Venturi tube pressure tapping hole machining tool

Abstract

The invention belongs to the technical field of venturi tube machining, and particularly relates to a venturi tube pressure tapping machining tool which comprises a containing table, a containing sleeve rod is fixedly installed at the top of the containing table, a venturi tube fixing assembly is installed on the containing sleeve rod, and the venturi tube fixing assembly is used for punching the interior to fix a venturi tube; through cooperation of an arc block and a movable abutting block, the device can be suitable for fixing Venturi tubes with different throat inner diameters from the inner side, the adjustability enables the device to be widely applied to the Venturi tubes of various specifications, the use range of the device is greatly widened, and the applicability of the device is greatly improved; and the influence of external factors on the venturi tube can be effectively reduced by fixing from the inner side, deformation or damage of the tube body caused by external vibration or impact force is avoided, and the protective fixing mode not only prolongs the service life of the venturi tube, but also improves the reliability and safety of the whole machining process.

Description

Technical Field

[0001] The invention belongs to the technical field of venturi tube processing, in particular to a venturi tube pressure taking hole processing tool. Background Art

[0002] Venturi tubes are commonly used in industrial applications, such as in the oil, gas, chemical or water treatment industries, to measure the flow or pressure of fluids. Venturi tubes are made of precision forged metal blocks with high strength and durability. During the production process, it is usually necessary to drill pressure holes on the surface of the Venturi tube for pressure or temperature measurement.

[0003] A Chinese patent document with announcement number CN206464577U discloses a precision forged large-diameter venturi tube pressure-taking hole processing tool, comprising a left positioning clamp and a right positioning clamp, wherein a positioning plate is welded to the upper ends of the left positioning clamp and the right positioning clamp, a positioning hole is vertically arranged in the middle of the positioning plate, an internal thread is arranged on the inner wall surface of the positioning hole, and a positioning sleeve is connected to the internal thread of the positioning hole; a rubber buffer pad is fixedly bonded to the lower end surface of the positioning plate. With respect to the above technical solution, the following defects still exist: the prior art usually clamps and fixes the Venturi tube from the outside, and clamping and fixing from the outside often requires the use of auxiliary tools such as fasteners or clamps. In the process of applying pressure, these tools may cause scratches, dents, or even deformation on the surface of the Venturi tube due to improper force control or unreasonable fixing methods. These damages will not only affect the appearance of the Venturi tube, but more importantly, may have an adverse effect on the flow characteristics of the fluid inside it, thereby affecting the accuracy of the measurement. In addition, clamping and fixing from the outside often limits the operating space of the drilling machine, making the drilling process complicated and difficult to accurately control.

[0004] To this end, the present invention provides a venturi tube pressure taking hole processing tool. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a Venturi tube pressure hole processing tooling of the present invention comprises a placement table, a placement sleeve rod is fixedly installed on the top of the placement table, a Venturi tube fixing assembly is installed on the placement sleeve rod, and the Venturi tube fixing assembly is used to punch the internal fixed Venturi tube;

[0007] The venturi tube fixing assembly comprises a fixing ring, an adjusting slider is fixedly installed on the inner side of the fixing ring, an inner threaded ring is fixedly installed on the end of the adjusting slider away from the fixing ring, an arc block is movably installed inside the inner threaded ring, a connecting ring is fixedly installed on the top and bottom of the arc block, a telescopic rod 1 is fixedly installed on the top of the connecting ring installed on the top of the arc block, a bending slide rod is fixedly installed on the end of the telescopic rod 1 away from the connecting ring, a hand-turning ring is fixedly installed on the bending slide rod and one end of the telescopic rod 1 there, four moving blocks are slidably installed inside the fixing ring, a resistance block is fixedly installed on one end of the four moving blocks, and one end of the four moving blocks away from the resistance block is slidably installed on the inner side of the adjusting slider and the inner threaded ring, and contacts with the outer side of the arc block.

