Water conservancy construction pipeline outer surface rust removal device

Abstract

The utility model relates to the technical field of water conservancy construction pipeline outer surface rust removal devices, in particular to a water conservancy construction pipeline outer surface rust removal device which clamps a water conservancy construction pipeline through a clamping mechanism and moves the water conservancy pipeline to a pre-pickling mechanism by starting the clamping mechanism. The pre-pickling mechanism is started to conduct pre-pickling on pickling liquid discharged by the spraying mechanism, liquid obtained after pickling of the water conservancy construction pipeline is completed through the pre-pickling mechanism is filtered and discharged through the collecting mechanism, the spraying mechanism is started to conduct secondary pickling on the water conservancy construction pipeline, and the practicability of the equipment is improved; comprising a clamping mechanism; the device further comprises a pre-pickling mechanism, a collecting mechanism, a spraying mechanism and a drying mechanism, the clamping mechanism and the pre-pickling mechanism are both installed on the spraying mechanism, the pre-pickling mechanism is located below the clamping mechanism, the collecting mechanism is located below the spraying mechanism, the drying mechanism is located in front of the spraying mechanism, and the drying mechanism is connected with the spraying mechanism.

Description

Technical Field

[0001] This utility model relates to the technical field of rust removal devices for the outer surface of water conservancy construction pipelines, and in particular to a rust removal device for the outer surface of water conservancy construction pipelines. Background Technology

[0002] In the field of water conservancy engineering, during the operation of water conservancy pipelines, corrosion and rust will occur on the outer wall of the pipeline. Metal water conservancy construction pipelines are prone to rust, which makes the railings unsightly. Severe rust can also damage the sturdiness of the railings, causing serious safety hazards and economic losses. In order to recoat the anti-rust decorative coating, the rust layer must first be removed.

[0003] For example, the prior art represented by the rust removal device for the outer surface of water conservancy construction pipelines disclosed in the utility model patent application number CN202323110811.0 mainly consists of a base, a fixed frame, a rotating shaft, a drive shaft, a driven wheel, an upper threaded rod, a lower threaded rod, and a support ring. Rust removal of the outer surface of water conservancy construction pipelines is achieved through the cooperation of the base, fixed frame, rotating shaft, drive shaft, driven wheel, upper threaded rod, lower threaded rod, and support ring.

[0004] Traditional grinding and rust removal methods generate a lot of dust during the rust removal process of pipelines, which affects the environment and workers' health. In addition, traditional pickling methods directly discharge the pickling solution after the pipeline rust removal is completed, resulting in material waste. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a rust removal device for the outer surface of water conservancy construction pipelines. This device uses a clamping mechanism to clamp the pipelines, moves them to a pre-acid washing mechanism, and uses the pre-acid washing mechanism to pre-acid wash the pipelines with the acid washing liquid discharged from the spraying mechanism. The liquid from the pre-acid washing mechanism is then filtered and discharged by a collection mechanism, and the pipelines are further acid-washed by the spraying mechanism. This improves the practicality of the equipment.

[0006] This utility model discloses a rust removal device for the outer surface of a hydraulic construction pipeline, including a clamping mechanism; it also includes a pre-acid washing mechanism, a collection mechanism, a spraying mechanism, and a drying mechanism. The clamping mechanism and the pre-acid washing mechanism are both installed on the spraying mechanism, with the pre-acid washing mechanism located below the clamping mechanism and the collection mechanism located below the spraying mechanism. The drying mechanism is located in front of the spraying mechanism and is connected to it. The clamping mechanism clamps the hydraulic construction pipeline, and activating the clamping mechanism moves the pipeline to the pre-acid washing mechanism. Activating the pre-acid washing mechanism pre-acidifies the pipeline with the acid solution discharged from the spraying mechanism. The pre-acid washing liquid is filtered and discharged by the collection mechanism. Activating the spraying mechanism performs a second acid washing on the pipeline to completely remove rust. The pipeline is then rinsed and cleaned by the spraying mechanism. After cleaning, the drying mechanism dries the pipeline. The liquid sprayed by the spraying mechanism is filtered and collected by the pre-acid washing mechanism, improving the practicality of the equipment.

