A device for spraying anti-rust paint on the surface of a tank

Abstract

This utility model discloses a device for spraying anti-rust paint on the surface of a tank, including a machine body. A motor is located at the top of the machine body, and a turntable is rotatably connected to the middle of the top of the machine body. The output end of the motor is connected to the bottom end of the turntable. A bidirectional screw is horizontally arranged on the turntable, and pressure blocks are symmetrically connected to two threads in different directions on the bidirectional screw. A protective cover is provided on the top of the machine body, and a spray pipe is located inside the protective cover. The spray pipe is L-shaped. A support rod is provided on the back of the machine body, and a drive cylinder is located at the top of the support rod. The output end of the drive cylinder is connected to the top of the protective cover for driving the protective cover to rise and fall. This utility model can efficiently spray anti-rust paint onto the surface of the tank through the spray nozzle, covering all areas of the tank except the open end, achieving full coverage of the tank. Simultaneously, the protective cover can prevent the spread of paint mist, avoiding any impact on the health of workers.

Description

Technical Field

[0001] This utility model relates to the field of spraying equipment technology, specifically to a device for spraying anti-rust paint on the surface of a tank. Background Technology

[0002] In the chemical, food, and energy industries, various metal tanks are widely used to store liquids, gases, or solid materials. Surface rust prevention treatment is a crucial step in ensuring the service life and safety of these tanks. Currently, rust-preventive paint application on tank surfaces mainly relies on two methods: manual spraying and spraying equipment, but both have significant drawbacks. When spraying manually, operators hold spray guns to apply the coating to the tank surface. This process is not only labor-intensive and inefficient, but the coating quality also heavily relies on the operator's skill level. Problems such as uneven coating thickness, missed areas, and runs are common, leading to insufficient rust prevention in certain areas of the tank and shortening its service life. Furthermore, the volatile organic compounds (VOCs) in the rust-preventive paint can damage the operator's respiratory system and skin, posing serious occupational health hazards.

[0003] A continuous rust-prevention spraying device for tanks, as disclosed in utility model patent CN221453034U, includes a chassis base. A waste collection assembly is located at the upper end of the chassis base, and rotating components are connected to both sides of the chassis base. Each rotating component includes a rotary motor, an extension rod, screws, a support base, a support plate, and a fixing pin. The rotary motor is connected to both sides of the chassis base, and an extension rod is connected to the inner wall of the rotary motor. Screws pass through the middle of the extension rod and the rotary motor. A support base is located in the middle section of the extension rod, and a support plate is connected to the inner wall of the support base. A fixing pin passes through the middle of the support base and the support plate. A tank is inserted into the middle of the rotating component. By activating the rotary motor, the extension rod and support base move in a circular motion, and the tank fitted onto the upper end of the support base simultaneously rotates in a circular motion, improving the painting effect of the tank.

[0004] Although the spraying equipment provided by the aforementioned patent improves the painting effect to some extent, it can only perform anti-rust spraying on the sides of the tank, and cannot perform anti-rust spraying on the bottom of the tank. In addition, paint mist will spread during the spraying process, affecting the health of the workers. Utility Model Content

[0005] The purpose of this utility model is to provide a rust-preventive paint spraying device for tank surfaces, which aims to improve the existing spraying devices that can only spray rust prevention on the sides of the tank, but cannot spray rust prevention on the bottom of the tank, and the paint mist will spread during the spraying process, thus affecting the health of the workers.

[0006] This utility model is implemented as follows: A device for spraying anti-rust paint on the surface of a tank includes a machine body. A motor is installed at the top of the inner side of the machine body. A turntable is rotatably connected to the middle of the top of the machine body. The output end of the motor is connected to the bottom end of the turntable. A bidirectional screw is provided horizontally on the turntable. Two pressure blocks are symmetrically connected to the threads in different directions on the bidirectional screw. A protective cover is provided on the top of the machine body. A spray pipe is provided inside the protective cover. The spray pipe is L-shaped. A support rod is provided on the back of the machine body. A drive cylinder is provided at the top of the support rod. The output end of the drive cylinder is connected to the top of the protective cover for driving the protective cover to rise and fall.

[0007] Preferably, the front of the machine body is provided with a control panel, the top center of the machine body is provided with a first bearing, and the bottom corners of the machine body are provided with support feet. The top of the machine body is provided with a limiting ring along the outer side of the turntable, and the bottom of the limiting ring is provided with a drain hole.