[0008] Preferably, an adjustment arc groove is provided on the outer side of the top of the placement sleeve rod, the bent slide rod is slidably installed on the inner side of the adjustment arc groove, the hand-turning ring is movably sleeved on the outer side of the top of the placement sleeve rod, a top arc groove is provided on the top of the internal threaded ring, and one end of the telescopic rod connected to the connecting ring is movably installed inside the top arc groove.

[0009] Preferably, a circular groove is formed at one end of the resistance block away from the movable resistance block.

[0010] Preferably, a spring groove is opened inside the fixing ring, a return spring is installed inside the spring groove, spring pressure plates are fixedly installed on both sides of the movable stop block, one end of the return spring is fixedly connected to one side of the spring pressure plate, and the side of the return spring away from the spring pressure plate is fixedly connected to the inner side of the through hole.

[0011] Preferably, a threaded rod is rotatably installed inside the top of the placement sleeve rod, a hand handle is fixedly installed on the top of the threaded rod, a threaded hole is opened inside the internal threaded ring, the internal threaded ring is threadedly connected to the outside of the threaded rod through the threaded hole, four adjustment grooves are opened on the outside of the placement sleeve rod, and the adjustment slider is slidably installed on the inner side of the adjustment groove.

[0012] Preferably, a chip cleaning assembly is installed inside the placing sleeve rod, and the chip cleaning assembly includes a piston cylinder and an arc-shaped rotating plate, the bottom of the piston cylinder is fixedly installed on the top of the placing table, the air inlet of the piston cylinder penetrates the placing table and extends to the bottom of the placing table, the outside of the bottom end of the piston cylinder is connected with four air guide tubes, the inside of the air guide tubes and the inside of the air inlet of the piston cylinder are both equipped with one-way valves, a piston rod is movably installed inside the piston cylinder, a circular block is fixedly installed on the top of the piston rod, a movable guide block is fixedly installed on the outside of the circular block, a movable guide groove is opened on one side of the arc-shaped rotating plate, the end of the movable guide block away from the circular block is slidably installed in the movable guide groove, and a telescopic rod 2 is fixedly installed on the top of the arc-shaped rotating plate.

[0013] Preferably, one end of the telescopic rod 2 away from the arc-shaped rotating plate is fixedly connected to the bottom of the connecting ring installed at the bottom of the arc block, a bottom arc groove is provided at the bottom of the internal threaded ring, and the connection between the telescopic rod 2 and the connecting ring is movably installed on the inner side of the bottom arc groove, a movable slide groove is provided on the inner side of the placement sleeve rod, and a movable slider is fixedly installed on the side of the arc-shaped rotating plate away from the movable guide groove, and one end of the movable slider away from the arc-shaped rotating plate is movably installed on the inner side of the movable slide groove.

[0014] Preferably, a through hole is provided inside the adjusting slider, and the end of the air guide tube away from the piston cylinder passes through the through hole inside the adjusting slider and is connected with the interior of the movable block. An injection hole is provided inside the side of the movable block on which the resistance block is installed, and the center position of the injection hole is the same as the center position of the circular groove.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The venturi tube pressure-taking hole processing tooling described in the present invention can be used to fix venturi tubes with different throat inner diameters from the inside through the cooperation of the provided arc block and the movable stop block. This adjustability enables the device to be widely used in venturi tubes of various specifications, greatly improving its scope of use and applicability. In addition, fixing from the inside can effectively reduce the impact of external factors on the venturi tube, and avoid deformation or damage of the tube body caused by external vibration or impact force. This protective fixing method not only extends the service life of the venturi tube, but also improves the reliability and safety of the entire processing process.

