper end of the nut block is slidably installed in the guide groove.

[0013] As a further aspect of the present invention: the sealed plate has a cavity inside, and a water inlet communicating with the inside is provided on one side of the outer side of the sealed plate, and a plurality of nozzles are provided on the inner side of the sealed plate.

[0014] A method for forming a groundwater monitoring well, using a drilling device, comprises the following steps:

[0015] S1. Move the drilling device to the desired drilling location. When drilling a vertical well on flat ground, the first servo motor drives the first screw to rotate. The first screw drives the limiting plate to slide downwards on the concave frame. Simultaneously, the drilling motor drives the drill rod to rotate, and the drill rod will drill into the ground to perform the hole-forming work. Before the drill rod moves downwards, the third servo motor drives the third screw to rotate. The third screw drives the guide plate to move, and the guide plate will cause the adjusting rod to drive the closing plate to rotate, opening the two closing plates. After opening, the fourth servo motor drives the fourth screw to rotate, and the fourth screw drives the nut block to rotate. This will drive the plate of the lifting hydraulic cylinder output shaft to move, which in turn drives the entire blocking part to move, so that the two sealing plates move to directly below the drill rod. Then the third servo motor will work to make the two sealing plates merge together. After merging, the drill rod will move downward, and the two sealing plates will surround the drill rod. Then the lifting hydraulic cylinder will drive the plate to move downward, so that the sealing plates move downward and make them contact the ground. Finally, drilling will be carried out. Because the two sealing plates surround the drill rod, the mud and water produced by drilling will splash to the inside of the two sealing plates instead of splashing to the outside, making it convenient for personnel to inspect closely.

[0016] S2. When drilling a sloping well, the second servo motor drives the second screw to rotate. The second screw drives the fixed plate to move, which in turn causes the adjusting plate to rotate the concave frame. The concave frame then adjusts the angle of the drill rod so that the drill rod is perpendicular to the slope. While the drill rod is adjusting its angle, the hydraulic cylinder is adjusted to move the adjusting shaft. The adjusting shaft then drives the housing plate to rotate around the protrusion, which in turn drives the sealing plate to rotate. The sealing plate rotates to the same position as the drill rod, thus preventing mud and water from entering during the drilling of the sloping well.

[0017] S3. After drilling is completed, raise the drill rod. At the same time, water is introduced into the water inlet. The water enters the cavity inside the sealed plate and then sprays out from the nozzle onto the drill rod. As the drill rod rotates and rises, it can flush various parts of the drill rod.

[0018] S4. After the drill rod rises above the sealing plate, the fourth servo motor continues to drive the fourth screw to rotate, causing the plate to move towards the bottom of the base, thereby allowing the blocking part to be stored at the bottom of the base and reducing the space occupied.

[0019] This invention provides a drilling device and its method for use in groundwater monitoring wells, which has the following advantages compared with the prior art:

[0020] The drilling device and its usage method for the groundwater monitoring well, by setting up a sloping well drilling drive component, can adjust the angle of the concave frame during drilling, and thus adjust the angle of the drill rod. When encountering sloping ground, it can realize the drilling work of the sloping well.

[0021] The drilling device and its usage method for this groundwater monitoring well: During the drilling process, two sealing plates can enclose the drill rod located on the ground, so that mud and water will not splash when drilling. During the rotation of the drill rod, personnel can observe the drilling process up close without being splashed with mud and water. When drilling on an inclined plane, the sealing plates can also adjust their angle to easily enclose the drill rod. After drilling is completed, the blocking part can be stored away to reduce its space occupation.

[0022] The drilling device and its usage method for the groundwater monitoring well: After drilling is completed, as the drill bit rises, water is introduced into the water inlet on the sealing plate, and the water is sprayed from the nozzle onto the drill rod, thereby cleaning the drill rod. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the inclined well drilling drive component of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the anti-mud component of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the blocking part of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the storage part of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the sealing plate of the present invention.