[0008] Preferably, the support rod is L-shaped, and the top of the support rod is provided with a through hole aligned with the position of the protective cover; the bottom of the inner side of the machine body is provided with a connecting slot, and the bottom of the side of the machine body is provided with a connecting wire, the end of which is provided with a power plug.

[0009] Preferably, the junction box of the motor is provided with a connecting wire, the end of the connecting wire is provided with a connecting plug, and the connecting plug is electrically connected to the machine body; a fixing plate is provided at the position of the motor attached to the top of the inner side of the machine body, the edge of the fixing plate is provided with multiple fixing holes, and the output end of the motor is provided with a drive shaft, the middle of the drive shaft is provided with a plug shaft.

[0010] Preferably, the top of the turntable is provided with a guide groove in the horizontal direction, and a second bearing is provided at both ends of the guide groove. A through hole is provided on the side of the turntable aligned with the position of one of the second bearings. A connecting shaft is provided in the middle of the bottom surface of the turntable, and a drive slot is provided at the bottom of the connecting shaft. The connecting shaft is connected to the drive slot.

[0011] Preferably, both ends of the bidirectional screw are provided with adapters, the diameter of the adapters is larger than the diameter of the bidirectional screw, the adapters at the end of the bidirectional screw aligned with the through hole protrude from the through hole, and the end of the adapters protruding from the through hole is provided with a rotating handle.

[0012] Preferably, the pressure block has a rubber pad on the side facing the outside of the turntable, and a connecting block is provided at the bottom of the pressure block. The connecting block has a threaded hole in the middle, and the threaded hole is threadedly connected to the bidirectional screw.

[0013] Preferably, the drive cylinder has a retaining plate on both sides of its bottom, which engages with both sides of the support rod. The retaining plate has multiple bolt holes, and the drive cylinder is fixed to the support rod by bolts. The output end of the drive cylinder has a telescopic rod, and the bottom end of the telescopic rod has a limiting pressure plate. The bottom surface of the limiting pressure plate has a stud, which passes through the protective cover, and the end of the stud that passes through the protective cover has a pressure cap.

[0014] Preferably, the bottom end of the nozzle inside the protective cover extends out from the inside of the protective cover, and a connecting pipe is provided at one end of the nozzle extending out of the protective cover, and a connecting cap is provided at the end of the connecting pipe; multiple nozzles are evenly arranged on the side of the nozzle facing the turntable.

[0015] Preferably, it also includes an inspection cover, an inspection port is provided on the back of the machine body, the inspection port is provided with slots at the top and bottom, the inspection cover is provided with a retaining edge at the top and bottom, the retaining edge engages with the inside of the slot, and the inspection cover is provided with multiple heat dissipation holes, and the outer side of the inspection cover is provided with a pull groove for disassembling and assembling the inspection cover.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model features a motor installed inside the machine body, with the motor output connected to a turntable. The motor output drives the turntable to rotate, and the turntable, via a bidirectional screw and pressure block, can press the tank from the inside of the tank opening, facilitating tank stability. The turntable drives the tank to rotate, while the inner wall of the protective cover is equipped with a spray pipe with a nozzle. The nozzle efficiently sprays anti-rust paint onto the surface of the tank, covering all areas except the opening, ensuring complete coverage. Simultaneously, the protective cover prevents the spread of paint mist, avoiding its impact on the health of workers.

[0017] 2. This utility model has an inspection cover on the back of the machine body, which makes it easy to open the back of the machine body, thereby facilitating the inspection and maintenance of the internal parts of the machine body and making the entire machine body easier to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the body of this utility model from a front-end oblique downward view; Figure 3 This is a structural schematic diagram of the body of this utility model from a rear-end oblique downward view; Figure 4 This is a schematic diagram of the structure of the motor of this utility model; Figure 5 This is a schematic diagram of the structure of the turntable of this utility model from a tilted rear view. Figure 6This is a schematic diagram of the structure of the turntable of this utility model from a front-end oblique tilting angle; Figure 7 This is a schematic diagram of the structure of the bidirectional screw of this utility model; Figure 8 This is a schematic diagram of the structure of the pressure block of this utility model; Figure 9 This is a schematic diagram of the structure of the drive cylinder of this utility model; Figure 10 This is a schematic diagram of the structure of the protective cover of this utility model; Figure 11 This is a schematic diagram of the structure of the inspection cover of this utility model.