[0017] 2. A venturi tube pressure taking hole processing tooling described in the present invention can drive the arc rotating plate to rotate forwardly through the connecting ring and the telescopic rod two by the arc block to rotate forward, and the movable guide block can move along the movable guide groove, so that the piston rod moves upward inside the piston cylinder, thereby pumping external gas into the piston cylinder, and when the arc block is reversed to release the movable resistance block and the resistance block from the venturi tube, the arc rotating plate can be driven to reverse by the connecting ring and the telescopic rod two at the bottom of the arc block, and with the cooperation of the movable guide groove and the movable guide block, the piston rod can move downward inside the piston cylinder, thereby discharging the gas inside the piston cylinder into the interior of the movable resistance block through the air guide pipe, and then spraying it out through the air jet hole, so as to clean the pressure taking hole after drilling, ensure that there is no residual debris in the internal environment of the pressure taking hole, and further widen the patency of the channel, enhance its circulation efficiency, and lay a solid foundation for subsequent pressure measurement, fluid injection or other related operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0021] Figure 3 It is a schematic diagram of a local three-dimensional structure in the present invention;

[0022] Figure 4 It is a schematic diagram of the partial appearance structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixing ring in the present invention;

[0024] Figure 6 It is a bottom view structural diagram of the fixing ring in the present invention;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the fixing ring in the present invention;

[0026] In the figure: 1. placing table; 2. placing sleeve rod; 3. fixing ring; 4. threaded rod; 5. hand-turning handle; 6. hand-turning ring; 7. adjusting arc groove; 8. adjusting slide groove; 9. abutment block; 10. piston cylinder; 11. circular block; 12. arc-shaped rotating plate; 13. moving slide groove; 14. bending slide rod; 15. telescopic rod one; 16. internal thread ring; 17. top arc groove; 18. adjusting slider; 19. jet hole; 20. moving abutment block; 21. telescopic rod two; 22. air guide tube; 23. moving guide groove; 24. moving guide block; 25. piston rod; 26. moving slider; 27. circular groove; 28. bottom arc groove; 29. ​​threaded hole; 30. through hole; 31. spring pressure plate; 32. reset spring; 33. spring groove; 34. arc block; 35. connecting ring. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] like Figures 1 to 7 As shown, a Venturi tube pressure hole processing tooling according to an embodiment of the present invention comprises a placement table 1, a placement sleeve rod 2 is fixedly installed on the top of the placement table 1, a Venturi tube fixing assembly is installed on the placement sleeve rod 2, and the Venturi tube fixing assembly is used to punch the internal fixed Venturi tube;

[0029] The venturi tube fixing assembly includes a fixing ring 3, an adjusting slider 18 is fixedly installed on the inner side of the fixing ring 3, an internal threaded ring 16 is fixedly installed on the end of the adjusting slider 18 away from the fixing ring 3, an arc block 34 is movably installed inside the internal threaded ring 16, a connecting ring 35 is fixedly installed on the top and bottom of the arc block 34, a telescopic rod 15 is fixedly installed on the top of the connecting ring 35 installed on the top of the arc block 34, a top arc groove 17 is opened on the top of the internal threaded ring 16, one end of the telescopic rod 15 connected to the connecting ring 35 is movably installed inside the top arc groove 17, a bending slide rod 14 is fixedly installed on the end of the telescopic rod 15 away from the connecting ring 35, and a hand-turning ring 6 is fixedly installed on one end of the bending slide rod 14 and the telescopic rod 15 there. An adjusting arc groove 7 is provided on the outer side of the top of the placement sleeve rod 2, and the bending slide rod 14 is slidably installed on the inner side of the adjusting arc groove 7. The hand rotating ring 6 is movably sleeved on the outer side of the top of the placement sleeve rod 2, and four movable abutments 20 are slidably installed inside the fixed ring 3. One end of the four movable abutments 20 is fixedly installed with a resistance block 9, and the ends of the four movable abutments 20 away from the resistance block 9 are slidably installed on the inner side of the adjusting slider 18 and the internal threaded ring 16, and are in contact with the outer side of the arc block 34; when working, the Venturi tube can be sleeved on the outer side of the placement sleeve rod 2 first, and the bottom of the Venturi tube can be in contact with the top of the placement table 1, and then the hand rotating ring 6 can be manually rotated. After the hand rotating ring 6 rotates, the bending slide rod 14 is driven to rotate, thereby driving the telescopic rod to move. 15 is rotated, and the connecting ring 35 at the top of the arc block 34 is rotated, so that the arc block 34 is rotated inside the internal threaded ring 16, so that the arc block 34 pushes the movable block 20 to the outside of the fixed ring 3, so that the four abutment blocks 9 abut against the throat cylindrical area of ​​the Venturi tube, and under the abutment of the four abutment blocks 9, the Venturi tube can be moved on the top of the placement table 1, and the Venturi tube is effectively constrained and positioned. With the gradual adjustment of the abutment blocks 9, the Venturi tube gradually moves to the ideal position, and finally its center is accurately located on the same vertical line as the center of the placement sleeve rod 2, which provides great convenience for the subsequent pressure-taking hole drilling work, and the drilling operation can be carried out more accurately, avoiding the problem of the position of the Venturi tube. Drilling deviation or error caused by instability. At the same time, this positioning and fixing method also improves work efficiency, reduces the time and energy wasted due to repeated adjustment of the position of the Venturi tube, and through the cooperation of the set arc block 34 and the movable stop block 20, it can be suitable for fixing the Venturi tube with different throat inner diameters from the inside. This adjustability enables the device to be widely used in Venturi tubes of various specifications, greatly improving its scope of use and applicability. Fixing from the inside can also effectively reduce the impact of external factors on the Venturi tube, and avoid deformation or damage of the tube body caused by external vibration or impact force. This protective fixing method not only extends the service life of the Venturi tube, but also improves the reliability and safety of the entire processing process.