[0007] Preferably, the clamping mechanism includes a bracket, a slide groove, a lead screw, a motor, two sets of sliders, two sets of electric cylinders, and two sets of electric clamps. The top of the slide groove is mounted on the bracket, the lead screw is installed inside the slide groove, the output end of the motor is connected to the right end of the lead screw, the interior of the two sets of sliders is slidably mounted on the lead screw, and the exterior of the two sets of sliders is slidably mounted on the inner wall of the slide groove. The tops of the two sets of electric cylinders are respectively mounted on the two sets of sliders, and the two sets of electric clamps are respectively mounted on the bottom ends of the two sets of electric cylinders. By using the two sets of electric clamps to clamp the hydraulic construction pipeline, the motor is started to rotate the lead screw, and the two sets of sliders are guided by the slide groove to move on the lead screw, thereby moving the hydraulic construction pipeline. By extending and retracting the two sets of electric cylinders, the two sets of electric clamps are raised and lowered, thereby raising and lowering the hydraulic construction pipeline, improving the practicality of the equipment.

[0008] Preferably, the pre-acid washing mechanism includes a first filter screen, a first collection box, a first filter plate, a first circulating pump, a first tee pipe, and two sets of first spray pipes. The bottom end of the first filter screen is installed on the top of the first collection box, the first filter plate is installed on the inner wall of the first collection box, the input end of the first circulating pump is connected to the outer wall of the first collection box, the input end of the first tee pipe is connected to the output end of the first circulating pump, the first tee pipe is provided with two sets of output ends, the input ends of the two sets of first spray pipes are respectively connected to the two sets of output ends of the first tee pipe, and multiple nozzles are respectively provided on the two sets of first tee pipes. The first filter screen filters large particles in the acid washing liquid discharged by the spray mechanism, the first filter plate filters small particulate impurities in the spray liquid, and by starting the first circulating pump, the acid washing liquid filtered in the first collection box is discharged through the first tee pipe to the two sets of first spray pipes, and the water conservancy construction pipeline is pre-acid washed through the two sets of first spray pipes, thereby improving the practicality of the equipment.

[0009] Preferably, the collection mechanism includes a second filter screen, a second collection box, a second filter plate, and a drain pipe. The bottom end of the second filter screen is installed on the top of the second collection box, the second filter plate is installed on the inner wall of the second collection box, the inlet end of the drain pipe is connected to the outer wall of the second collection box, and a valve is installed on the outlet end of the drain pipe. The second filter screen filters large particles of the waste liquid discharged from the pre-acid washing mechanism, the second filter plate filters small particulate impurities in the spray liquid, and the filtered waste liquid in the second collection box is discharged through the drain pipe, thereby improving the practicality of the equipment.

[0010] Preferably, the spraying mechanism includes a workbench, two sets of drain plates, two sets of second spray pipes, a diversion pipe, a second circulating pump, and a second three-way pipe. Two sets of drain plates are installed at the top of the workbench. The two sets of second spray pipes are respectively installed at the top of the workbench. The diversion pipe has two sets of input ends and two sets of output ends. The input ends of the two sets of second spray pipes are respectively connected to the two sets of output ends of the diversion pipe. Valves are respectively installed on the two sets of input ends of the diversion pipe. The output end of the second circulating pump is connected to one set of input ends of the diversion pipe, and the output end of the second three-way pipe is connected to the output end of the second circulating pump. The inlet connection is provided with two sets of inlet terminals. The two sets of inlet terminals are connected to the outlet terminals of the pickling solution and the cleaning solution, respectively, and valves are installed on the two sets of inlet terminals. The workbench supports the two sets of drain plates, and the spraying solution is discharged through the two sets of drain plates. By starting the second circulation pump, the pickling solution and the cleaning solution are discharged into the two sets of second three-way pipes through the second circulation pump, and then discharged through the two sets of second three-way pipes to perform secondary rust removal and cleaning of the water conservancy construction pipeline, thereby improving the practicality of the equipment.

