Adjustable flushing spray head for steel pipe pickling

Abstract

The invention relates to the technical field of steel pipe cleaning, in particular to an adjustable flushing nozzle for steel pipe pickling, which comprises a base plate, a rack is arranged at the top of the base plate, a placing rack is arranged on one side of the rack, flushing pipes are arranged on two sides of the top of the rack through adjusting mechanisms, and the adjusting mechanisms are used for adjusting the bending angle of a corrugated pipe. A nozzle assembly is arranged at one end of the flushing pipe, the other end of the flushing pipe is connected with external flushing fluid, the nozzle assembly comprises a corrugated pipe, a first sleeve, a second sleeve, a water outlet nozzle, a transition pipe and an adjusting structure, the first sleeve and the second sleeve are installed at the two ends of the corrugated pipe, the first sleeve is installed between the corrugated pipe and the flushing pipe, and the adjusting structure is installed between the two ends of the corrugated pipe. According to the steel pipe inner wall flushing device, the inner wall of a steel pipe is flushed, the situation that flushing fluid splashes and harms operators is prevented, and meanwhile the using amount of the flushing fluid is saved.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe cleaning, in particular to an adjustable flushing nozzle for steel pipe pickling. Background Art

[0002] Steel pipe pickling is to remove impurities such as scale, rust, oil and so on on the surface of steel pipe by pickling to improve the surface quality and service life of steel pipe. During the pickling process, the surface of stainless steel pipe will be in contact with acidic solution and some acidic substances may remain. If these residues are not removed in time, they may cause corrosion to the surface of stainless steel pipe, affecting its corrosion resistance and appearance. Flushing with flushing liquid can effectively remove these residues and ensure the surface cleanliness of stainless steel pipe. In addition, the acidic solution used in the pickling process may contain various chemical agents. Flushing with flushing liquid can stop or slow down these chemical reactions and avoid further reactions, thereby protecting stainless steel pipe from damage.

[0003] After pickling, the existing steel pipe is generally washed by hand-held water pipe nozzles to wash the acid solution remaining on the steel pipe wall. The cleaning of the outer wall is generally more convenient. Although the above-mentioned hand-held cleaning is a common cleaning method, there are indeed some disadvantages when washing the inner wall of the steel pipe, as follows: (1) The cleaning effect is limited. Manual flushing may not guarantee that all areas are evenly and fully flushed, especially when the shape and size of stainless steel pipe fittings are large and non-uniform. Manual flushing is difficult to reach all corners inside the steel pipe, which can easily lead to poor cleaning effect. In addition, it is difficult to stably control the flushing direction of the water nozzle by manual hand-holding.

[0004] (2) Low work efficiency. Manual flushing requires a lot of time and manpower. Especially when a large number of pipes need to be processed, the work efficiency will be significantly reduced, which not only increases costs but may also affect production progress.

[0005] (3) The safety risk is high. During the manual flushing process, the staff needs to hold the water pipe nozzle to operate, which increases the difficulty of operation and safety risks. It may cause the acidic solution on the surface of the stainless steel pipe to splash onto the flushing personnel and cause injury.

[0006] (4) Difficult to standardize. The cleaning effect and quality of manual flushing often depend on the skills and experience of the operator. Different operators may use different flushing methods and strengths, resulting in inconsistent cleaning effects and difficulty in meeting standardization requirements.

[0007] Therefore, it is necessary to design a steel pipe pickling flushing nozzle that can stably flush the inner wall of the steel pipe. Summary of the invention

[0008] In response to the above problems, the present application provides an adjustable flushing nozzle for pickling of steel pipes, which solves the problems mentioned in the above background technology that the flushing effect of the inner wall of the steel pipe after pickling is not ideal and the flushing takes a long time, and prevents the problem of splashing of flushing liquid during the flushing process and causing harm.

[0009] The technical solution of the present invention is: an adjustable flushing nozzle for pickling of steel pipes, comprising a base plate, a frame is arranged on the top of the base plate, a placing frame is arranged on one side of the frame, flushing pipes are arranged on both sides of the top of the frame through an adjustment mechanism, a nozzle assembly is arranged at one end of the flushing pipe, and the other end is connected to an external flushing liquid, the nozzle assembly comprises a bellows, a first sleeve, a second sleeve, a water outlet nozzle, a transition pipe and an adjustment structure, the first sleeve and the second sleeve are installed at both ends of the bellows, the first sleeve is installed between the bellows and the flushing pipe, the adjustment structure is installed between the two ends of the bellows, the transition pipe is installed at the bottom of the second sleeve, a steel pipe internal tightening mechanism is arranged between the transition pipe and the bellows, and the water outlet nozzle is arranged at the bottom of the transition pipe, wherein: An adjustment structure, which is equipped to adjust the bending angle of the corrugated pipe, so as to facilitate the flushing operation of steel pipes of different lengths and inclinations; The steel pipe inner tightening mechanism is assembled to clamp the transition pipe on the inner wall of the steel pipe to position the water outlet nozzle.

