Ring main unit surface pretreatment equipment

Abstract

The utility model relates to the technical field of surface pretreatment equipment, in particular to surface pretreatment equipment for a ring main unit, which rotates the ring main unit by starting a rotating mechanism and performs phosphating reaction on the polished surface of the ring main unit by starting a phosphating mechanism, so that an oxide layer is formed on the surface of the ring main unit, and meanwhile, the adhesiveness of a coating is improved. The ring main unit with the phosphatized surface is dried by starting the drying mechanism, so that the practicability of the equipment is improved; comprising a supporting mechanism; the device further comprises a rotating mechanism, a grinding mechanism, a moving mechanism, a dust collection mechanism, a phosphating mechanism and a drying mechanism, the rotating mechanism is installed in the supporting mechanism, the grinding mechanism is installed on the moving mechanism, the moving mechanism, the dust collection mechanism, the phosphating mechanism and the drying mechanism are all installed in the supporting mechanism, and the dust collection mechanism is located above the moving mechanism.

Description

Technical Field

[0001] This utility model relates to the technical field of surface pretreatment equipment, and in particular to a surface pretreatment equipment for a ring main unit. Background Technology

[0002] A ring main unit (RMU) is an electrical device consisting of a set of high-voltage switchgear housed in a metal or non-metal insulated cabinet or assembled into a modular ring network power supply unit. The working principle of a RMU is based on a ring distribution network, where the power supply trunk line forms a closed loop. Power is supplied to this loop trunk line, and then distributed outwards through high-voltage switches. The busbar of each outgoing cabinet in the RMU is also part of the loop trunk line. Since the rated current of these RMUs is relatively small, the high-voltage switches in RMUs generally do not use complex circuit breakers but rather simple high-voltage load switches with high-voltage fuses.

[0003] For example, the surface pretreatment equipment disclosed in the utility model patent with application number CN202420131451.8 represents a type of prior art. Its main structure includes a shell, an electric slide rail, a slider, a hydraulic cylinder, a connecting block, a rotating column, and a connecting rod. Surface pretreatment is achieved through the cooperation of the shell, electric slide rail, slider, hydraulic cylinder, connecting block, rotating column, and connecting rod.

[0004] Although the surface pretreatment equipment in the aforementioned patent can remove rust and dirt from the workpiece surface, the metal surface may have micropores and unevenness, which will affect the coating effect and adhesion of the paint, and thus affect the subsequent spraying effect. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a ring main unit surface pretreatment device that rotates the ring main unit by starting a rotating mechanism, performs a phosphating reaction on the polished surface of the ring main unit by starting a phosphating mechanism to form an oxide layer on the surface of the ring main unit, and increases the adhesion of the coating. The phosphating surface of the ring main unit is then dried by starting a drying mechanism, thereby improving the practicality of the equipment.

[0006] This utility model discloses a surface pretreatment device for ring main units, including a support mechanism; it also includes a rotating mechanism, a grinding mechanism, a moving mechanism, a dust collection mechanism, a phosphating mechanism, and a drying mechanism. The rotating mechanism is installed inside the support mechanism, the grinding mechanism is installed on the moving mechanism, and the moving mechanism, dust collection mechanism, phosphating mechanism, and drying mechanism are all installed inside the support mechanism. The dust collection mechanism is located above the moving mechanism. The ring main unit is placed on the rotating mechanism, which clamps and rotates the ring main unit. The grinding mechanism grinds the surface of the ring main unit, and the moving mechanism moves the grinding mechanism. Through the cooperation of the rotating mechanism, grinding mechanism, and moving mechanism, rust and dirt on the surface of the ring main unit are cleaned. During the cleaning process, the dust collection mechanism collects the debris generated during rust removal. The rotating mechanism rotates the ring main unit, and the phosphating mechanism performs a phosphating reaction on the ground surface of the ring main unit, forming an oxide layer and increasing the adhesion of the coating. The drying mechanism dries the phosphated surface of the ring main unit, improving the practicality of the equipment.

[0007] Preferably, the support mechanism includes a protective cover, a support platform, and a drain pipe. The support platform is located at the bottom inside the protective cover, and the inlet end of the drain pipe is connected to the outer wall of the protective cover and is located at the bottom of the protective cover. The protective cover supports the support platform, and the support platform supports the rotating mechanism. Sewage inside the protective cover is discharged through the drain pipe, improving the practicality of the equipment.

