An adjustable flushing nozzle for steel pipe pickling

Abstract

The present invention relates to the technical field of steel pipe cleaning, and specifically relates to an adjustable flushing nozzle for pickling of steel pipes, which includes a base plate. A frame is arranged on the top of the base plate, and a placement rack is arranged on one side of the frame. Flushing pipes are arranged on both sides of the top of the frame through an adjusting mechanism. The adjusting mechanism is used to adjust the bending angle of the corrugated pipe. One end of the flushing pipe is provided with a nozzle assembly, and the other end is connected to an external flushing liquid. The nozzle assembly includes 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 both ends of the corrugated pipe. The first sleeve is installed between the corrugated pipe and the flushing pipe. The adjusting structure is installed between both ends of the corrugated pipe. The transition pipe is installed at the bottom of the second sleeve. A steel pipe inner tightening mechanism is arranged between the transition pipe and the corrugated pipe. The water outlet nozzle is arranged at the bottom of the transition pipe. The present invention flushes the inner wall of the steel pipe, prevents the flushing liquid from splashing and causing harm to the operator, and at the same time saves the consumption of the flushing liquid.

Description

Technical Field

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

[0002] Steel pipe pickling is to remove impurities such as scale, rust, and oil on the surface of the steel pipe by pickling, so as to improve the surface quality and service life of the steel pipe. During the pickling process, the surface of the stainless steel pipe will come into contact with the acidic solution and may leave some acidic substances remaining. If these residues are not removed in time, they may corrode the surface of the stainless steel pipe, affecting its corrosion resistance and appearance. Flushing with the flushing liquid can effectively remove these residues and ensure the surface cleanliness of the stainless steel pipe; and the acidic solution used during the pickling process may contain various chemical agents. By flushing with the flushing liquid, these chemical reactions can be terminated or slowed down, avoiding further reactions and thus protecting the stainless steel pipe from damage.

[0003] After the existing steel pipes are pickled, generally, a water pipe outlet nozzle is held manually by a person to flush the acidic solution remaining on the inner wall of the steel pipe. The cleaning of the outer wall is generally more convenient. Although the above-mentioned manual cleaning is a common cleaning method, there are indeed some drawbacks when flushing the inner wall of the steel pipe, which are as follows:

[0004] (1) The cleaning effect is limited. Manual flushing may not ensure that all areas are flushed evenly and sufficiently. Especially when the shape and size of the stainless steel pipe fittings are large and not uniform, it is difficult for manual flushing to reach all corners inside the steel pipe, resulting in poor cleaning effect, and it is difficult to stably control the flushing direction of the water outlet nozzle by hand.

[0005] (2) Low work efficiency. Manual flushing requires a large amount of time and manpower. Especially when a large number of pipe fittings need to be processed, the work efficiency will be significantly reduced, which not only increases the cost but also may affect the production schedule.

[0006] (3) High safety risk. During the manual flushing process, the staff needs to hold the water pipe outlet nozzle for operation, which increases the operation difficulty and safety risk. It may cause the acidic solution on the surface of the stainless steel pipe to splash onto the flushing personnel, causing harm.

[0007] (4) Difficult to standardize. The cleaning effect and quality of manual flushing often depend on the skills and experience of the operators. Different operators may adopt different flushing methods and intensities, resulting in inconsistent cleaning effects and difficult to meet the standardized requirements.

[0008] Therefore, it is necessary to design a flushing nozzle for steel pipe pickling that can stably flush the inner wall of the steel pipe. Summary of the Invention

[0009] In view of the above problems, the present application provides an adjustable flushing nozzle for steel pipe pickling, which solves the problems of unsatisfactory flushing effect and long flushing time after pickling the inner wall of the steel pipe mentioned in the above background technology, and prevents the harm caused by the splashing of the flushing liquid during the flushing process.