[0029] In the diagram: 1. Base; 2. Support leg; 3. Limiting block; 4. Concave frame; 41. Limiting plate; 42. Limiting seat; 43. Drilling motor; 44. Drill rod; 45. First servo motor; 46. First screw; 5. Counterweight; 6. Inclined well drilling drive component; 61. Fixed seat; 62. Second servo motor; 63. Second screw; 64. Fixed plate; 65. Adjusting plate; 7. Mud-proof component; 71. Blocking part; 711. Shell plate; 712. Sealing plate; 7121. Cavity; 7122. Water inlet; 7123. Nozzle; 713. Third servo motor; 714. Third screw; 715. Guide plate; 716. Adjusting rod; 717. Guide groove; 718. Protruding rod; 72. Storage part; 721. Fourth servo motor; 722. Fourth screw; 723. Nut block; 724. Lifting hydraulic cylinder; 725. Plate; 726. Adjusting hydraulic cylinder; 727. Adjusting shaft; 728. Protruding block. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-6 This invention provides four technical solutions: Example

[0032] Please see Figure 1 In this embodiment of the invention, a drilling device for groundwater monitoring wells includes a base 1, with support legs 2 at the four corners of the bottom of the base 1, and two limiting blocks 3 on the upper part of one side of the base 1. A concave frame 4 is hinged between the two limiting blocks 3, and a counterweight 5 is provided on the upper part of the base 1 at one side of the concave frame 4. A inclined well drilling drive 6 is provided on the upper part of the counterweight 5.

[0033] Please see Figure 2 In this embodiment of the invention, the inclined well drilling drive 6 includes a fixed base 61 disposed on the upper part of one side of the counterweight block 5. A second servo motor 62 is installed on one side of the fixed base 61. The output shaft of the second servo motor 62 is connected to a second screw 63. A fixed plate 64 is screwed to the outside of the second screw 63 by means of threads. Adjustment plates 65 are hinged to both sides of the fixed plate 64. The other ends of the two adjustment plates 65 are respectively hinged to two corners on the upper side of the concave frame 4.

[0034] Please see Figure 1 In this embodiment of the invention, a limiting plate 41 is slidably sleeved on the outside of the concave frame 4, a limiting seat 42 is provided on one side of the limiting plate 41, a drilling motor 43 is installed on the upper part of the limiting seat 42, and a drill rod 44 is connected to the output shaft of the drilling motor 43. The drilling motor 43 drives the drill rod 44 to rotate, and the drill rod 44 will perform drilling work on the ground.

[0035] Please see Figure 1 In this embodiment of the invention, a first servo motor 45 is installed at the upper middle position of the concave frame 4. The output shaft of the first servo motor 45 is connected to a first screw 46. The limiting plate 41 is screwed to the outside of the first screw 46. The first servo motor 45 drives the first screw 46 to rotate. The first screw 46 causes the limiting plate 41 to slide downward on the concave frame 4, which enables the drill rod 44 to penetrate deep into the ground for hole forming.

[0036] Example 2 differs from Example 1 in that:

[0037] Please see Figure 3In this embodiment of the invention, the bottom of the base 1 is provided with a mud-proof component 7. The mud-proof component 7 includes two parts: a blocking part 71 and a storage part 72. The blocking part 71 is used to surround the drill rod 44 and play the role of blocking mud and water. The storage part 72 is used to store the blocking part 71 and reduce the space occupied.

[0038] Please see Figure 4 In this embodiment of the invention, the blocking part 71 includes a housing plate 711, with semi-circular closing plates 712 hinged to both sides of the back of the housing plate 711. The inner diameter of the two closing plates 712 combined is larger than the outer diameter of the drill rod 44, and the two closing plates 712 combined can be moved to the central axis position of the drill rod 44, so that the two closing plates 712 can surround the drill rod 44, and the drill rod 44 can pass between the two closing plates 712 to drill into the ground. A first... Three servo motors 713, the output shaft of the third servo motor 713 is located inside the housing plate 711 and connected to a third screw 714. A guide plate 715 is screwed onto the outside of the third screw 714. Guide grooves 717 are provided on both sides of the housing plate 711. The two ends of the guide plate 715 slide through the interior of the two guide grooves 717 respectively, and both ends of the guide plate 715 are hinged to adjusting rods 716. The other ends of the two adjusting rods 716 are respectively hinged to one side of the two closed plates 712.