[0010] Preferably, the adjustment structure includes a rotating rod, an adjusting shaft, a connecting plate, a rotating sleeve, a telescopic rod, a first drive motor and a fixed ring. The first drive motor is installed on two opposite sides of the outer wall of the first sleeve. The fixed ring is installed on the output end of the first drive motor, and one end of the rotating rod is connected to the fixed ring. The adjusting shaft is installed between the other ends of the rotating rods. The rotating sleeve is rotatably clamped at both ends of the adjusting shaft. One end of the telescopic rod is installed on the rotating sleeve, and the other end is installed on both sides of the second sleeve.

[0011] Preferably, a connecting plate is installed between the two ends of the adjusting shaft, the bottom of the connecting plate is not connected to the rotating ring, and one end of the rotating rod away from the fixing ring is fixedly connected to the connecting plate.

[0012] Preferably, the steel pipe internal tightening mechanism includes a bidirectional screw, an adjusting rod, an adjusting wheel, an extrusion plate and a driving mechanism. The cross-section of the outer wall of the transition tube is I-shaped, and the bidirectional screw is circumferentially arranged along the outer wall of the transition tube. The driving mechanism is arranged between the bidirectional screw and the second sleeve. The adjusting wheel is threadedly sleeved on both ends of the bidirectional screw, and the adjusting rods are respectively hinged on the adjusting wheels. The extrusion plate is installed between the other ends of the adjusting rods, and a mounting seat is fixed at the joint between the extrusion plate and the adjusting rod, and the adjusting rod and the mounting seat are both hinged.

[0013] Preferably, the extrusion plate is an arc-shaped plate, and support rods are installed on both sides of the extrusion plate, the support rods are telescopic column structures, and rubber pads are bonded to the outer side walls of the extrusion plate.

[0014] Preferably, the driving mechanism includes a second driving motor, a driving ring, a rotating gear, a gasket, a driven ring and a rotating ring. The second driving motor is installed on one side of the second sleeve, the driving ring is installed on the output end of the second driving motor, and the driving ring extends out of the fixed tube, a base ring is installed on the top of the transition tube, the rotating ring is rotatably connected to the outside of the base ring, and a gasket is installed on the top of the rotating ring, and the driving ring and the gasket are meshed with bevel teeth, the driven ring is installed at the bottom of the outer side wall of the rotating ring, and a gear ring is installed on the inner side wall of the driven ring, the rotating gear is installed on the top of the bidirectional screw, and the rotating gear is meshed with the driven ring.

[0015] Preferably, the anti-slip ring is fixedly connected to the inner wall of the rotating ring, so that the rotating ring is rotatably clamped on the outer wall of the top of the transition pipe through the anti-slip ring.

[0016] Preferably, the width of the extrusion plate is the same as the height of the bidirectional screw.

[0017] Preferably, the placement rack includes a base plate, a pallet, support columns and a back plate, the base plate is installed on one side of the base plate, the pallet is slidably arranged on the base plate, the support columns are installed on both sides of the base plate, the back plate is installed between the tops of the support columns, and a plurality of slots are provided on the side of the back plate facing away from the frame.

[0018] Preferably, the slot is an arc slot, and the support plate is an L-shaped plate, and a plurality of limiting slots are formed on the side wall of the vertical end of the support plate along the extension direction, and the positions of the limiting slots correspond to the positions of the slot.

[0019] The beneficial effects of the present invention are as follows: (1) The adjustable flushing nozzle for pickling of steel pipes described in the present invention facilitates the oblique placement of steel pipes of different sizes by means of a support plate, a support column and a backing plate arranged on a placement rack. Then, by adjusting the first drive motor, the rotating rod drives the position of the adjustment shaft and the telescopic rod to change, so as to adjust the position of the water outlet nozzle, thereby realizing targeted spraying of the inner wall of the steel pipe. Compared with the prior art, the flushing time and direction of the steel pipe can be accurately controlled, and the operation is convenient, the splashing of the cleaning liquid during flushing is reduced, the cleaning effect is improved, the degree of automation is improved, the risk of manual flushing is reduced, and the flushing effect can be standardized, reducing the influence of human factors.