[0011] Preferably, the drying mechanism includes an air pump, a heating chamber, a third filter plate, a heater, and an air supply pipe. The output end of the air pump is connected to the input end of the heating chamber. The third filter plate and the heater are respectively installed on the inner wall of the heating chamber, with the third filter plate located to the left of the heater. The input end of the air supply pipe is connected to the output end of the heating chamber, and the output end of the air supply pipe is connected to the other input end of the diversion pipe. A valve is installed on the output end of the air supply pipe. By starting the air pump, air is discharged into the heating chamber. The third filter plate filters impurities in the air, and the heater heats the filtered air. The heated air is discharged into the diversion pipe through the air supply pipe and then discharged through two sets of second spray pipes to dry the hydraulic construction pipeline, thereby improving the practicality of the equipment.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the hydraulic construction pipeline is clamped by the clamping mechanism, the hydraulic pipeline is moved to the pre-acid washing mechanism by activating the clamping mechanism, the acid washing liquid discharged by the spraying mechanism is pre-acid washed by activating the pre-acid washing mechanism, the liquid after the hydraulic construction pipeline is acid washed by the pre-acid washing mechanism is filtered and discharged by the collection mechanism, the hydraulic construction pipeline is acid washed again by activating the spraying mechanism to remove all the rust from the hydraulic construction pipeline, the pipeline is rinsed and cleaned by the spraying mechanism, the pipeline is dried by activating the drying mechanism after cleaning, and the liquid sprayed by the spraying mechanism is filtered and collected by the pre-acid washing mechanism, thus improving the practicality of the equipment. Attached Figure Description

[0013] Figure 1 This is an isometric sectional view of the present invention;

[0014] Figure 2 This is an isometric schematic diagram of the clamping mechanism of this utility model;

[0015] Figure 3 This is a front sectional view of the pre-acid washing mechanism of this utility model;

[0016] Figure 4 This is a front cross-sectional view of the collection mechanism of this utility model;

[0017] Figure 5 This is an isometric schematic diagram of the spraying mechanism of this utility model;

[0018] Figure 6 This is a right-side cross-sectional view of the drying mechanism of this utility model.

[0019] The attached diagram is labeled as follows: 01, clamping mechanism; 11, bracket; 12, slide groove; 13, lead screw; 14, motor; 15, slider; 16, electric cylinder; 17, electric clamp; 02, pre-acid washing mechanism; 21, first filter screen; 22, first collection box; 23, first filter plate; 24, first circulation pump; 25, first tee pipe; 26, first spray pipe; 03, collection mechanism; 31, second filter screen; 32, second collection box; 33, second filter plate; 34, drain pipe; 04, spraying mechanism; 41, workbench; 42, drain plate; 43, second spray pipe; 44, diverter pipe; 45, second circulation pump; 46, second tee pipe; 05, drying mechanism; 51, air pump; 52, heating box; 53, third filter plate; 54, heater; 55, air supply pipe. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0021] Example 1

[0022] like Figure 1 As shown, a rust removal device for the outer surface of a hydraulic construction pipeline includes a clamping mechanism 01; it also includes a pre-acid washing mechanism 02, a collection mechanism 03, a spraying mechanism 04, and a drying mechanism 05. The clamping mechanism 01 and the pre-acid washing mechanism 02 are both installed on the spraying mechanism 04. The pre-acid washing mechanism 02 is located below the clamping mechanism 01, the collection mechanism 03 is located below the spraying mechanism 04, and the drying mechanism 05 is located in front of the spraying mechanism 04. The drying mechanism 05 is connected to the spraying mechanism 04.

[0023] The hydraulic construction pipeline is clamped by the clamping mechanism 01. The hydraulic pipeline is moved to the pre-acid washing mechanism 02 by activating the clamping mechanism 01. The pre-acid washing mechanism 02 is activated to pre-acid wash the pickling liquid discharged from the spraying mechanism 04. The liquid after the pre-acid washing mechanism 02 has finished acid washing the hydraulic construction pipeline is filtered and discharged by the collection mechanism 03. The hydraulic construction pipeline is acid washed again by activating the spraying mechanism 04 to remove all the rust. The pipeline is then rinsed and cleaned by the spraying mechanism 04. After cleaning, the pipeline is dried by activating the drying mechanism 05. The liquid sprayed by the spraying mechanism 04 is filtered and collected by the pre-acid washing mechanism 02, which improves the practicality of the equipment.