[0008] Preferably, the rotating mechanism includes multi-stage electric cylinders, multiple support plates, a rotating plate, a first motor, two sets of first electric cylinders, and two sets of fixed plates. The bottom ends of the multiple multi-stage electric cylinders are respectively mounted on the top of the support platform, the bottom ends of the support plates are mounted on the top of the multiple multi-stage electric cylinders, and the bottom end of the rotating plate is rotatably mounted on the support plate. The output end of the first motor is connected to the bottom end of the rotating plate. Two sets of baffles are provided at the top of the rotating plate. The fixed ends of the two sets of first electric cylinders are respectively mounted on the two sets of baffles of the rotating plate, and the two sets of fixed plates are respectively mounted on the moving ends of the two sets of first electric cylinders. By extending and retracting the multiple multi-stage electric cylinders, the support plate is raised and lowered. By placing the ring main unit on the rotating plate, the two sets of fixed plates are fixed to the ring main unit by extending the two sets of first electric cylinders respectively. By starting the first motor, the ring main unit is rotated via the rotating plate, thereby improving the practicality of the equipment.

[0009] Preferably, the grinding mechanism includes a first mounting plate, a guide rod, a second electric cylinder, a second mounting plate, a second motor, and a grinding wheel. The left end of the first mounting plate is mounted on the moving mechanism, the left ends of the guide rod and the second electric cylinder are both mounted on the right end of the first mounting plate, the right part of the guide rod is slidably mounted on the second mounting plate, the right end of the second electric cylinder is mounted on the left end of the second mounting plate, the second motor is mounted on the right end of the second mounting plate, and the grinding wheel is mounted on the output end of the second motor. The first mounting plate supports the guide rod and the second electric cylinder. By extending the second electric cylinder, the grinding wheel reaches the surface of the ring main unit. The guide rod guides the second electric cylinder, and the second mounting plate supports the second motor. By activating the second motor, the grinding wheel grinds the surface of the ring main unit, cleaning rust and dirt from the surface of the ring main unit and improving the practicality of the equipment.

[0010] Preferably, the moving mechanism includes a slide groove, a lead screw, a third motor, and a slider. The lead screw is installed inside the slide groove, and its rear end is connected to the output end of the third motor. The slider is slidably installed on the lead screw, and its outer side is slidably installed on the inner wall of the slide groove. By starting the third motor, the lead screw is rotated, and the slider is moved by the guide of the slide groove, thereby moving the grinding mechanism to grind the surface of the ring main unit and improve the practicality of the equipment.

[0011] Preferably, the dust collection mechanism includes a vacuum cleaner, a collection box, a first pipe, a dust collection pipe, and two sets of mounting rods. The input end of the vacuum cleaner is connected to the output end of the collection box. A baffle is provided inside the collection box, and an outlet is provided on the front wall of the collection box. The output end of the first pipe is connected to the input end of the collection box, and the output end of the dust collection pipe is connected to the input end of the first pipe. The dust collection pipe has multiple input ends. The dust collection pipe is mounted on the inner wall of the protective cover via two sets of mounting rods. By activating the vacuum cleaner, suction force is generated, and rust dust is collected through the dust collection pipe, allowing the rust dust to be discharged into the collection box through the first pipe. The two sets of mounting rods support the dust collection pipe, improving the practicality of the equipment.

[0012] Preferably, the phosphating mechanism includes a supply tank, a circulating pump, a second pipeline, and multiple spray pipes. The input end of the circulating pump extends into the supply tank, and the output end of the circulating pump is connected to the input end of the second pipeline. The second pipeline is provided with multiple output ends, and the input ends of the multiple spray pipes are respectively connected to the multiple output ends of the second pipeline. By starting the circulating pump, the phosphating solution in the supply tank is discharged through the second pipeline into the multiple spray pipes, and discharged through the multiple spray pipes to phosphate the cleaned ring main unit surface, thereby improving the practicality of the equipment.