[0020] (2) The adjustable flushing nozzle for pickling of steel pipes described in the present invention rotates the driving ring through the second driving motor, thereby driving the gasket ring, the rotating ring, the driven ring and the gear ring to rotate, and finally driving the rotating gear and the bidirectional screw to rotate, so as to adjust the position of the adjusting wheel on the bidirectional screw, so as to achieve the purpose of expanding and recovering the position of the extrusion plate on the transition pipe, thereby driving the water outlet nozzle to be clamped on the inner wall of the steel pipe, facilitating the flushing operation. Compared with the prior art, it is not only convenient to fix the water outlet nozzle, but also can prevent the flushing liquid from splashing during the flushing process. In addition, the fixed water outlet nozzle can make the flushing liquid flow quickly during spraying, which is convenient for removing the pickling residues attached to the inner wall of the steel pipe and improving the flushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 A schematic diagram of the three-dimensional structure provided by the present invention; Figure 2 A schematic diagram of the structure of the nozzle assembly provided by the present invention; Figure 3 A schematic diagram of the structure of an extruded plate provided by the present invention; Figure 4 A schematic diagram of the regulating structure provided by the present invention; Figure 5 A schematic diagram of the structure of a second drive motor provided by the present invention; Figure 6 for Figure 2 The enlarged structural diagram at A in the middle; Figure 7 A schematic diagram of the side structure of the transition tube provided by the present invention; Figure 8 for Figure 7 Enlarged structural diagram at B in the middle.

[0023] In the figure: 1. base plate; 2. frame; 3. placement rack; 4. flushing pipe; 5. nozzle assembly; 6. first sleeve; 7. bellows; 8. second sleeve; 9. water outlet nozzle; 10. extrusion plate; 11. adjustment structure; 12. transition pipe; 13. support rod; 14. two-way screw; 15. adjustment rod; 16. adjustment wheel; 17. first drive motor; 18. rotating rod; 19. adjustment shaft; 20. connecting plate; 21. rotating sleeve ring; 22. telescopic rod; 23. second drive motor; 24. driving ring; 25. fixing ring; 26. fixing pipe; 27. gasket; 28. driven ring; 29. ​​rotating ring; 30. rotating gear; 31. base ring; 32. anti-slip ring; 33. gear ring; 34. mounting seat; 35. bottom plate; 36. support plate; 37. support column; 38. backing plate. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0025] Example: Figure 1-Figure 8 As shown, an embodiment of the present invention provides an adjustable flushing nozzle for pickling of steel pipes, comprising a base plate 1, a frame 2 is arranged on the top of the base plate 1, a placement rack 3 is arranged on one side of the frame 2 for storing the steel pipes to be flushed, flushing pipes 4 are arranged on both sides of the top of the frame 2 through an adjustment mechanism, a nozzle assembly 5 is arranged at one end of the flushing pipe 4, and the other end is connected to an external flushing liquid, the nozzle assembly 5 comprises a bellows 7, a first sleeve 6, a second sleeve 8, a water outlet nozzle 9, a transition pipe 12 and an adjustment structure 11, the first sleeve 6 and the second sleeve 8 are installed at both ends of the bellows 7, and the first sleeve 6 is installed between the bellows 7 and the flushing pipe 4. The adjusting structure 11 is installed between the two ends of the bellows 7. The adjusting structure is used to adjust the bending angle of the bellows 7, which is convenient for flushing steel pipes of different lengths and inclinations, and also convenient for flushing out the pickling residues on the inner wall of the steel pipe, thereby improving the flushing effect. The transition pipe 12 is installed at the bottom of the second sleeve 8. A steel pipe internal tightening mechanism is provided between the transition pipe 12 and the bellows 7. The water outlet nozzle 9 is provided at the bottom of the transition pipe 12. The steel pipe internal tightening mechanism is used to clamp the transition pipe 12 on the inner wall of the steel pipe and position the water outlet nozzle 9.