[0024] like Figure 2 As shown, the clamping mechanism 01 includes a bracket 11, a slide 12, a lead screw 13, a motor 14, two sets of sliders 15, two sets of electric cylinders 16, and two sets of electric clamps 17. The top of the slide 12 is mounted on the bracket 11, the lead screw 13 is mounted inside the slide 12, the output end of the motor 14 is connected to the right end of the lead screw 13, the inside of the two sets of sliders 15 is slidably mounted on the lead screw 13, and the outside of the two sets of sliders 15 is slidably mounted on the inner wall of the slide 12. The tops of the two sets of electric cylinders 16 are mounted on the two sets of sliders 15, and the two sets of electric clamps 17 are mounted on the bottom of the two sets of electric cylinders 16.

[0025] By using two sets of electric clamps 17 to clamp the hydraulic construction pipeline, and by starting the motor 14 to rotate the lead screw 13, the two sets of sliders 15 are guided by the slide groove 12 to move on the lead screw 13, thereby moving the hydraulic construction pipeline. By extending and retracting the two sets of electric cylinders 16, the two sets of electric clamps 17 are raised and lowered respectively, thereby raising and lowering the hydraulic construction pipeline, improving the practicality of the equipment.

[0026] Example 2

[0027] like Figure 3 and Figure 4 As shown, based on Embodiment 1, it also includes a pre-acid washing mechanism 02 and a collection mechanism 03. The pre-acid washing mechanism 02 includes a first filter screen 21, a first collection box 22, a first filter plate 23, a first circulation pump 24, a first tee pipe 25, and two sets of first spray pipes 26. The bottom end of the first filter screen 21 is installed on the top end of the first collection box 22, the first filter plate 23 is installed on the inner wall of the first collection box 22, the input end of the first circulation pump 24 is connected to the outer wall of the first collection box 22, and the input end of the first tee pipe 25 is connected to the output end of the first circulation pump 24. The connecting pipe 25 is provided with two sets of output ends. The input ends of the two sets of first spray pipes 26 are respectively connected to the two sets of output ends of the first three-way pipe 25, and multiple nozzles are respectively provided on the two sets of first three-way pipes 25. The collection mechanism 03 includes a second filter screen 31, a second collection box 32, a second filter plate 33 and a sewage pipe 34. The bottom end of the second filter screen 31 is installed on the top end of the second collection box 32, the second filter plate 33 is installed on the inner wall of the second collection box 32, the input end of the sewage pipe 34 is connected to the outer wall of the second collection box 32, and a valve is provided on the output end of the sewage pipe 34.

[0028] The first filter screen 21 filters large particles in the pickling solution discharged from the spraying mechanism 04, and the first filter plate 23 filters small particulate impurities in the spraying solution. By starting the first circulation pump 24, the pickling solution filtered in the first collection tank 22 is discharged through the first three-way pipe 25 into the two sets of first spray pipes 26 respectively, and the water conservancy construction pipeline is pre-pickled through the two sets of first spray pipes 26 respectively. The second filter screen 31 filters large particles in the waste liquid discharged from the pre-pickling mechanism 02, and the second filter plate 33 filters small particulate impurities in the spraying solution. The waste liquid filtered in the second collection tank 32 is discharged through the sewage pipe 34, improving the practicality of the equipment.

[0029] Example 3

[0030] like Figure 5 and Figure 6As shown, based on Embodiment 1, it also includes a spraying mechanism 04 and a drying mechanism 05. The spraying mechanism 04 includes a workbench 41, two sets of drain plates 42, two sets of second spray pipes 43, a diversion pipe 44, a second circulation pump 45, and a second three-way pipe 46. Two sets of drain plates 42 are installed at the top of the workbench 41. The two sets of second spray pipes 43 are respectively installed at the top of the workbench 41. The diversion pipe 44 has two sets of input ends and two sets of output ends. The input ends of the two sets of second spray pipes 43 are respectively connected to the two sets of output ends of the diversion pipe 44. Valves are respectively installed on the two sets of input ends of the diversion pipe 44. The output end of the second circulation pump 45 is connected to one set of input ends of the diversion pipe 44. The output end of the second three-way pipe 46 is connected to the second circulation pump 45. The input end is connected, and the second three-way pipe 46 is provided with two sets of input ends. The two sets of input ends of the second three-way pipe 46 are respectively connected to the output ends of the pickling solution and the cleaning solution, and valves are respectively provided on the two sets of input ends of the second three-way pipe 46; the drying mechanism 05 includes an air pump 51, a heating box 52, a third filter plate 53, a heater 54, and an air supply pipe 55. The output end of the air pump 51 is connected to the input end of the heating box 52. The third filter plate 53 and the heater 54 are respectively installed on the inner wall of the heating box 52. The third filter plate 53 is located to the left of the heater 54. The input end of the air supply pipe 55 is connected to the output end of the heating box 52, and the output end of the air supply pipe 55 is connected to the other input end of the diverter pipe 44. A valve is provided on the output end of the air supply pipe 55;