[0013] Preferably, the drying mechanism includes a third pipe, an air pump, a fourth pipe, and multiple exhaust pipes. The output end of the third pipe is connected to the input end of the air pump, and a filter is installed inside the third pipe. The output end of the air pump is connected to the input end of the fourth pipe, and the fourth pipe has multiple output ends. The input ends of the multiple exhaust pipes are connected to the multiple output ends of the fourth pipe. By starting the air pump, airflow is discharged through the third pipe into the fourth pipe, and the surface of the phosphated ring main unit is dried through the multiple exhaust pipes, thereby improving the practicality of the equipment.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The ring main unit is placed on the rotating mechanism, which clamps and rotates the ring main unit. The surface of the ring main unit is polished by activating the grinding mechanism, and the grinding mechanism is moved by activating the moving mechanism. Through the cooperation of the rotating mechanism, the grinding mechanism, and the moving mechanism, the rust and dirt on the surface of the ring main unit are cleaned. During the cleaning process, the dust collection mechanism is activated to collect the debris generated during the rust removal process. The ring main unit is rotated by activating the rotating mechanism, and the phosphating mechanism is activated to carry out a phosphating reaction on the polished surface of the ring main unit, so that an oxide layer is formed on the surface of the ring main unit, while increasing the adhesion of the coating. The phosphating surface of the ring main unit is dried by activating the drying mechanism, thereby improving the practicality of the equipment. Attached Figure Description

[0015] Figure 1 This is an isometric sectional view of the present invention;

[0016] Figure 2 This is an isometric sectional view of the support mechanism of this utility model;

[0017] Figure 3 This is a right view of the rotating mechanism of this utility model;

[0018] Figure 4 This is an isometric schematic diagram of the grinding mechanism of this utility model;

[0019] Figure 5 This is an isometric schematic diagram of the moving mechanism of this utility model;

[0020] Figure 6 This is an isometric schematic diagram of the dust collection mechanism of this utility model;

[0021] Figure 7 This is an isometric schematic diagram of the phosphating mechanism of this utility model;

[0022] Figure 8 This is an isometric schematic diagram of the drying mechanism of this utility model.

[0023] In the attached diagram, the following are marked: 01, Support mechanism; 11, Protective cover; 12, Support platform; 13, Drain pipe; 02, Rotating mechanism; 21, Multi-stage electric cylinder; 22, Support plate; 23, Rotating plate; 24, First motor; 25, First electric cylinder; 26, Fixing plate; 03, Grinding mechanism; 31, First mounting plate; 32, Guide rod; 33, Second electric cylinder; 34, Second mounting plate; 35, Second motor; 36, Grinding wheel; 04, Moving... 41. Moving mechanism; 42. Screw; 43. Third motor; 44. Slider; 05. Dust collection mechanism; 51. Vacuum cleaner; 52. Collection box; 53. First pipe; 54. Dust collection pipe; 55. Mounting rod; 06. Phosphating mechanism; 61. Liquid supply tank; 62. Circulation pump; 63. Second pipe; 64. Spray pipe; 07. Drying mechanism; 71. Third pipe; 72. Air pump; 73. Fourth pipe; 74. Exhaust pipe. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] like Figure 1 As shown, a ring main unit surface pretreatment device includes a support mechanism 01; it also includes a rotating mechanism 02, a grinding mechanism 03, a moving mechanism 04, a dust collection mechanism 05, a phosphating mechanism 06, and a drying mechanism 07. The rotating mechanism 02 is installed inside the support mechanism 01, the grinding mechanism 03 is installed on the moving mechanism 04, and the moving mechanism 04, the dust collection mechanism 05, the phosphating mechanism 06, and the drying mechanism 07 are all installed inside the support mechanism 01. The dust collection mechanism 05 is located above the moving mechanism 04.

[0027] The ring main unit is placed on the rotating mechanism 02, which clamps and rotates it. The surface of the ring main unit is polished by the grinding mechanism 03, and the grinding mechanism 03 is moved by the moving mechanism 04. Through the cooperation of the rotating mechanism 02, the grinding mechanism 03, and the moving mechanism 04, the rust and dirt on the surface of the ring main unit are cleaned. During the cleaning process, the dust collection mechanism 05 is activated to collect the debris generated during the rust removal process. The ring main unit is rotated by the rotating mechanism 02. The phosphating mechanism 06 is activated to perform a phosphating reaction on the polished surface of the ring main unit, forming an oxide layer on the surface and increasing the adhesion of the coating. The phosphating surface of the ring main unit is dried by the drying mechanism 07, improving the practicality of the equipment.