[0030] like Figures 1 to 7 As shown, a circular groove 27 is provided at one end of the abutment block 9 away from the movable abutment block 20; during operation, the circular groove 27 can prevent the drill bit from being affected when drilling a pressure hole at the throat of the venturi tube using external drilling equipment, thereby ensuring the normal operation of the drilling.

[0031] like Figures 1 to 7 As shown, a spring groove 33 is provided inside the fixing ring 3, and a return spring 32 is installed inside the spring groove 33. Spring pressure plates 31 are fixedly installed on both sides of the movable stop block 20. One end of the return spring 32 is fixedly connected to one side of the spring pressure plate 31, and the side of the return spring 32 away from the spring pressure plate 31 is fixedly connected to the inner side of the through hole 30. When working, when the arc block 34 presses the movable stop block 20, the movable stop block 20 moves inside the fixing ring 3, which can drive the spring pressure plate 31 to move inside the spring groove 33, and the return spring 31 is fixedly connected to the movable stop block 20 through the telescopic rod 21. The positioning spring 32 is squeezed. When the pressure-taking hole of the Venturi tube is drilled, the hand ring 6 can be rotated in the opposite direction. The weapon drives the arc block 34 to rotate in the opposite direction inside the internal threaded ring 16 through the bending slide rod 14, the telescopic rod 15, and the connecting ring 35. Under the action of the restoring elastic force of the reset spring 32, the movable stop block 20 can be moved inside the fixed ring 3 to the side close to the arc block 34, so that one end of the movable stop block 20 is always in contact with the outer side of the arc block 34, and the contact block 9 is separated from the inner side of the Venturi tube, so as to facilitate the release of the processed Venturi tube.

[0032] like Figures 1 to 7 As shown, a threaded rod 4 is rotatably installed inside the top of the placement sleeve rod 2, and a hand-turned handle 5 is fixedly installed on the top of the threaded rod 4. A threaded hole 29 is provided inside the internal threaded ring 16, and the internal threaded ring 16 is threadedly connected to the outside of the threaded rod 4 through the threaded hole 29. Four adjusting grooves 8 are provided on the outside of the placement sleeve rod 2, and the adjusting slider 18 is slidably installed on the inner side of the adjusting groove 8; when working, the hand-turned handle 5 can be rotated to drive the threaded rod 4 to rotate, and with the cooperation of the adjusting groove 8 and the adjusting slider 18, the internal threaded ring 16 can move up and down on the outside of the threaded rod 4, thereby driving the fixing ring 3 to move up and down on the outside of the placement sleeve rod 2, so as to adjust the position of the fixing ring 3, which is suitable for Venturi tubes of different heights and the use effect of the lifting device.

