A stop valve processing drilling device and method

Abstract

The embodiment of the present application provides a stop valve processing drilling device and method thereof, which relates to the field of stop valve processing technology. A stop valve processing drilling device includes a drilling table and a material storage box on the side of the drilling table. Mobile drilling mechanisms are installed on both sides of the upper end of the drilling table. A valve body positioning mechanism is installed on the drilling table in the middle of the two groups of mobile drilling mechanisms. An auxiliary positioning component is installed on the other side of the drilling table. The auxiliary positioning component cooperates with the valve body positioning mechanism to clamp and assist in fixing the valve body, so that the two groups of mobile drilling mechanisms can synchronously drill the processing parts at both ends of the valve body. The mobile drilling mechanism of the present invention has an adjustment function, including height adjustment and horizontal displacement, to ensure that the drill bit can accurately align with the required drilling position. The reduction motor drives the gear transmission system to drive the drill bits on both sides to rotate synchronously, so as to achieve simultaneous drilling of both ends of the stop valve, greatly improving the processing efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of stop valve processing, and in particular to a stop valve processing drilling device and a method thereof. Background Art

[0002] In the valve manufacturing industry, globe valves are key components that control the flow of fluids. Their machining quality directly impacts the sealing, stability, and service life of the entire piping system. Drilling is a crucial step in globe valve processing, primarily used to create connection holes at both ends of the valve body, valve seat mounting holes, and other functional holes.

[0003] Traditional drilling equipment mostly adopts a single-station, single-drill structure, which can only achieve hole-by-hole processing. It is not only inefficient, but also prone to positioning errors due to the need for multiple clamping or adjustment of the workpiece position, affecting drilling accuracy and product consistency.

[0004] More importantly, most traditional equipment lacks multi-station simultaneous machining capabilities, making it difficult to drill both ends of a globe valve simultaneously, limiting production cycle times. Even some equipment that attempts to incorporate dual drill bits often lacks a coordinated control mechanism, leading to unstable valve bodies during mounting, requiring manual fixation, and problems such as hole offset. Summary of the Invention

[0005] In order to achieve the above-mentioned purpose, on the one hand, the present invention provides a stop valve processing drilling equipment, including a drilling table and a material storage box on the side of the drilling table, mobile drilling mechanisms are installed on both sides of the upper end of the drilling table, a valve body positioning mechanism is installed on the drilling table in the middle of the two sets of mobile drilling mechanisms, and an auxiliary positioning component is installed on the other side of the drilling table. The auxiliary positioning component cooperates with the valve body positioning mechanism to clamp and assist in fixing the valve body, so that the two sets of mobile drilling mechanisms can synchronously drill the processing parts at both ends of the valve body. The valve body positioning mechanism includes a hole located on the drilling table. A sewage trough is provided on the sewage trough, a filter plate is provided at the upper end of the sewage trough, a discharge plate is provided on the upper side of the filter plate, a slide groove is provided on the side of the discharge plate, and positioning plates are slidably provided at both ends of the slide groove, a spring is connected between the lower side of the positioning plate and the inner wall of the slide groove, an opening larger than the drill bit is provided on the positioning plate, and a card slot is provided on the outer side of the positioning plate, and a two-way screw rod 2 is rotatably installed on the drilling table, one end of the two-way screw rod 2 is connected to a second gear, and the second gear is engaged with the first gear at one end of the two-way screw rod 1, and brushes are threadedly connected at both ends of the two-way screw rod 2, and two sets of brushes are located inside the sewage trough.

[0006] Furthermore, the mobile drilling mechanism includes a base located at the upper end of the drilling table, a guide rail is provided at the upper end of the base, a movable seat slides on the guide rail, the movable seat is driven by cylinder 2 to move along the guide rail, and a mounting seat is provided at the upper end of the movable seat for sliding, and the mounting seat is connected to cylinder 3 fixed on one side of the movable seat, and cylinder 1 is installed at the bottom of the drilling table, and the piston end of cylinder 1 passes through the drilling table and is connected to the bottom of the base.