[0039] Example 3 differs from Examples 1 and 2 in that:

[0040] Please see Figure 5 In this embodiment of the invention, the storage part 72 includes a fourth servo motor 721 installed on the lower part of one side of the base 1. The output shaft of the fourth servo motor 721 is connected to a fourth screw 722. A nut block 723 is threaded onto the outside of the fourth screw 722. A lifting hydraulic cylinder 724 is installed at the bottom of the nut block 723. The output shaft of the lifting hydraulic cylinder 724 is connected to a plate 725. An adjusting hydraulic cylinder 726 is installed on the upper part of the plate 725. An adjusting shaft 727 is hinged to the output shaft of the adjusting hydraulic cylinder 726. A protruding rod 718 is provided on the upper front side of the housing plate 711. The other end of the adjusting shaft 727 is hinged to the upper end of the protruding rod 718. The other end of the protruding block 728 is hinged to the front side of the housing plate 711.

[0041] Please see Figure 5 In this embodiment of the invention, the bottom of the base 1 is provided with a guide groove corresponding to the position of the nut block 723. The upper end of the nut block 723 is slidably installed in the guide groove. When the fourth screw 722 drives the nut block 723 to move, the nut block 723 will slide in the guide groove, which plays a role in limiting and guiding the nut block 723.

[0042] Example 4 differs from Examples 1, 2, and 3 in that:

[0043] Please see Figure 6 In this embodiment of the invention, the sealing plate 712 has a cavity 7121 inside, and a water inlet 7122 communicating with the inside is provided on the outer side of the sealing plate 712. A plurality of nozzles 7123 are provided on the inner side of the sealing plate 712. When the drill rod 44 rises above the sealing plate 712, the fourth servo motor 721 continues to drive the fourth screw 722 to rotate, so that the plate 725 moves towards the bottom of the base 1, thereby allowing the blocking part 71 to be stored at the bottom of the base 1, reducing the space occupied.

[0044] A method for forming a groundwater monitoring well, using a drilling device, comprises the following steps:

[0045] S1. Move the drilling device to the desired drilling location. When drilling a vertical well on flat ground, the first servo motor 45 drives the first screw 46 to rotate. The first screw 46 drives the limiting plate 41 to slide downwards on the concave frame 4. At the same time, the drilling motor 43 drives the drill rod 44 to rotate, and the drill rod 44 will drill into the ground to perform the hole-forming work. Before the drill rod 44 moves downwards, the third servo motor 713 drives the third screw 714 to rotate. The third screw 714 drives the guide plate 715 to move. The guide plate 715 will cause the adjusting rod 716 to drive the closing plate 712 to rotate, causing the two closing plates 712 to open. After opening, the fourth servo motor 721 drives the fourth screw 722 to rotate, and the fourth screw 722 drives the nut block 723 to rotate. The nut block 723 will drive the plate 725 of the output shaft of the lifting hydraulic cylinder 724 to move, which in turn drives the blocking part 71 to move as a whole, so that the two sealing plates 712 move directly below the drill rod 44. Then the third servo motor 713 will work to make the two sealing plates 712 merge together. After merging, the drill rod 44 will move downward, and the two sealing plates 712 will surround the drill rod 44. Then the lifting hydraulic cylinder 724 will drive the plate 725 to move downward, so that the sealing plates 712 will move downward and contact the ground. Finally, the drilling work will be carried out. Since the two sealing plates 712 surround the drill rod 44, the mud and water produced by drilling will splash to the inside of the two sealing plates 712 instead of splashing to the outside, which makes it convenient for personnel to inspect closely.

[0046] S2. When it is necessary to drill a sloping well, the second servo motor 62 drives the second screw 63 to rotate. The second screw 63 drives the fixed plate 64 to move. The fixed plate 64 will cause the adjusting plate 65 to drive the concave frame 4 to rotate. The concave frame 4 will drive the drill rod 44 to adjust its angle so that the drill rod 44 is perpendicular to the slope. While the drill rod 44 is adjusting its angle, the hydraulic cylinder 726 is adjusted to move the adjusting shaft 727. The adjusting shaft 727 will drive the housing plate 711 to rotate around the protrusion 728, which in turn drives the sealing plate 712 to rotate. The sealing plate 712 will rotate to the same position as the drill rod 44, so that it can also play a role in preventing mud and water when drilling a sloping well.