[0026] In this embodiment, the adjustment structure 11 includes a rotating rod 18, an adjusting shaft 19, a connecting plate 20, a rotating collar 21, a telescopic rod 22, a first drive motor 17 and a fixed ring 25. The first drive motor 17 is installed on two opposite sides of the outer wall of the first sleeve 6, the fixed ring 25 is installed on the output end of the first drive motor 17, and one end of the rotating rod 18 is connected to the fixed ring 25, the adjusting shaft 19 is installed between the other ends of the rotating rod 18, the rotating collar 21 is rotatably clamped at both ends of the adjusting shaft 19, one end of the telescopic rod 22 is installed on the rotating collar 21, and the other end is installed on both sides of the second sleeve 8. The first drive motor 17 drives the fixed ring 25 and the rotating rod 18 to rotate, and the position adjustment of the adjusting shaft 19 is completed. Then, the length of the telescopic rod 22 is adjusted to complete the angle and position adjustment of the second sleeve 8, thereby completing the angle bending adjustment of the bellows 7, which is convenient for flushing operation. Compared with hand-held flushing, the present device can more effectively adjust the flushing angle and control the flushing angle.

[0027] Specifically, a connecting plate 20 is installed between the two ends of the adjusting shaft 19, the bottom of the connecting plate 20 is not connected to the rotating ring 21, and the end of the rotating rod 18 away from the fixed ring 25 is fixedly connected to the connecting plate 20, which is convenient for adjusting the telescopic rod 22 and facilitating the position adjustment of the second sleeve 8.

[0028] Specifically, the steel pipe internal tightening mechanism includes a bidirectional screw 14, an adjusting rod 15, an adjusting wheel 16, an extrusion plate 10 and a driving mechanism. The cross-section of the outer wall of the transition tube 12 is an I-shape, and the bidirectional screw 14 is circumferentially arranged along the outer wall of the transition tube 12. The driving mechanism is arranged between the bidirectional screw 14 and the second sleeve 8. The adjusting wheel 16 is threadedly sleeved on both ends of the bidirectional screw 14, and the adjusting rod 15 is hinged on the adjusting wheel 16 respectively. The extrusion plate 10 is installed between the other ends of the adjusting rod 15, and a mounting seat 34 is fixed at the junction of the extrusion plate 10 and the adjusting rod 15, and the adjusting rod 15 and the mounting seat 34 are both hinged. The position adjustment of the adjusting rod 15 completes the position adjustment of the extrusion plate 10, so that the extrusion plate 10 expands inside the steel pipe until the fixation of the transition pipe 12 inside the steel pipe is completed, thereby facilitating the subsequent steel pipe flushing operation.

[0029] Specifically, the extrusion plate 10 is an arc-shaped plate, and support rods 13 are installed on both sides of the extrusion plate 10. The support rods 13 are telescopic column structures, and rubber pads are bonded to the outer wall of the extrusion plate 10 to improve the expansion support stability of the extrusion plate 10 and prevent the transition pipe 12 from falling off from the inside of the steel pipe together with the water outlet nozzle 9.

[0030] In this embodiment, the driving mechanism includes a second driving motor 23, a driving ring 24, a rotating gear 30, a gasket 27, a driven ring 28 and a rotating ring 29. The second driving motor 23 is installed on one side of the second sleeve 8, the driving ring 24 is installed on the output end of the second driving motor 23, and the driving ring 24 extends out of the fixed tube 26. A base ring 31 is installed on the top of the transition tube 12. The rotating ring 29 is rotatably connected to the outside of the base ring 31 to facilitate the rotation setting of the rotating ring 29. The rotating ring 29 is rotatably sleeved on the outer side wall of the top of the transition tube 12, and a gasket is installed on the top of the rotating ring 29. Ring 27, and the driving ring 24 is meshed with the backing ring 27 by bevel teeth, the driven ring 28 is installed at the bottom of the outer wall of the rotating ring 29, and the inner wall of the driven ring 28 is installed with a gear ring 33, the rotating gear 30 is installed on the top of the bidirectional screw 14, and the rotating gear 30 is meshed with the driven ring 28, the second driving motor 23 can drive the rotating ring 29 to rotate, and then drive the rotating gear 30, so as to achieve the purpose of driving the bidirectional screw 14 to rotate, thereby completing the position adjustment of the adjusting wheel 16, completing the expansion and contraction operation of the extrusion plate 10, and improving the practicability of the device.

[0031] Specifically, the anti-slip ring 32 is fixedly connected to the inner wall of the rotating ring 29 , so that the rotating ring 29 is rotatably clamped on the outer wall of the base ring 31 through the anti-slip ring 32 to prevent the rotating ring 29 from detaching from the outer side of the base ring 31 .