[0033] like Figures 1 to 7As shown, a chip cleaning assembly is installed inside the placement sleeve 2, and the chip cleaning assembly includes a piston cylinder 10 and an arc-shaped rotating plate 12. The bottom of the piston cylinder 10 is fixedly installed on the top of the placement table 1, and the air inlet of the piston cylinder 10 penetrates the placement table 1 and extends to the bottom of the placement table 1. The outside of the bottom end of the piston cylinder 10 is connected with four air guide pipes 22, and the inside of the air guide pipes 22 and the inside of the air inlet of the piston cylinder 10 are both installed with one-way valves. A piston rod 25 is movably installed inside the piston cylinder 10, and a circular block 11 is fixedly installed on the top of the piston rod 25. A movable guide block 24 is fixedly installed on the outside of the circular block 11. A movable guide groove 23 is opened on one side of the arc-shaped rotating plate 12, and the end of the movable guide block 24 away from the circular block 11 is slidably installed in the movable guide groove 23 , a telescopic rod 21 is fixedly installed on the top of the arc-shaped rotating plate 12, and one end of the telescopic rod 21 away from the arc-shaped rotating plate 12 is fixedly connected to the bottom of the connecting ring 35 installed at the bottom of the arc block 34. A bottom arc groove 28 is provided at the bottom of the internal threaded ring 16, and the connection between the telescopic rod 21 and the connecting ring 35 is movably installed on the inner side of the bottom arc groove 28. A moving slide groove 13 is provided on the inner side of the placement sleeve rod 2, and a moving slider 26 is fixedly installed on the side of the arc-shaped rotating plate 12 away from the moving guide groove 23. One end of the moving slider 26 away from the arc-shaped rotating plate 12 is movably installed on the inner side of the moving slide groove 13. A through hole 30 is provided inside the adjusting slider 18, and one end of the air guide pipe 22 away from the piston cylinder 10 passes through the through hole inside the adjusting slider 18. The hole 30 is connected with the interior of the movable stop block 20. The movable stop block 20 is provided with an injection hole 19 on one side of the stop block 9. The center of the injection hole 19 is the same as the center of the circular groove 27. When working, the arc block 34 rotates forward to push the movable stop block 20 out of the inner side of the fixed ring 3, and fixes the throat of the venturi tube through the stop block 9. The connecting ring 35 at the bottom of the arc block 34 can be driven to rotate forward, and the arc rotating plate 12 can be driven to rotate forward through the telescopic rod 21, and the movable guide block 24 can move along the movable guide groove 23, so that the piston rod 25 moves upward inside the piston cylinder 10, thereby pumping the external gas into the interior of the piston cylinder 10, and When the arc block 34 reverses to release the movable stop block 20 and the contact block 9 from the venturi tube, the arc rotating plate 12 can be driven to reverse through the connecting ring 35 at the bottom of the arc block 34 and the telescopic rod 21, and the piston rod 25 can move downward inside the piston cylinder 10 with the cooperation of the movable guide groove 23 and the movable guide block 24, so that the gas inside the piston cylinder 10 is discharged into the interior of the movable stop block 20 through the air guide pipe 22, and then ejected through the jet hole 19, so as to clean the pressure taking hole after drilling, ensure that there is no residual debris in the internal environment of the pressure taking hole, and further widen the patency of the channel, enhance its circulation efficiency, and lay a solid foundation for subsequent pressure measurement, fluid injection or other related operations.