[0047] S3. After drilling is completed, the drill rod 44 is raised. At the same time, water is introduced into the water inlet 7122. The water enters the cavity 7121 inside the sealing plate 712 and then sprays out from the nozzle 7123 onto the drill rod 44. In the state of rotation and rising of the drill rod 44, the various positions on the drill rod 44 can be flushed.

[0048] S4. When the drill rod 44 rises above the sealing plate 712, the fourth servo motor 721 continues to drive the fourth screw 722 to rotate, so that the plate 725 moves towards the bottom of the base 1, thereby allowing the blocking part 71 to be stored at the bottom of the base 1, reducing the space occupied.

[0049] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A drilling device for groundwater monitoring wells, comprising a base (1), characterized in that: The base (1) has four corner supports (2) at the bottom, and two limiting blocks (3) are provided on the upper part of one side of the base (1). A concave frame (4) is hinged between the two limiting blocks (3). A counterweight (5) is provided on the upper part of the base (1) at one side of the concave frame (4). A inclined well drilling drive (6) is provided on the upper part of the counterweight (5). The inclined well drilling drive (6) includes a fixed seat (61) set on the upper part of one side of the counterweight (5). A second servo motor (62) is installed on one side of the fixed seat (61). The output shaft of the second servo motor (62) is connected to a second screw (63). A fixed plate (64) is screwed to the outside of the second screw (63) by a thread. Adjustment plates (65) are hinged to both sides of the fixed plate (64). The other ends of the two adjustment plates (65) are respectively hinged to two corners on the upper side of the concave frame (4). The bottom of the base (1) is provided with a mud-proof component (7). The mud-proof component (7) includes two parts: a blocking part (71) and a storage part (72). The blocking part (71) is used to surround the drill rod (44) and play the role of blocking mud and water. The storage part (72) is used to store the blocking part (71) and reduce the space occupied. The blocking part (71) includes a housing plate (711), and semi-circular closed plates (712) are hinged to both sides of the back of the housing plate (711). The inner diameter of the two closed plates (712) after being combined is larger than the outer diameter of the drill rod (44), and the two closed plates (712) after being combined can move to the central axis position of the drill rod (44). A third servo motor (713) is installed on the front side of the housing plate (711). The output shaft of the third servo motor (713) is connected to a third screw (714) at the internal position of the housing plate (711). A guide plate (715) is screwed to the outside of the third screw (714) by a thread. Guide grooves (717) are provided on both sides of the housing plate (711). The two ends of the guide plate (715) slide through the interior of the two guide grooves (717) respectively, and the two ends of the guide plate (715) are hinged to adjusting rods (716). The other ends of the two adjusting rods (716) are hinged to one side of the two closed plates (712). The storage unit (72) includes a fourth servo motor (721) installed on the lower side of the base (1). The output shaft of the fourth servo motor (721) is connected to a fourth screw (722). A nut block (723) is screwed onto the outside of the fourth screw (722). A lifting hydraulic cylinder (724) is installed at the bottom of the nut block (723). The output shaft of the lifting hydraulic cylinder (724) is connected to a plate (725). An adjusting hydraulic cylinder (726) is installed on the upper part of the plate (725). A protrusion block (728) is provided at the front end of the plate (725). An adjusting shaft (727) is hinged to the output shaft of the adjusting hydraulic cylinder (726). A protrusion rod (718) is provided on the upper front side of the housing plate (711). The other end of the adjusting shaft (727) is hinged to the upper end of the protrusion rod (718). The other end of the protrusion block (728) is hinged to the front side of the housing plate (711).

2. The drilling device for groundwater monitoring wells according to claim 1, characterized in that: The concave frame (4) is slidably fitted with a limiting plate (41), and a limiting seat (42) is provided on one side of the limiting plate (41). A drilling motor (43) is installed on the upper part of the limiting seat (42), and the output shaft of the drilling motor (43) is connected to a drill rod (44).