[0007] Furthermore, a reduction motor is installed at the upper end of the mounting seat, and a shell is provided at one end of the reduction motor. A driving wheel is rotatably installed in the shell, and the rotating shaft of the driving wheel is connected to the output shaft of the reduction motor. Driven wheels are installed on both sides of the shell, and two groups of driven wheels are respectively engaged with the two sides of the driving wheel, and a drill bit is installed on the rotating shaft of the driven wheel.

[0008] Furthermore, a water outlet pipe is fixed to the upper end of the shell, and the water inlet of the water outlet pipe is connected to the external coolant through a pipeline.

[0009] Furthermore, a plurality of filter holes are provided at the bottom of the sewage trough, a drainage cone is connected to the lower side of the sewage trough, slag discharge holes are provided on both sides of the sewage trough, and sealing plates are clamped in the slag discharge holes.

[0010] Furthermore, the auxiliary positioning assembly includes a vertical rail fixed on one side of the drilling table, a lifting plate is slidingly arranged in the vertical rail, a fixed head is installed at one end of the lifting plate, a screw rod is rotatably arranged in the vertical rail, the screw rod is driven by a motor, and the screw rod is threadedly connected to the lifting plate.

[0011] Furthermore, a bidirectional screw rod 1 is rotatably installed on the drilling table, and push plates are threadedly connected to both ends of the bidirectional screw rod 1. The lower side of the push plate slides in the limit groove opened on the drilling table. The middle part of the bidirectional screw rod 1 is connected to a bevel gear 2, which meshes with the bevel gear 1 at the lower end of the screw rod, and the push plate is engaged with the slot.

[0012] Furthermore, in another aspect, the present invention also provides a method for preparing a stop valve processing drilling device, comprising the following steps:

[0013] S1. Place the stop valve to be processed in the valve body positioning mechanism on the drilling table;

[0014] S2. Use the discharge plate in the valve body positioning mechanism, the positioning plate in the chute, and the spring to position the stop valve, aligning the opening on the positioning plate with the predetermined drilling position;

[0015] S3. Start the motor to rotate the screw, causing the lifting plate to descend with the fixed head to fix the upper end of the valve body. At the same time, the meshing of bevel gear 1 and bevel gear 2 causes the bidirectional screw 1 to rotate, causing the two sets of push plates to move toward each other. The push plates push the positioning plates to fit tightly against the valve body.

[0016] In step S4, the rotation of the bidirectional screw 1 in step S3 drives the rotation of the first gear, and the meshing of the first gear and the second gear causes the bidirectional screw 2 to rotate, causing the two sets of brushes to move toward each other to the middle of the sewage tank. When the brushes are reset, the waste debris is swept to the side of the sewage tank;

[0017] S5. Start cylinder 1 to adjust the height of the base, cylinder 2 drives the movable base to move along the guide rail to the specified position, and cylinder 3 drives the mounting base to move the movable drilling mechanism close to the stop valve;

[0018] S6. The reduction motor starts, driving the driving wheel to rotate, and then the driven wheels on both sides rotate through the gear transmission system, driving the drill bit to start drilling. During the drilling process, the water outlet pipe provides coolant to help cool down and remove chips.

[0019] 1. The beneficial effects of this application are as follows: The mobile drilling mechanism has adjustment functions, including height adjustment (cylinder one) and horizontal displacement (cylinders two and three), ensuring that the drill bit can accurately align with the desired drilling location. The gear transmission system driven by the reduction motor drives the synchronous rotation of the drill bits on both sides, achieving simultaneous drilling of both ends of the stop valve, significantly improving processing efficiency. In addition, a filter plate and a drainage cone are installed at the bottom of the sewage tank to recycle, filter and reuse the coolant, saving energy and protecting the environment. The brush assembly is linked to the gears via a bidirectional screw rod two, automatically cleaning waste chips after each processing, reducing manual cleaning work and improving the automation level and overall operating efficiency of the equipment.

[0020] 2. The beneficial effects of the present application are as follows: by setting up a symmetrically distributed mobile drilling mechanism on the drilling table, and cooperating with the valve body positioning mechanism in the middle and the auxiliary positioning assembly on the side, efficient and precise positioning and clamping of the stop valve are achieved. The positioning plate in the valve body positioning mechanism is installed in the slide groove on the side of the discharge plate through spring sliding, which can adapt to valve bodies of different sizes and realize lateral clamping through the card slot and the push plate; the lifting plate in the auxiliary positioning assembly drives the fixed head to press down the upper end of the valve body, further enhancing the stability of the fixation. At the same time, the linkage design of the bidirectional screw and the bevel gear transmission system enables the clamping action to be carried out synchronously with the push of the push plate, thereby improving the clamping efficiency and consistency. This structure not only improves the clamping speed, but also effectively avoids drilling offset or processing errors caused by unstable clamping, thereby ensuring the processing quality.