[0010] The technical solution of the present invention is: an adjustable flushing nozzle for steel pipe pickling, including a base plate, a frame is arranged on the top of the base plate, a placement rack is arranged on one side of the frame, and flushing pipes are arranged on both sides of the top of the frame through an adjustment mechanism. One end of the flushing pipe is provided with a nozzle assembly, and the other end is connected to an external flushing liquid. The nozzle assembly includes a corrugated pipe, 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 corrugated pipe. The first sleeve is installed between the corrugated pipe and the flushing pipe. The adjustment structure is installed between both ends of the corrugated pipe. The transition pipe is installed at the bottom of the second sleeve. A steel pipe inner tightening mechanism is arranged between the transition pipe and the corrugated pipe. The water outlet nozzle is arranged at the bottom of the transition pipe, where:

[0011] The adjustment structure is assembled to adjust the bending angle of the corrugated pipe, facilitating the flushing operation of steel pipes with different lengths and inclinations;

[0012] 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.

[0013] Preferably, the adjustment structure includes a rotating rod, an adjustment shaft, a connecting plate, a rotating collar, a telescopic rod, a first driving motor and a fixing ring. The first driving motor is installed on opposite sides of the outer wall of the first sleeve. The fixing ring is installed on the output end of the first driving motor, and one end of the rotating rod is connected to the fixing ring. The adjustment shaft is installed between the other end of the rotating rod. The rotating collar is rotatably clamped at both ends of the adjustment shaft. One end of the telescopic rod is installed on the rotating collar, and the other end is installed on both sides of the second sleeve.

[0014] Preferably, a connecting plate is installed between both ends of the adjustment shaft. The bottom of the connecting plate is not connected to the rotating collar, and the end of the rotating rod away from the fixing ring is fixedly connected to the connecting plate.

[0015] Preferably, the steel pipe inner tightening mechanism includes a bidirectional screw, an adjustment rod, an adjustment wheel, a pressing plate and a driving mechanism. The cross-section of the outer wall of the transition pipe is I-shaped, and the bidirectional screw is arranged along the circumferential direction of the outer wall of the transition pipe. The driving mechanism is arranged between the bidirectional screw and the second sleeve. The adjustment wheel is threadedly sleeved at both ends of the bidirectional screw, and the adjustment rods are respectively hinged on the adjustment wheels. The pressing plate is installed between the other ends of the adjustment rods. A mounting seat is fixed at the connection between the pressing plate and the adjustment rod, and the adjustment rod and the mounting seat are both hinged.

[0016] Preferably, the pressing plate is an arc-shaped plate, and support rods are installed on both sides of the pressing plate. The support rods are telescopic column structures, and a rubber pad is bonded to the outer wall of the pressing plate.

[0017] 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.

[0018] 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.

[0019] Preferably, the width of the extrusion plate is the same as the height of the bidirectional screw.

[0020] 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.

[0021] 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.

[0022] The beneficial effects of the present invention are as follows:

[0023] (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.

[0024] (2)The adjustable flushing nozzle for steel pipe pickling according to the present invention drives the driving ring to rotate through the second driving motor, and then drives the gasket ring, the rotating ring, the driven ring and the toothed ring to rotate. Finally, it drives the rotating gear and the bidirectional screw to rotate, so as to adjust the position of the adjusting wheel on the bidirectional screw, achieving the purpose of expanding and retracting 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. And the fixed water outlet nozzle can make the flushing liquid flow quickly during spraying, facilitating the removal of the attached pickling residues on the inner wall of the steel pipe and improving the flushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the drawings and embodiments.

[0026] Figure 1 is a three-dimensional structure diagram provided by the present invention;

[0027] Figure 2 is a structure diagram of the nozzle assembly provided by the present invention;

[0028] Figure 3 is a structure diagram of the extrusion plate provided by the present invention;

[0029] Figure 4 is a structure diagram of the adjustment structure provided by the present invention;

[0030] Figure 5 is a structure diagram of the second driving motor provided by the present invention;

[0031] Figure 6 is Figure 2 an enlarged structure diagram at A in

[0032] Figure 7 is a side view structure diagram of the transition pipe provided by the present invention;