[0031] The workbench 41 supports two sets of drain plates 42, and the spray liquid is discharged through the two sets of drain plates 42. By starting the second circulation pump 45, the pickling liquid and cleaning liquid are discharged through the second three-way pipe 46 into the two sets of second three-way pipes 46, respectively, and discharged through the two sets of second three-way pipes 46 to perform secondary rust removal and cleaning of the water conservancy construction pipeline. By starting the air pump 51, air is discharged into the heating box 52. The third filter plate 53 filters the impurities in the air, and the heater 54 heats the filtered air. The heated air is discharged through the air supply pipe 55 into the diversion pipe 44, and discharged through the two sets of second spray pipes 43 to dry the water conservancy construction pipeline, thereby improving the practicality of the equipment.

[0032] like Figures 1 to 6As shown, this utility model discloses a rust removal device for the outer surface of a hydraulic construction pipeline. During operation, two sets of electric clamps 17 clamp the hydraulic construction pipeline. A motor 14 rotates a lead screw 13, which, guided by a slide groove 12, moves two sets of sliders 15 on the lead screw 13, thus moving the hydraulic construction pipeline. Two sets of electric cylinders 16 extend and retract, raising and lowering the two sets of electric clamps 17, thus raising and lowering the hydraulic construction pipeline. Then, a first filter screen 21 filters large particles from the pickling solution discharged from the spray mechanism 04, and a first filter plate 23 filters small particles from the spray solution. A first circulating pump 24 starts the first collection tank 22, and the filtered pickling solution is discharged through a first three-way pipe 25 into two sets of first spray pipes 26 for pre-pickling of the hydraulic construction pipeline. Afterwards, the first filter screen 21 filters large particles from the pickling solution discharged from the spray mechanism 04. Plate 23 filters small particulate impurities in the spray solution. The first circulation pump 24 activates the first collection tank 22, causing the filtered pickling solution to be discharged through the first three-way pipe 25 into two sets of first spray pipes 26. These first spray pipes 26 then pre-pickle the hydraulic construction pipeline. The workbench 41 supports the two sets of drain plates 42, allowing the spray solution to be discharged through them. Finally, the second circulation pump 45 activates the second three-way pipe 46 to separately discharge the pickling solution and cleaning solution. The air is discharged through the second circulation pump 45 into two sets of second three-way pipes 46, and then discharged through the two sets of second three-way pipes 46 to perform secondary rust removal and cleaning of the water conservancy construction pipeline. Finally, the air is discharged into the heating box 52 by starting the air pump 51. The third filter plate 53 filters the impurities in the air, and the heater 54 heats the filtered air. The heated air is discharged into the diversion pipe 44 through the air supply pipe 55, and then discharged through the two sets of second spray pipes 43 to dry the water conservancy construction pipeline, thereby improving the practicality of the equipment.

[0033] The motor 14, electric clamp 17, first circulation pump 24, second circulation pump 45, air pump 51, and heater 54 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0034] The main functions achieved by this utility model are as follows: the clamping mechanism 01 clamps the water conservancy construction pipeline; the clamping mechanism 01 moves the water conservancy pipeline to the pre-acid washing mechanism 02; the pre-acid washing mechanism 02 pre-acid washes the acid washing liquid discharged from the spraying mechanism 04; the liquid after the pre-acid washing mechanism 02 has finished acid washing the water conservancy construction pipeline is filtered and discharged by the collection mechanism 03; and the spraying mechanism 04 is activated to acid wash the water conservancy construction pipeline again, thereby improving the practicality of the equipment.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A rust removal device for the outer surface of a hydraulic construction pipeline, comprising a clamping mechanism (01); characterized in that, It also includes a pre-acid washing mechanism (02), a collection mechanism (03), a spraying mechanism (04), and a drying mechanism (05). The clamping mechanism (01) and the pre-acid washing mechanism (02) are both installed on the spraying mechanism (04). The pre-acid washing mechanism (02) is located below the clamping mechanism (01), the collection mechanism (03) is located below the spraying mechanism (04), and the drying mechanism (05) is located in front of the spraying mechanism (04). The drying mechanism (05) and the spraying mechanism (04) are connected.