[0021] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic diagram of the overall structure according to an embodiment of the present application;

[0024] Figure 2 This is the second schematic diagram of the overall structure according to the embodiment of the present application;

[0025] Figure 3 is a schematic top view of the overall structure according to an embodiment of the present application;

[0026] Figure 4 is a schematic diagram of a mobile drilling mechanism according to an embodiment of the present application;

[0027] Figure 5 Schematic diagram of the meshing of the driving wheel and the driven wheel according to an embodiment of the present application;

[0028] Figure 6 1 is a schematic diagram of the structure of the valve body positioning mechanism according to an embodiment of the present application;

[0029] Figure 7 This is a schematic diagram of the sewage tank structure according to the embodiment of the present application;

[0030] Figure 8 It is a schematic diagram of the split structure of the positioning plate and other embodiments of the present application;

[0031] Figure 9 It is a schematic diagram of the structure of the auxiliary positioning component according to an embodiment of the present application.

[0032] icon:

[0033] 1. Drilling table; 2. Storage box; 3. Mobile drilling mechanism; 31. Base; 32. Cylinder 1; 33. Mobile seat; 331. Mounting seat; 34. Cylinder 2; 35. Reducer motor; 351. Driving wheel; 352. Driven wheel; 36. Housing; 37. Drill bit; 38. Water outlet pipe; 39. Cylinder 3; 4. Valve body positioning mechanism; 41. Sewage tank; 42. Filter hole; 43. Filter plate; 44. Slag discharge hole; 45 , sealing plate; 46, discharge plate; 47, slide; 471, spring; 48, positioning plate; 481, opening; 49, slot; 5, vertical rail; 51, lifting plate; 52, fixed head; 53, screw; 54, bevel gear one; 6, drainage cone bucket; 7, two-way screw one; 71, bevel gear two; 72, push plate; 73, first gear; 74, two-way screw two; 75, second gear; 76, brush; 8, limit groove. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0035] A stop valve machining drilling device and method thereof according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0036] like Figures 1-9 As shown, a stop valve machining and drilling apparatus according to an embodiment of the present application comprises a drilling table 1, one side of which is provided with a storage box 2 for storing valve bodies to be machined or machined. Mobile drilling mechanisms 3 are symmetrically arranged on both sides of the upper end of the drilling table 1. Two sets of mobile drilling mechanisms 3 can simultaneously drill both ends of the stop valve body, significantly improving machining efficiency and consistency.

[0037] The mobile drilling mechanism 3 includes a base 31 installed on the drilling table 1, and a guide rail structure is provided on the base 31. A movable seat 33 is slidably connected to the guide rail. The movable seat 33 is driven by cylinder 2 34 to slide horizontally along the guide rail to achieve forward and backward adjustment of the drilling position. A mounting seat 331 is slidably installed on the upper part of the movable seat 33. The mounting seat 331 is driven by cylinder 3 39 fixed to one side of the movable seat 33 to adjust the feed depth of the drill bit 37, thereby achieving "secondary stroke" control during the drilling process and improving drilling accuracy and stability.

[0038] Furthermore, a cylinder 32 is installed at the bottom of the drilling platform 1, and its piston rod passes through the drilling platform 1 and is connected to the lower surface of the base 31, which is used to drive the entire mobile drilling mechanism 3 to fine-tune up and down so as to drill other positions of the valve body.

[0039] A reduction motor 35 is installed on the top of the mounting base 331. The outer side of the reduction motor 35 is connected to a shell 36. A driving wheel 351 is rotatably installed inside the shell 36. The rotating shaft of the driving wheel 351 is coaxially connected to the output shaft of the reduction motor 35. Two driven wheels 352 are symmetrically engaged on both sides of the driving wheel 351. The two driven wheels 352 are respectively connected to the drill bit 37 through their own rotating shafts to form a double drill bit 37 structure, which can perform synchronous drilling operations on both ends of the stop valve body at the same time to ensure processing efficiency and hole position consistency.