[0028] like Figure 2As shown, the support mechanism 01 includes a protective cover 11, a support platform 12, and a drain pipe 13. The support platform 12 is located at the bottom inside the protective cover 11, and the inlet end of the drain pipe 13 is connected to the outer wall of the protective cover 11 and is located at the lower part of the protective cover 11.

[0029] like Figure 3 As shown, the rotating mechanism 02 includes multi-stage electric cylinders 21, multiple support plates 22, a rotating plate 23, a first motor 24, two sets of first electric cylinders 25, and two sets of fixed plates 26. The bottom ends of the multiple multi-stage electric cylinders 21 are respectively mounted on the top end of the support platform 12. The bottom end of the support plate 22 is mounted on the top end of the multiple multi-stage electric cylinders 21. The bottom end of the rotating plate 23 is rotatably mounted on the support plate 22. The output end of the first motor 24 is connected to the bottom end of the rotating plate 23. Two sets of baffles are provided on the top end of the rotating plate 23. The fixed ends of the two sets of first electric cylinders 25 are respectively mounted on the two sets of baffles of the rotating plate 23. The two sets of fixed plates 26 are respectively mounted on the moving ends of the two sets of first electric cylinders 25.

[0030] The protective cover 11 supports the support platform 12, which in turn supports the rotating mechanism 02. Sewage inside the protective cover 11 is discharged through the drain pipe 13. The support plate 22 is raised and lowered by extending and retracting multiple multi-stage electric cylinders 21. The ring main unit is placed on the rotating plate 23, and the two sets of first electric cylinders 25 are extended to fix the two sets of fixed plates 26 to the ring main unit. The ring main unit is rotated by starting the first motor 24 via the rotating plate 23, thereby improving the practicality of the equipment.

[0031] Example 2

[0032] like Figures 4 to 6As shown, based on Embodiment 1, it also includes a grinding mechanism 03, a moving mechanism 04, and a dust collection mechanism 05. The moving mechanism 04 includes a slide 41, a lead screw 42, a third motor 43, and a slider 44. The lead screw 42 is installed inside the slide 41, and its rear end is connected to the output end of the third motor 43. The slider 44 is slidably installed on the lead screw 42, and its outer side is slidably installed on the inner wall of the slide 41. The dust collection mechanism 05 includes a vacuum cleaner 51, a collection box 52, a first pipe 53, a dust collection pipe 54, and two sets of mounting rods 55. The input end of the vacuum cleaner 51 is connected to the output end of the collection box 52. A baffle is provided inside the collection box 52. The front wall of the device is provided with an outlet. The output end of the first pipe 53 is connected to the input end of the collection box 52. The output end of the dust collection pipe 54 is connected to the input end of the first pipe 53. The dust collection pipe 54 is provided with multiple input ends. The dust collection pipe 54 is installed on the inner wall of the protective cover 11 via two sets of mounting rods 55. The phosphating mechanism 06 includes a liquid supply tank 61, a circulation pump 62, a second pipe 63, and multiple spray pipes 64. The input end of the circulation pump 62 extends into the liquid supply tank 61. The output end of the circulation pump 62 is connected to the input end of the second pipe 63. The second pipe 63 is provided with multiple output ends. The input ends of the multiple spray pipes 64 are respectively connected to the multiple output ends of the second pipe 63.

[0033] The third motor 43 is activated to rotate the lead screw 42, which is guided by the slide groove 41 to move the slider 44, causing the grinding mechanism 03 to move and grind the surface of the ring main unit. The vacuum cleaner 51 is activated to generate suction force, and the rust dust is collected through the dust collection pipe 54. The rust dust is discharged into the collection box 52 through the first pipe 53. Two sets of mounting rods 55 support the dust collection pipe 54. The circulating pump 62 is activated to discharge the phosphorus solution in the liquid supply tank 61 through the second pipe 63 into multiple spray pipes 64. The solution is discharged through the multiple spray pipes 64 to phosphate the cleaned surface of the ring main unit, improving the practicality of the equipment.