[0034] Working principle: First, the hand handle 5 can be rotated to drive the threaded rod 4 to rotate, and the internal threaded ring 16 can be moved up and down on the outside of the threaded rod 4 with the cooperation of the adjusting slide groove 8 and the adjusting slider 18, thereby driving the fixed ring 3 to move up and down on the outside of the placement sleeve rod 2, so as to adjust the position of the fixed ring 3, which is suitable for Venturi tubes of different heights. Then, the Venturi tube can be sleeved on the outside of the placement sleeve rod 2, and the bottom of the Venturi tube can be in contact with the top of the placement table 1, and then the hand ring 6 can be manually rotated. After the hand ring 6 rotates, it drives the bending slide rod 14 to rotate. Thereby, the telescopic rod 15 is driven to rotate, and the connecting ring 35 at the top of the arc block 34 is rotated, so that the arc block 34 rotates inside the internal threaded ring 16, so that the arc block 34 pushes the movable block 20 to the outside of the fixed ring 3, so that the four resistance blocks 9 are resisted in the throat cylindrical area of ​​the Venturi tube, and the Venturi tube can be moved on the top of the placement table 1 under the resistance of the four resistance blocks 9, and the Venturi tube is effectively constrained and positioned. With the gradual adjustment of the resistance blocks 9, the Venturi tube gradually moves to the ideal position, and finally its center is aligned with the center of the placement sleeve rod 2. The centers of the two pressure holes are precisely located on the same vertical line, which greatly facilitates the subsequent drilling of the pressure-taking holes. When the arc block 34 rotates forward to push the movable stop block 20 out of the inner side of the fixed ring 3 and fix the throat of the venturi tube through the stop block 9, the connecting ring 35 at the bottom of the arc block 34 can be driven to rotate forward, and the arc rotating plate 12 can be driven to rotate forward through the telescopic rod 21, and the movable guide block 24 can move along the movable guide groove 23, so that the piston rod 25 moves upward inside the piston cylinder 10, thereby pumping the external gas into the piston cylinder 10. , and when the arc block 34 is reversed to release the venturi tube by the movable stop block 20 and the stop block 9, the arc rotating plate 12 can be driven to reverse by the connecting ring 35 and the telescopic rod 21 at the bottom of the arc block 34, and the piston rod 25 can be moved downward inside the piston cylinder 10 under the cooperation of the movable guide groove 23 and the movable guide block 24, so that the gas inside the piston cylinder 10 is discharged into the inside of the movable stop block 20 through the air guide pipe 22, and then ejected through the jet hole 19, so as to clean the pressure taking hole after drilling, and ensure that there is no residual debris in the internal environment of the pressure taking hole.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A Venturi tube pressure hole processing tool, characterized in that: It comprises a placement platform (1), a placement sleeve rod (2) is fixedly installed on the top of the placement platform (1), a venturi tube fixing assembly is installed on the placement sleeve rod (2), and the venturi tube fixing assembly is used to flush the internal fixed venturi tube; The venturi tube fixing assembly comprises a fixing ring (3), an adjusting slider (18) is fixedly installed on the inner side of the fixing ring (3), an inner thread ring (16) is fixedly installed on the end of the adjusting slider (18) away from the fixing ring (3), an arc block (34) is movably installed inside the inner thread ring (16), a connecting ring (35) is fixedly installed on the top and bottom of the arc block (34), a telescopic rod (15) is fixedly installed on the top of the connecting ring (35) installed on the top of the arc block (34), and the telescopic rod (15) is remote from the fixing ring (3). A bending slide bar (14) is fixedly installed at one end away from the connecting ring (35), and a hand ring (6) is fixedly installed at one end of the bending slide bar (14) and the telescopic rod (15). Four movable blocks (20) are slidably installed inside the fixed ring (3), and a resistance block (9) is fixedly installed at one end of the four movable blocks (20). The ends of the four movable blocks (20) away from the resistance block (9) are slidably installed on the inner side of the adjusting slider (18) and the internal threaded ring (16), and are in contact with the outer side of the arc block (34).