[0040] To prevent the drill bit 37 from being damaged due to overheating during high-speed rotation, a water outlet pipe 38 is fixed to the top of the housing 36. The water outlet pipe 38 is connected to the coolant supply system through an external pipeline. The coolant supply system includes a liquid storage tank, a water pump and a filter device. The water pump transports the coolant to the water outlet pipe 38 and evenly sprays it to the processing area of ​​the drill bit 37 through the water outlet pipe 38, which plays a role in cooling, lubricating and chip removal, thereby extending the tool life and improving the drilling quality.

[0041] A valve body positioning mechanism 4 is provided in the middle of the drilling table 1 between the two sets of mobile drilling mechanisms 3. This mechanism is used to stably secure the stop valve to be processed in a predetermined position. The valve body positioning mechanism 4 includes a sump 41 provided on the drilling table 1. The sump 41 collects the coolant. A filter plate 43 is provided above the sump 41. A discharge plate 46 is provided above the filter plate 43. A chute 47 is provided on the edge of the discharge plate 46. Positioning plates 48 are slidably mounted at each end of the chute 47. The bottom of the positioning plate 48 is elastically connected to the inner wall of the chute 47 by a spring 471, allowing the positioning plate 48 to automatically conform to the outer wall of the valve body, achieving adaptive clamping. A hole 481 is provided in the center of the positioning plate 48 for the drill bit 37 to pass through, and a locking slot 49 is provided on the outer side of the positioning plate 48 for locking with the subsequent push plate 72.

[0042] A plurality of filter holes 42 are provided at the bottom of the sewage trough 41 for filtering out chips and impurities mixed in the coolant. A drainage cone 6 is connected below to facilitate the recovery of the coolant. Slag discharge holes 44 are also provided on both sides of the sewage trough 41 for discharging deposited waste slag. A removable sealing plate 45 is inserted into the slag discharge hole 44 for regular cleaning and maintenance.

[0043] To enhance the valve body's clamping stability, an auxiliary positioning assembly is installed on one side of the drilling platform 1. This assembly works in conjunction with the valve body positioning mechanism 4 to achieve multi-point fixation of the valve body. The auxiliary positioning assembly includes a vertical rail 5 fixed to the side of the drilling platform 1. A lifting plate 51 is slidably mounted within the vertical rail 5. One end of the lifting plate 51 is equipped with a fixed head 52 for compressing the upper end of the valve body. A screw rod 53 is installed within the vertical rail 5. The screw rod 53 is driven to rotate by the drive motor and is threadedly connected to the lifting plate 51, thereby enabling the fixed head 52 to move up and down, completing the auxiliary compression of the valve body.

[0044] At the same time, a two-way screw rod 7 is rotatably installed on the drilling table 1, and its two ends are respectively threadedly connected with push plates 72. The lower part of the push plate 72 is slidably embedded in the limit groove 8 opened in the drilling table 1. A bevel gear 2 71 is provided in the middle of the two-way screw rod 7, which meshes with the bevel gear 1 54 at the lower end of the screw rod 53, so that when the lifting plate 51 descends, the two-way screw rod 7 rotates synchronously, pushing the two push plates 72 to move toward the middle, and then cooperating with the card groove 49 on the outside of the positioning plate 48 to achieve lateral clamping of the valve body.

[0045] Specifically, a two-way screw rod 2 74 is rotatably installed on the drilling table 1, one end of which is meshed with the first gear 73 at the end of the two-way screw rod 1 7 through the second gear 75. Brushes 76 are respectively threadedly connected to both ends of the two-way screw rod 2 74. Two groups of brushes 76 are located inside the sewage tank 41. The brushes 76 are restricted by the sewage tank 41 and can move horizontally. When the two-way screw rod 1 7 rotates, it will drive the two-way screw rod 2 74 to rotate, thereby driving the two groups of brushes 76 to move toward each other and move to the middle of the sewage tank 41. When the drilling is completed and the valve body is removed, the fixed head 52 and the push plate 72 are reset, and the brushes 76 will clean the waste chips to the side of the sewage tank 41 to facilitate subsequent slag discharge.