[0034] Example 3

[0035] like Figure 7 and Figure 8As shown, based on Embodiment 1, it also includes a phosphating mechanism 06 and a drying mechanism 07. The phosphating mechanism 06 includes a liquid supply tank 61, a circulating pump 62, a second pipe 63, and multiple spray pipes 64. The input end of the circulating pump 62 extends into the liquid supply tank 61, and the output end of the circulating pump 62 is connected to the input end of the second pipe 63. The second pipe 63 is provided with multiple output ends, and the input ends of the multiple spray pipes 64 are respectively connected to the multiple output ends of the second pipe 63. The drying mechanism 07 includes a third pipe 71, an air pump 72, a fourth pipe 73, and multiple exhaust pipes 74. The output end of the third pipe 71 is connected to the input end of the air pump 72, and a filter is provided inside the third pipe 71. The output end of the air pump 72 is connected to the input end of the fourth pipe 73, and the fourth pipe 73 is provided with multiple output ends. The input ends of the multiple exhaust pipes 74 are connected to the multiple output ends of the fourth pipe 73.

[0036] By starting the circulation pump 62, the phosphorus solution in the supply tank 61 is discharged through the second pipe 63 into multiple spray pipes 64. The solution is discharged through the multiple spray pipes 64 to phosphate the cleaned ring main unit surface. By starting the air pump 72, the airflow is discharged through the third pipe 71 into the fourth pipe 73. The airflow is then discharged through multiple exhaust pipes 74 to dry the phosphated ring main unit surface, thereby improving the practicality of the equipment.

[0037] like Figures 1 to 8As shown, this utility model discloses a surface pretreatment device for a ring main unit. During operation, the protective cover 11 first supports the support platform 12, which in turn supports the rotating mechanism 02. Then, multiple multi-stage electric cylinders 21 are extended and retracted to raise and lower the support plate 22. The ring main unit is placed on the rotating plate 23. Two sets of first electric cylinders 25 are extended to fix the ring main unit in place by two sets of fixing plates 26. The first motor 24 is started, causing the ring main unit to rotate via the rotating plate 23. Then, the first mounting plate 31 supports the guide rod 32 and the second electric cylinder 33. The second electric cylinder 33 is extended, causing the grinding wheel 35 to reach the surface of the ring main unit. The guide rod 32 guides the second electric cylinder 33. The second mounting plate 34 supports the second motor 35. The second motor 35 is started, causing the grinding wheel 35 to grind the surface of the ring main unit, removing iron oxides from the surface. Rust and dirt are cleaned, and then the third motor 43 is started to rotate the lead screw 42, which moves the slider 44 through the slide groove 41, causing the grinding mechanism 03 to move and grind the surface of the ring main unit. After that, the vacuum cleaner 51 is started to generate suction force, and the rust dust is collected through the dust collection pipe 54. The rust dust is discharged into the collection box 52 through the first pipe 53. Two sets of mounting rods 55 support the dust collection pipe 54. Then, the circulating pump 62 is started to discharge the phosphate solution in the supply tank 61 through the second pipe 63 into multiple spray pipes 64. The solution is discharged through the multiple spray pipes 64 to phosphate the cleaned surface of the ring main unit. The sewage in the protective cover 11 is discharged through the sewage pipe 13. Finally, the air pump 72 is started to discharge the air through the third pipe 71 into the fourth pipe 73. The air is then discharged through multiple exhaust pipes 74 to dry the phosphated surface of the ring main unit, improving the practicality of the equipment.

[0038] The multi-stage electric cylinder 21, first motor 24, second motor 35, third motor 43, vacuum cleaner 51, circulation pump 62 and air pump 72 of this utility model are purchased from the market. 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.

[0039] The main functions achieved by this utility model are: to rotate the ring main unit by starting the rotating mechanism 02, to carry out the phosphating reaction on the surface of the polished ring main unit by starting the phosphating mechanism 06, so that an oxide layer is formed on the surface of the ring main unit, and at the same time, the adhesion of the coating is increased; and to dry the phosphated surface of the ring main unit by starting the drying mechanism 07, thereby improving the practicality of the equipment.

[0040] 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 surface pretreatment device for a ring main unit, comprising a support mechanism (01); characterized in that, It also includes a rotating mechanism (02), a grinding mechanism (03), a moving mechanism (04), a dust collection mechanism (05), a phosphating mechanism (06), and a drying mechanism (07). The rotating mechanism (02) is installed inside the support mechanism (01), the grinding mechanism (03) is installed on the moving mechanism (04), and the moving mechanism (04), the dust collection mechanism (05), the phosphating mechanism (06), and the drying mechanism (07) are all installed inside the support mechanism (01). The dust collection mechanism (05) is located above the moving mechanism (04).