2. The rust removal device for the outer surface of hydraulic construction pipelines as described in claim 1, characterized in that, The clamping mechanism (01) includes a bracket (11), a slide (12), a lead screw (13), a motor (14), two sets of sliders (15), two sets of electric cylinders (16), and two sets of electric clamps (17). The top of the slide (12) is mounted on the bracket (11), the lead screw (13) is mounted inside the slide (12), the output end of the motor (14) is connected to the right end of the lead screw (13), the interior of the two sets of sliders (15) is slidably mounted on the lead screw (13), the exterior of the two sets of sliders (15) is slidably mounted on the inner wall of the slide (12), the tops of the two sets of electric cylinders (16) are mounted on the two sets of sliders (15), and the two sets of electric clamps (17) are mounted on the bottom of the two sets of electric cylinders (16).

3. The rust removal device for the outer surface of hydraulic construction pipelines as described in claim 1, characterized in that, The pre-acid washing mechanism (02) includes a first filter screen (21), a first collection box (22), a first filter plate (23), a first circulation pump (24), a first three-way pipe (25), and two sets of first spray pipes (26). The bottom end of the first filter screen (21) is installed on the top end of the first collection box (22), the first filter plate (23) is installed on the inner wall of the first collection box (22), the input end of the first circulation pump (24) is connected to the outer wall of the first collection box (22), the input end of the first three-way pipe (25) is connected to the output end of the first circulation pump (24), the first three-way pipe (25) is provided with two sets of output ends, the input ends of the two sets of first spray pipes (26) are respectively connected to the two sets of output ends of the first three-way pipe (25), and multiple nozzles are respectively provided on the two sets of first three-way pipes (25).

4. The rust removal device for the outer surface of water conservancy construction pipelines as described in claim 1, characterized in that, The collection mechanism (03) includes a second filter screen (31), a second collection box (32), a second filter plate (33), and a drain pipe (34). The bottom end of the second filter screen (31) is installed on the top end of the second collection box (32), the second filter plate (33) is installed on the inner wall of the second collection box (32), the inlet end of the drain pipe (34) is connected to the outer wall of the second collection box (32), and a valve is provided on the outlet end of the drain pipe (34).

5. A rust removal device for the outer surface of a hydraulic construction pipeline as described in claim 1, characterized in that, The spraying mechanism (04) includes a workbench (41), two sets of drain plates (42), two sets of second spray pipes (43), a diversion pipe (44), a second circulation pump (45), and a second three-way pipe (46). The top of the workbench (41) is provided with two sets of drain plates (42), and the two sets of second spray pipes (43) are respectively installed on the top of the workbench (41). The diversion pipe (44) is provided with two sets of input ends and two sets of output ends. The input ends of the two sets of second spray pipes (43) are respectively connected to the two ends of the diversion pipe (44). The output end of the diverter pipe (44) is connected to the output end of the diverter pipe (44), and valves are respectively installed on the two input ends of the diverter pipe (44). The output end of the second circulation pump (45) is connected to one of the input ends of the diverter pipe (44), and the output end of the second three-way pipe (46) is connected to the input end of the second circulation pump (45). The second three-way pipe (46) is provided with two input ends, and the two input ends of the second three-way pipe (46) are respectively connected to the output ends of the pickling solution and the cleaning solution. Valves are respectively installed on the two input ends of the second three-way pipe (46).

6. A rust removal device for the outer surface of a hydraulic construction pipeline as described in claim 5, characterized in that, The drying mechanism (05) includes an air pump (51), a heating box (52), a third filter plate (53), a heater (54), and an air supply pipe (55). The output end of the air pump (51) is connected to the input end of the heating box (52). The third filter plate (53) and the heater (54) are respectively installed on the inner wall of the heating box (52). The third filter plate (53) is located to the left of the heater (54). The input end of the air supply pipe (55) is connected to the output end of the heating box (52). The output end of the air supply pipe (55) is connected to the other input end of the diverter pipe (44). A valve is provided on the output end of the air supply pipe (55).

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