2. A Venturi tube pressure-taking hole processing tool according to claim 1, characterized in that: The outer side of the top of the placement sleeve rod (2) is provided with an adjusting arc groove (7), the bent slide rod (14) is slidably mounted on the inner side of the adjusting arc groove (7), the hand-turning ring (6) is movably sleeved on the outer side of the top of the placement sleeve rod (2), the top of the internal thread ring (16) is provided with a top arc groove (17), and one end of the telescopic rod (15) connected to the connecting ring (35) is movably mounted inside the top arc groove (17).

3. A Venturi tube pressure-taking hole processing tool according to claim 2, characterized in that: A circular groove (27) is formed at one end of the resisting block (9) away from the movable resisting block (20).

4. A Venturi tube pressure-taking hole processing tool according to claim 3, characterized in that: A spring groove (33) is provided inside the fixing ring (3), a return spring (32) is installed inside the spring groove (33), spring pressure plates (31) are fixedly installed on both sides of the movable stop block (20), one end of the return spring (32) is fixedly connected to one side of the spring pressure plate (31), and the side of the return spring (32) away from the spring pressure plate (31) is fixedly connected to the inner side of the through hole (30).

5. A Venturi tube pressure-taking hole processing tool according to claim 4, characterized in that: A threaded rod (4) is rotatably mounted inside the top of the placement sleeve rod (2), a hand handle (5) is fixedly mounted on the top of the threaded rod (4), a threaded hole (29) is provided inside the internal threaded ring (16), the internal threaded ring (16) is threadedly connected to the outside of the threaded rod (4) through the threaded hole (29), four adjustment slots (8) are provided on the outside of the placement sleeve rod (2), and the adjustment slider (18) is slidably mounted on the inside of the adjustment slot (8).

6. A Venturi tube pressure-taking hole processing tool according to claim 5, characterized in that: A chip cleaning assembly is installed inside the placement sleeve rod (2), and the chip cleaning assembly includes a piston cylinder (10) and an arc-shaped rotating plate (12). The bottom of the piston cylinder (10) is fixedly installed on the top of the placement table (1). The air inlet of the piston cylinder (10) penetrates the placement table (1) and extends to the bottom of the placement table (1). The outer side of the bottom end of the piston cylinder (10) is connected to four air guide pipes (22). The inside of the air guide pipes (22) and the inside of the air inlet of the piston cylinder (10) are both installed with one-way valves. A piston rod (25) is movably installed inside the piston cylinder (10), a circular block (11) is fixedly installed on the top of the piston rod (25), a movable guide block (24) is fixedly installed on the outer side of the circular block (11), a movable guide groove (23) is opened on one side of the arc-shaped rotating plate (12), and one end of the movable guide block (24) away from the circular block (11) is slidably installed inside the movable guide groove (23), and a telescopic rod 2 (21) is fixedly installed on the top of the arc-shaped rotating plate (12).

7. A Venturi tube pressure-taking hole processing tool according to claim 6, characterized in that: One end of the telescopic rod (21) away from the arc-shaped rotating plate (12) is fixedly connected to the bottom of a connecting ring (35) installed at the bottom of the arc block (34); a bottom arc groove (28) is provided at the bottom of the internal thread ring (16); a connection between the telescopic rod (21) and the connecting ring (35) is movably installed on the inner side of the bottom arc groove (28); a moving slide groove (13) is provided on the inner side of the placement sleeve rod (2); a moving slider (26) is fixedly installed on one side of the arc-shaped rotating plate (12) away from the moving guide groove (23); and one end of the moving slider (26) away from the arc-shaped rotating plate (12) is movably installed on the inner side of the moving slide groove (13).

8. A Venturi tube pressure-taking hole processing tool according to claim 7, characterized in that: The adjusting slider (18) has a through hole (30) formed inside, and the end of the air guide tube (22) away from the piston cylinder (10) passes through the through hole (30) inside the adjusting slider (18) and is connected to the inside of the movable stop block (20). The movable stop block (20) has a jet hole (19) formed inside the side where the stop block (9) is installed, and the center position of the jet hole (19) is the same as the center position of the circular groove (27).

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