[0046] The device also includes an integrated control system, preferably a PLC-based control unit, for coordinating the actions of the various actuators. The control system collects position information from cylinders 1 (32), 2 (34), and 3 (39) via sensors and controls their sequential movements according to a pre-set program, achieving precise control of drilling height, lateral position, and feed depth. In dual-station synchronous drilling mode, the control system compares the real-time feed speed and pressure feedback of the two sets of mobile drilling mechanisms (3) to adjust drive parameters, ensuring synchronized drilling at both ends and consistent processing.

[0047] On the other hand, the present invention also provides a method for preparing a stop valve processing drilling device, and the operating steps are as follows:

[0048] S1. Place the stop valve to be processed in the valve body positioning mechanism 4 on the drilling table 1;

[0049] S2. Use the discharge plate 46 in the valve body positioning mechanism 4, the positioning plate 48 in the chute 47, and the spring 471 to position the stop valve, and align the opening 481 on the positioning plate 48 with the predetermined drilling position;

[0050] S3. Start the motor to rotate the screw 53, causing the lifting plate 51 to descend with the fixed head 52 to fix the upper end of the valve body. At the same time, the bevel gear 1 54 and the bevel gear 2 71 are engaged, causing the bidirectional screw 1 7 to rotate, causing the two sets of push plates 72 to move toward each other. The push plates 72 push the positioning plate 48 to fit tightly against the valve body.

[0051] S4. In S3, the rotation of the bidirectional screw 1 7 drives the first gear 73 to rotate. The meshing of the first gear 73 and the second gear 75 causes the bidirectional screw 2 74 to rotate, causing the two sets of brushes 76 to move toward each other to the middle of the sewage tank 41. When the brushes 76 return to their original positions, they clean the waste to the side of the sewage tank 41.

[0052] S5. Start cylinder 1 32 to adjust the height of the base 31. Cylinder 2 34 drives the movable base 33 to move along the guide rail to the specified position. Cylinder 3 39 drives the mounting base 331 to move the movable drilling mechanism 3 close to the stop valve.

[0053] S6. The reduction motor 35 is started, driving the driving wheel 351 to rotate, and then the driven wheels 352 on both sides rotate through the gear transmission system, driving the drill bit 37 to start drilling. During the drilling process, the water outlet pipe 38 provides coolant to help cool down and remove chips.

[0054] The above are merely examples of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may be subject to various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

[0055] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A stop valve processing drilling device, comprising a drilling table (1) and a material storage box (2) on the side of the drilling table (1), characterized in that: Both sides of the upper end of the drilling platform (1) are equipped with movable drilling mechanisms (3), a valve body positioning mechanism (4) is installed on the drilling platform (1) at the middle position of the two sets of movable drilling mechanisms (3), and an auxiliary positioning component is installed on the other side of the drilling platform (1). The auxiliary positioning component cooperates with the valve body positioning mechanism (4) to clamp and assist in fixing the valve body, so that the two sets of movable drilling mechanisms (3) can synchronously perform drilling operations on the processing parts at both ends of the valve body. The valve body positioning mechanism includes a sewage tank (41) located on the drilling platform (1), the sewage tank ( A filter plate (43) is provided at the upper end of the filter plate (41), a discharge plate (46) is provided on the upper side of the filter plate (43), a chute (47) is provided on the side of the discharge plate (46), and positioning plates (48) are provided at both ends of the chute (47) for sliding. A spring (471) is connected between the lower side of the positioning plate (48) and the inner wall of the chute (47). An opening (481) having a size larger than that of the drill bit (37) is provided on the positioning plate (48), and a card slot (49) is provided on the outer side of the positioning plate (48). A bidirectional screw rod (2) is rotatably installed on the drilling table (1). 74), one end of the two-way screw rod 2 (74) is connected to the second gear (75), the second gear (75) is meshed with the first gear (73) at one end of the two-way screw rod 1 (7), and the two ends of the two-way screw rod 2 (74) are threadedly connected with brushes (76), and two sets of brushes (76) are located inside the sewage tank (41). The auxiliary positioning component includes a vertical rail (5) fixed to one side of the drilling table (1), a lifting plate (51) is slidably provided in the vertical rail (5), and a fixed head (52) is installed at one end of the lifting plate (51), and a wire is rotatably provided in the vertical rail (5). Rod (53), the screw rod (53) is driven by a motor, the screw rod (53) is threadedly connected to the lifting plate (51), a bidirectional screw rod (7) is rotatably installed on the drilling table (1), and both ends of the bidirectional screw rod (7) are threadedly connected to push plates (72), the lower side of the push plate (72) slides in the limit groove (8) opened on the drilling table (1), the middle part of the bidirectional screw rod (7) is connected to a bevel gear (71), the bevel gear (71) is meshed with the bevel gear (54) at the lower end of the screw rod (53), and the push plate (72) is engaged with the card slot (49).