[0032] Specifically, the width of the extrusion plate 10 is the same as the height of the bidirectional screw 14, which facilitates the expansion and recovery operations of the extrusion plate 10 and improves the practicability of the device.

[0033] In this embodiment, the placement rack 3 includes a bottom plate 35, a support plate 36, a support column 37 and a back plate 38. The bottom plate 35 is installed on one side of the base plate 1, the support plate 36 is slidably set on the bottom plate 35, the support columns 37 are installed on both sides of the bottom plate 35, the back plate 38 is installed between the tops of the support columns 37, and a plurality of slots are provided on the side of the back plate 38 facing away from the frame 2. The back plate 38 cooperates with the support plate 36 to cut and place the steel pipe at an angle, which is convenient for cleaning operations and easy to discharge the flushing liquid.

[0034] Specifically, the slot is an arc slot, and the support plate 36 is an L-shaped plate, and the side wall of the vertical end of the support plate 36 is provided with a plurality of limit grooves along the extension direction, and the position of the limit groove corresponds to the position of the slot. Through the setting of the limit groove and the slot, it is convenient to clamp the steel pipe to be flushed, and it is convenient to perform the cleaning operation.

[0035] Working principle: The operator first adjusts the position of the support column 37 and the support plate 36 according to the size of the steel pipe to be flushed, so as to facilitate the tilting support of the steel pipe, and then adjusts the position of the flushing pipe 4 through the frame 2, and then starts the first drive motor 17 to adjust the position of the rotating rod 18, and then completes the positioning of the adjustment shaft 19 and the second sleeve 8, and completes the positioning of the water outlet nozzle 9. At this time, the water outlet nozzle 9 and the transition pipe 12 extend into the steel pipe to be flushed, and then starts the second drive motor 23, and drives the gasket ring 27 and the rotating ring 29 to rotate synchronously through the drive ring 24 , and then drives the driven ring 28 to rotate, and finally drives the gear ring 33 to rotate, and finally drives the rotating gear 30 to rotate, so as to achieve the purpose of driving the bidirectional screw 14 to rotate, and can adjust the position of the adjusting wheel 16 on the bidirectional screw 14, so as to complete the angle adjustment of the support rod 13, and can complete the expansion and recovery adjustment of the extrusion plate 10, realize the fixation of the water outlet nozzle 9 and the transition pipe 12 inside the steel pipe, so as to facilitate the flushing operation of the inner wall of the steel pipe, facilitate the discharge of the attachments on the inner wall of the steel pipe after pickling, and at the same time facilitate the discharge of the flushing liquid, and avoid the splashing of the flushing liquid during the flushing operation.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable flushing nozzle for pickling a steel pipe, comprising a base plate (1), a frame (2) being arranged on the top of the base plate (1), and a placement rack (3) being arranged on one side of the frame (2), characterized in that: Flushing pipes (4) are arranged on both sides of the top of the frame (2) through an adjustment mechanism. A nozzle assembly (5) is arranged at one end of the flushing pipe (4), and the other end is connected to an external flushing liquid. The nozzle assembly (5) comprises a bellows (7), a first sleeve (6), a second sleeve (8), a water outlet nozzle (9), a transition pipe (12) and an adjustment structure (11). The first sleeve (6) and the second sleeve (8) are installed at both ends of the bellows (7). The first sleeve (6) is installed between the bellows (7) and the flushing pipe (4). The adjustment structure (11) is installed between the two ends of the bellows (7). The transition pipe (12) is installed at the bottom of the second sleeve (8). A steel pipe internal tightening mechanism is arranged between the transition pipe (12) and the bellows (7). The water outlet nozzle (9) is arranged at the bottom of the transition pipe (12), wherein: An adjustment structure (11) is configured to adjust the bending angle of the corrugated pipe (7) so as to facilitate flushing operations on steel pipes of different lengths and inclinations; The steel pipe inner tightening mechanism is assembled to clamp the transition pipe (12) on the inner wall of the steel pipe to position the water outlet nozzle (9).