2. The surface pretreatment equipment for ring main units as described in claim 1, characterized in that, The support mechanism (01) includes a protective cover (11), a support platform (12) and a drain pipe (13). The support platform (12) is located at the bottom inside the protective cover (11). The inlet end of the drain pipe (13) is connected to the outer wall of the protective cover (11) and is located at the bottom of the protective cover (11).

3. The surface pretreatment equipment for ring main units as described in claim 2, characterized in that, The rotating mechanism (02) includes a multi-stage electric cylinder (21), multiple support plates (22), a rotating plate (23), a first motor (24), two sets of first electric cylinders (25), and two sets of fixed plates (26). The bottom ends of the multiple multi-stage electric cylinders (21) are respectively installed on the top end of the support platform (12). The bottom end of the support plate (22) is installed on the top end of the multiple multi-stage electric cylinders (21). The bottom end of the rotating plate (23) is rotatably installed on the support plate (22). The output end of the first motor (24) is connected to the bottom end of the rotating plate (23). Two sets of baffles are provided on the top end of the rotating plate (23). The fixed ends of the two sets of first electric cylinders (25) are respectively installed on the two sets of baffles of the rotating plate (23). The two sets of fixed plates (26) are respectively installed on the moving ends of the two sets of first electric cylinders (25).

4. The surface pretreatment equipment for ring main units as described in claim 1, characterized in that, The grinding mechanism (03) includes a first mounting plate (31), a guide rod (32), a second electric cylinder (33), a second mounting plate (34), a second motor (35), and a grinding wheel (36). The left end of the first mounting plate (31) is mounted on the moving mechanism (04). The left ends of the guide rod (32) and the second electric cylinder (33) are both mounted on the right end of the first mounting plate (31). The right part of the guide rod (32) is slidably mounted on the second mounting plate (34). The right end of the second electric cylinder (33) is mounted on the left end of the second mounting plate (34). The second motor (35) is mounted on the right end of the second mounting plate (34). The grinding wheel (36) is mounted on the output end of the second motor (35).

5. The surface pretreatment equipment for ring main units as described in claim 2, characterized in that, The moving mechanism (04) includes a slide (41), a lead screw (42), a third motor (43), and a slider (44). The lead screw (42) is installed inside the slide (41), and the rear end of the lead screw (42) is connected to the output end of the third motor (43). The slider (44) is slidably installed on the lead screw (42), and the outer side of the slider (44) is slidably installed on the inner wall of the slide (41).

6. The surface pretreatment equipment for ring main units as described in claim 2, characterized in that, The vacuuming mechanism (05) includes a vacuum cleaner (51), a collection box (52), a first pipe (53), a dust collection pipe (54), and two sets of mounting rods (55). The input end of the vacuum cleaner (51) is connected to the output end of the collection box (52). A baffle is provided inside the collection box (52). An outlet is provided on the front wall of the collection box (52). The output end of the first pipe (53) is connected to the input end of the collection box (52). The output end of the dust collection pipe (54) is connected to the input end of the first pipe (53). The dust collection pipe (54) is provided with multiple input ends. The dust collection pipe (54) is installed on the inner wall of the protective cover (11) via two sets of mounting rods (55).

7. The surface pretreatment equipment for ring main units as described in claim 1, characterized in that, The phosphating mechanism (06) includes a liquid supply tank (61), a circulation pump (62), a second pipe (63), and multiple spray pipes (64). The input end of the circulation pump (62) extends into the liquid supply tank (61), and the output end of the circulation pump (62) is connected to the input end of the second pipe (63). Multiple output ends are provided on the second pipe (63), and the input ends of the multiple spray pipes (64) are respectively connected to the multiple output ends of the second pipe (63).

8. The surface pretreatment equipment for ring main units as described in claim 2, characterized in that, The drying mechanism (07) includes a third pipe (71), an air pump (72), a fourth pipe (73), and multiple exhaust pipes (74). The output end of the third pipe (71) is connected to the input end of the air pump (72). A filter is installed inside the third pipe (71). The output end of the air pump (72) is connected to the input end of the fourth pipe (73). The fourth pipe (73) is provided with multiple output ends. The input ends of the multiple exhaust pipes (74) are connected to the multiple output ends of the fourth pipe (73).

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