2. The stop valve processing and drilling equipment according to claim 1, characterized in that: The mobile drilling mechanism includes a base (31) located at the upper end of the drilling platform (1), a guide rail is provided at the upper end of the base (31), a movable seat (33) slides on the guide rail, the movable seat (33) is driven by the second cylinder (34) to move along the guide rail, and a mounting seat (331) is provided on the upper end of the movable seat (33), the mounting seat (331) is connected to the third cylinder (39) fixed on one side of the movable seat (33), and the bottom of the drilling platform (1) is installed with the first cylinder (32), and the piston end of the first cylinder (32) passes through the drilling platform (1) and is connected to the bottom of the base (31).

3. The stop valve processing and drilling equipment according to claim 2, characterized in that: A reduction motor (35) is mounted on the upper end of the mounting seat (331), and a housing (36) is provided at one end of the reduction motor (35). A driving wheel (351) is rotatably mounted in the housing (36), and a rotating shaft of the driving wheel (351) is connected to an output shaft of the reduction motor (35). Driven wheels (352) are mounted on both sides of the housing (36), and two groups of driven wheels (352) are respectively engaged with both sides of the driving wheel (351). A drill bit (37) is mounted on the rotating shaft of the driven wheel (352).

4. The stop valve processing and drilling equipment according to claim 3 is characterized in that: A water outlet pipe (38) is fixed to the upper end of the shell (36), and the water inlet of the water outlet pipe (38) is connected to the external coolant through a pipeline.

5. The stop valve processing and drilling equipment according to claim 4, characterized in that: The bottom of the sewage trough (41) is provided with a plurality of filter holes (42), the lower side of the sewage trough (41) is connected to a drainage cone (6), and both sides of the sewage trough (41) are provided with slag discharge holes (44), and sealing plates (45) are clamped in the slag discharge holes (44).

6. A method for machining a stop valve, comprising the stop valve machining drilling equipment according to claim 5, characterized in that: The steps include: S1. Place the stop valve to be processed in the valve body positioning mechanism (4) on the drilling table (1); S2. Using the discharge plate (46) in the valve body positioning mechanism (4), the positioning plate (48) in the chute (47), and the spring (471), the stop valve is positioned so that the opening (481) on the positioning plate (48) is aligned with the predetermined drilling position; S3, start the motor to rotate the screw (53), so that the lifting plate (51) and the fixed head (52) are lowered to fix the upper end of the valve body. At the same time, the bevel gear 1 (54) and the bevel gear 2 (71) are engaged, so that the bidirectional screw 1 (7) rotates, so that the two sets of push plates (72) move toward each other, and the push plates (72) push the positioning plate (48) to fit closely with the valve body. S4. In S3, the bidirectional screw rod 1 (7) rotates to drive the first gear (73) to rotate, and the meshing of the first gear (73) and the second gear (75) causes the bidirectional screw rod 2 (74) to rotate, prompting the two sets of brushes (76) to move toward each other to the middle of the sewage tank (41), and when the brushes (76) are reset, the waste debris is cleaned to the side of the sewage tank (41); S5, start cylinder 1 (32) to adjust the height of the base (31), cylinder 2 (34) drives the movable seat (33) to move along the guide rail to the specified position, and cylinder 3 (39) drives the mounting seat (331) to move the movable drilling mechanism (3) close to the stop valve; S6. The reduction motor (35) is started, driving the driving wheel (351) to rotate, and then the driven wheels (352) on both sides are rotated through the gear transmission system, driving the drill bit (37) to start the drilling operation. During the drilling process, the water outlet pipe (38) provides coolant to help cool down and remove chips.

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