2. An adjustable flushing nozzle for pickling of steel pipes as claimed in claim 1, characterized in that: The adjustment structure (11) comprises a rotating rod (18), an adjustment shaft (19), a connecting plate (20), a rotating sleeve (21), a telescopic rod (22), a first drive motor (17) and a fixing ring (25). The first drive motor (17) is mounted on two opposite sides of the outer wall of the first sleeve (6). The fixing ring (25) is mounted on the output end of the first drive motor (17). One end of the rotating rod (18) is connected to the fixing ring (25). The adjustment shaft (19) is mounted between the other ends of the rotating rod (18). The rotating sleeve (21) is rotatably clamped at both ends of the adjustment shaft (19). One end of the telescopic rod (22) is mounted on the rotating sleeve (21) and the other end is mounted on both sides of the second sleeve (8).

3. An adjustable flushing nozzle for pickling of steel pipes as claimed in claim 2, characterized in that: A connecting plate (20) is installed between the two ends of the adjusting shaft (19), the bottom of the connecting plate (20) is not connected to the rotating collar (21), and one end of the rotating rod (18) away from the fixing ring (25) is fixedly connected to the connecting plate (20).

4. An adjustable flushing nozzle for pickling of steel pipes as claimed in claim 1, characterized in that: The steel pipe internal tightening mechanism comprises a bidirectional screw (14), an adjusting rod (15), an adjusting wheel (16), an extrusion plate (10) and a driving mechanism. The cross section of the outer wall of the transition tube (12) is an I-shaped shape, and the bidirectional screw (14) is arranged along the circumferential direction of the outer wall of the transition tube (12). The driving mechanism is arranged between the bidirectional screw (14) and the second sleeve (8). The adjusting wheel (16) is threadedly sleeved on both ends of the bidirectional screw (14), and the adjusting rod (15) is respectively hinged on the adjusting wheel (16). The extrusion plate (10) is installed between the other ends of the adjusting rod (15), and a mounting seat (34) is fixed at the junction of the extrusion plate (10) and the adjusting rod (15), and the adjusting rod (15) and the mounting seat (34) are both hinged.

5. An adjustable flushing nozzle for pickling of steel pipes as claimed in claim 4, characterized in that: The extrusion plate (10) is an arc-shaped plate, and support rods (13) are installed on both sides of the extrusion plate (10), the support rods (13) are telescopic column structures, and a rubber pad is bonded to the outer wall of the extrusion plate (10).

6. An adjustable flushing nozzle for pickling of steel pipes as claimed in claim 4, characterized in that: The driving mechanism comprises a second driving motor (23), a driving ring (24), a rotating gear (30), a backing ring (27), a driven ring (28) and a rotating ring (29); the second driving motor (23) is mounted on one side of the second sleeve (8); the driving ring (24) is mounted on the output end of the second driving motor (23), and the driving ring (24) extends out of the fixed tube (26); a base ring (31) is mounted on the top of the transition tube (12); the rotating ring (29) is rotatably connected to the outside of the base ring (31), a backing ring (27) is mounted on the top of the rotating ring (29), and the driving ring (24) and the backing ring (27) are meshed with bevel teeth; the driven ring (28) is mounted on the bottom of the outer wall of the rotating ring (29), and a gear ring (33) is mounted on the inner wall of the driven ring (28); the rotating gear (30) is mounted on the top of the bidirectional screw (14), and the rotating gear (30) and the driven ring (28) are meshed.

7. An adjustable flushing nozzle for pickling of steel pipes as claimed in claim 6, characterized in that: The anti-slip ring (32) is fixedly connected to the inner wall of the rotating ring (29), so that the rotating ring (29) is rotated and clamped on the outer wall of the top of the transition pipe (12) through the anti-slip ring (32).

8. An adjustable flushing nozzle for pickling of steel pipes as claimed in claim 4, characterized in that: The width of the extrusion plate (10) is the same as the height of the bidirectional screw (14).

9. An adjustable flushing nozzle for pickling of steel pipes as claimed in claim 1, characterized in that: The placement rack (3) comprises a bottom plate (35), a support plate (36), a support column (37) and a backing plate (38), wherein the bottom plate (35) is mounted on one side of the base plate (1), the support plate (36) is slidably arranged on the bottom plate (35), the support column (37) is mounted on both sides of the bottom plate (35), the backing plate (38) is mounted between the tops of the support columns (37), and a plurality of slots are provided on the side of the backing plate (38) facing away from the frame (2).

10. An adjustable flushing nozzle for pickling of steel pipes as claimed in claim 9, characterized in that: The clamping groove is an arc clamping groove, and the support plate (36) is an L-shaped plate. A plurality of limiting grooves are formed on the side wall of the vertical end of the support plate (36) along the extension direction, and the positions of the limiting grooves correspond to the positions of the clamping grooves.

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