[0033] Figure 8 is Figure 7 an enlarged structure diagram at B in

[0034] In the figure: 1, substrate; 2, frame; 3, placement rack; 4, flushing pipe; 5, nozzle assembly; 6, first sleeve; 7, bellows; 8, second sleeve; 9, water outlet nozzle; 10, pressing plate; 11, adjusting structure; 12, transition pipe; 13, support rod; 14, bidirectional screw; 15, adjusting rod; 16, adjusting wheel; 17, first driving motor; 18, rotating rod; 19, adjusting shaft; 20, connecting plate; 21, rotating collar; 22, telescopic rod; 23, second driving motor; 24, driving ring; 25, fixing ring; 26, fixing pipe; 27, gasket ring; 28, driven ring; 29, rotating ring; 30, rotating gear; 31, base ring; 32, anti - detachment ring; 33, toothed ring; 34, mounting seat; 35, bottom plate; 36, supporting plate; 37, support column; 38, back plate. Detailed implementation mode

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the present invention 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 those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation to the present invention.

[0036] Embodiment: As Figures 1 - 8 shown, the embodiment of the present invention provides an adjustable flushing nozzle for steel pipe pickling, including a substrate 1. A frame 2 is arranged on the top of the substrate 1. A placement rack 3 is arranged on one side of the frame 2 for storing the steel pipes to be flushed. On both sides of the top of the frame 2, a flushing pipe 4 is arranged through an adjusting mechanism. One end of the flushing pipe 4 is provided with a nozzle assembly 5, and the other end is connected to an external flushing liquid. The nozzle assembly 5 includes a bellows 7, a first sleeve 6, a second sleeve 8, a water outlet nozzle 9, a transition pipe 12 and an adjusting 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 adjusting structure 11 is installed between both 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 with different lengths and inclinations, and also convenient for flushing out the pickling residues on the inner wall of the steel pipes, improving the flushing effect. The transition pipe 12 is installed at the bottom of the second sleeve 8. A steel pipe inner 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. The steel pipe inner tightening mechanism is used to clamp the transition pipe 12 on the inner wall of the steel pipe to position the water outlet nozzle 9.

[0037] In this embodiment, the adjusting 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 driving motor 17 and a fixing ring 25. The first driving motor 17 is installed on opposite sides of the outer wall of the first sleeve 6. The fixing ring 25 is installed on the output end of the first driving motor 17, and one end of the rotating rod 18 is connected to the fixing 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 driving motor 17 drives the fixing ring 25 and the rotating rod 18 to rotate to complete the position adjustment of the adjusting shaft 19, and then the length of the telescopic rod 22 is adjusted to complete the angle and position adjustment of the second sleeve 8, so as to complete the angle bending adjustment of the corrugated pipe 7, which is convenient for the flushing operation. Compared with the hand-held flushing, this device can more effectively adjust the flushing angle and control the flushing angle.

[0038] Specifically, a connecting plate 20 is installed between both ends of the adjusting shaft 19. The bottom of the connecting plate 20 is not connected to the rotating collar 21, and the end of the rotating rod 18 away from the fixing 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.

[0039] Specifically, the steel pipe inner tightening mechanism includes a bidirectional screw 14, an adjusting rod 15, an adjusting wheel 16, a pressing plate 10 and a driving mechanism. The cross-section of the outer wall of the transition pipe 12 is I-shaped, and the bidirectional screw 14 is arranged along the circumferential direction of the outer wall of the transition pipe 12. The driving mechanism is arranged between the bidirectional screw 14 and the second sleeve 8. The adjusting wheel 16 is threadedly sleeved at both ends of the bidirectional screw 14, and the adjusting rods 15 are respectively hinged on the adjusting wheels 16. The pressing plate 10 is installed between the other ends of the adjusting rods 15, and a mounting seat 34 is fixed at the connection between the pressing plate 10 and the adjusting rods 15, and the adjusting rods 15 and the mounting seat 34 are all hinged. The position adjustment of the adjusting rods 15 completes the position adjustment of the pressing plate 10, so that the pressing plate 10 expands inside the steel pipe until the fixing of the transition pipe 12 inside the steel pipe is completed, which is convenient for the subsequent steel pipe flushing operation.