3. The drilling device for groundwater monitoring wells according to claim 2, characterized in that: A first servo motor (45) is installed at the upper middle position of the concave frame (4). The output shaft of the first servo motor (45) is connected to a first screw (46). The limiting plate (41) is screwed to the outside of the first screw (46) by thread.

4. The drilling device for groundwater monitoring wells according to claim 1, characterized in that: The bottom of the base (1) is provided with a guide groove corresponding to the position of the nut block (723), and the upper end of the nut block (723) is slidably installed in the guide groove.

5. The drilling device for groundwater monitoring wells according to claim 1, characterized in that: The sealing plate (712) has a cavity (7121) inside, and a water inlet (7122) communicating with the inside is provided on the outer side of the sealing plate (712). Several nozzles (7123) are provided on the inner side of the sealing plate (712).

6. A method for drilling wells for groundwater monitoring, characterized in that: The method of forming a borehole using the borehole forming apparatus for groundwater monitoring wells according to any one of claims 1 to 5 includes the following steps: S1. Move the drilling device to the location where drilling is required. When drilling a vertical well on flat ground, the first servo motor (45) drives the first screw (46) to rotate. The first screw (46) drives the limiting plate (41) to slide downward on the concave frame (4). At the same time, the drilling motor (43) drives the drill rod (44) to rotate. The drill rod (44) will drill into the ground to perform hole formation. Before the drill rod (44) moves downward, the third servo motor (713) drives the third screw (714) to rotate. The third screw (714) drives the guide plate (715) to move. The guide plate (715) will cause the adjusting rod (716) to drive the closing plate (712) to rotate, so that the two closing plates (712) open. After opening, the fourth servo motor (721) drives the fourth screw (722) to rotate. The fourth screw (722) drives the nut block (723) to rotate. When the nut block (723) moves, it will drive the plate (725) of the output shaft of the lifting hydraulic cylinder (724) to move, which in turn drives the blocking part (71) to move as a whole, so that the two sealing plates (712) move to the bottom of the drill rod (44). Then the third servo motor (713) will work to make the two sealing plates (712) merge together. After merging, the drill rod (44) will move downward, and the two sealing plates (712) will surround the drill rod (44). Then the lifting hydraulic cylinder (724) will drive the plate (725) to move downward, so that the sealing plates (712) will move downward and make them contact the ground. Finally, the drilling work will be carried out. Since the two sealing plates (712) surround the drill rod (44), the mud and water generated by drilling will splash to the inside of the two sealing plates (712) instead of splashing to the outside, which makes it convenient for personnel to check closely. S2. When it is necessary to drill an inclined well on the slope, the second servo motor (62) drives the second screw (63) to rotate. The second screw (63) drives the fixed plate (64) to move. The fixed plate (64) will cause the adjusting plate (65) to drive the concave frame (4) to rotate. The concave frame (4) will drive the angle of the drill rod (44) to be adjusted so that the drill rod (44) is perpendicular to the slope. While the angle of the drill rod (44) is adjusted, the hydraulic cylinder (726) is adjusted to make the adjusting shaft (727) move. The adjusting shaft (727) will drive the shell plate (711) to rotate around the protrusion (728), and then drive the closing plate (712) to rotate so that the closing plate (712) rotates to the same position as the angle of the drill rod (44). In this way, when drilling an inclined well, it can also play a role in preventing mud and water. S3. After drilling is completed, the drill rod (44) is raised. At the same time, water is introduced into the water inlet (7122). The water enters the cavity (7121) inside the sealing plate (712) and then sprays out from the nozzle (7123) towards the drill rod (44). In the state of rotation and rising of the drill rod (44), it can perform flushing work on various positions on the drill rod (44). S4. When the drill rod (44) rises above the closed plate (712), the fourth servo motor (721) continues to drive the fourth screw (722) to rotate, so that the plate (725) moves towards the bottom of the base (1), thereby allowing the blocking part (71) to be stored at the bottom of the base (1) and reducing the space occupied.

Images