[0040] Specifically, the pressing plate 10 is an arc-shaped plate, and support rods 13 are installed on both sides of the pressing plate 10. The support rods 13 are telescopic column structures, and a rubber pad is bonded to the outer wall of the pressing plate 10 to improve the expansion support stability of the pressing plate 10 and prevent the transition pipe 12 and the water outlet nozzle 9 from falling off from inside the steel pipe.

[0041] In this embodiment, the driving mechanism includes a second driving motor 23, a driving ring 24, a rotating gear 30, a cushion ring 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, and 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 at the top of the transition tube 12. The rotating ring 29 is rotatably connected to the outside of the base ring 31, which facilitates 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 cushion ring 27 is installed on the top of the rotating ring 29. The driving ring 24 and the cushion ring 27 are engaged with each other by conical tooth patterns. The driven ring 28 is installed on the bottom of the outer side wall of the rotating ring 29, and a toothed ring 33 is installed on the inner side wall of the driven ring 28. The rotating gear 30 is installed on the top of the bidirectional screw 14, and the rotating gear 30 is engaged with the driven ring 28. By driving the second driving motor 23, the rotating ring 29 can be driven to rotate, and then the rotating gear 30 can be driven to drive the bidirectional screw 14 to rotate, so as to complete the position adjustment of the adjusting wheel 16 and complete the expansion and contraction operations of the pressing plate 10, improving the practicability of the device.

[0042] Specifically, the anti - detachment 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 side wall of the base ring 31 through the anti - detachment ring 32, preventing the rotating ring 29 from detaching from the outer side of the base ring 31.

[0043] Specifically, the width of the pressing plate 10 is the same as the height of the bidirectional screw 14, which is convenient for completing the expansion and recovery operations of the pressing plate 10 and improving the practicability of the device.

[0044] In this embodiment, the placement rack 3 includes a bottom plate 35, a support plate 36, support columns 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 arranged 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. A plurality of card slots are opened on the side of the back plate 38 away from the frame 2. The back plate 38 and the support plate 36 can cooperate to place the steel pipe obliquely, which is convenient for cleaning operations and for draining the flushing liquid.

[0045] Specifically, the card slots are arc - shaped card slots, the support plate 36 is an L - shaped plate, and a plurality of limiting slots are opened along the extending direction on the side wall of the vertical end of the support plate 36, and the positions of the limiting slots correspond to the positions of the card slots. Through the arrangement of the limiting slots and the card slots, it is convenient to clamp the steel pipe to be flushed and facilitate the cleaning operation.

[0046] 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.

[0047] 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 of steel pipes, 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); 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 one, and a plurality of bidirectional screws (14) are arranged along the circumference 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 one end of the two adjusting rods (15) is respectively hinged on the two adjusting wheels (16). The extrusion plate (10) is installed at the other end 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 extrusion plate (10) is composed of a plurality of arc-shaped plates, and a bidirectional screw rod (14) and an adjusting rod (15) and an adjusting wheel (16) connected thereto control one of the arc-shaped plates.

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 driving motor (17) and a fixing ring (25). The first driving 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 driving 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 adjusting 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 sleeve ring (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: 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 side walls of the extrusion plate (10).

5. The adjustable flushing nozzle for pickling of steel pipes according to claim 1, characterized in that: The driving mechanism comprises 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 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), and a gasket (27) is mounted on the top of the rotating ring (29); the driving ring (24) and the gasket (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.

6. An adjustable flushing nozzle for pickling of steel pipes as claimed in claim 5, 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).

7. An adjustable flushing nozzle for pickling of steel pipes as claimed in claim 1, characterized in that: The width of the extrusion plate (10) is the same as the height of the bidirectional screw (14).

8. 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); 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).

9. An adjustable flushing nozzle for pickling of steel pipes as claimed in claim 8, characterized in that: The slot is an arc slot, the support plate (36) 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 (36) along the extension direction, and the positions of the limiting slots correspond to the positions of the slot.

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