[0019] In the diagram: 1. Body; 10. Control panel; 11. Support leg; 12. Limit ring; 121. Leakage hole; 13. First bearing; 14. Support rod; 141. Through hole; 15. Inspection port; 16. Connecting slot; 17. Connecting wire; 171. Connecting plug; 18. Slot; 2. Motor; 21. Connecting wire; 22. Connecting plug; 23. Fixing plate; 24. Fixing hole; 25. Drive shaft; 26. Plug-in shaft; 3. Turntable; 31. Guide groove; 32. Second bearing; 33. Through... 34. Hole; 35. Adapter shaft; 4. Drive slot; 4. Bidirectional screw; 41. Adapter part; 42. Rotary handle; 5. Pressure block; 51. Rubber pad; 52. Connecting block; 53. Threaded hole; 6. Drive cylinder; 61. Clamping plate; 62. Bolt hole; 63. Telescopic rod; 64. Limiting pressure plate; 65. Stud; 66. Pressure cap; 7. Protective cover; 71. Spray pipe; 72. Nozzle; 73. Connecting pipe; 74. Connecting cap; 8. Inspection cover; 81. Clamping edge; 82. Groove; 83. Heat dissipation hole. Detailed implementation method: In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: Example 1 like Figure 1 and Figure 10As shown, a rust-preventive paint spraying device for a tank surface includes a body 1. A motor 2 is located at the top inner side of the body 1, and a turntable 3 is rotatably connected to the middle of the top of the body 1. The output end of the motor 2 is connected to the bottom end of the turntable 3. This structure facilitates the rotation of the turntable 3 by the motor 2, which in turn drives the tank to rotate. The body 1 facilitates the control of the entire equipment's operation and use. A bidirectional screw 4 is horizontally mounted on the turntable 3. Two pressure blocks 5 are symmetrically connected to the two threads in different directions on the bidirectional screw 4. The bidirectional screw 4 drives the pressure blocks 5 to move, thus facilitating the clamping and fixing of the tank from the inside of the tank via the pressure blocks 5, ensuring the tank is stable on the turntable 3. A protective cover 7 is located at the top of the body 1, which covers the turntable 3 to prevent paint mist from spreading during tank spraying. A spray pipe 71 is located inside the protective cover 7. The spray pipe 71 is L-shaped, allowing the spray pipe 71 to spray rust-preventive paint onto the sides and top of the tank. A support rod 14 is provided on the back of the machine body 1, and a drive cylinder 6 is provided at the top of the support rod 14. The support rod 14 is used to support the drive cylinder 6, so that the drive cylinder 6 can drive the protective cover 7 to rise and fall. The output end of the drive cylinder 6 is connected to the top of the protective cover 7, and is used to drive the protective cover 7 to rise and fall. The drive cylinder 6 is one of a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder.

[0021] like Figure 2 and Figure 3 As shown, the front of the machine body 1 is equipped with a control panel 10, which facilitates the operation of the machine body 1 and its flexible use. A first bearing 13 is located at the center of the top of the machine body 1, which allows for easy rotational connection with the turntable 3. Support feet 11 are located at the corners of the bottom surface of the machine body 1, providing stable support. A limiting ring 12 is located on the top of the machine body 1 along the outer side of the turntable 3, with a perforation 121 at its bottom. The limiting ring 12 is easily inserted into the inner side of the protective cover 7 to limit its movement. The support rod 14 is L-shaped, with a through hole 141 at its top aligned with the protective cover 7. The support rod 14 facilitates the installation of the drive cylinder 6, ensuring stable operation. A connecting slot 16 is located on the bottom inner side of the machine body 1, allowing for electrical connection between the motor 2 and the machine body 1. Furthermore, a power cord 17 is provided on the bottom side of the machine body 1, and a power plug 171 is provided at the end of the power cord 17. The combination of the power cord 17 and the power plug 171 facilitates power supply to the machine body 1 and facilitates the operation of the machine body 1.

[0022] like Figure 4As shown, the junction box of motor 2 is equipped with a connecting wire 21, and the end of the connecting wire 21 is equipped with a connecting plug 22, which is electrically connected to the body 1. The connection between the connecting wire 21 and the connecting plug 22 facilitates the power connection and operation of the body 1, making it convenient to use. A fixing plate 23 is located on the inner top of the body 1, and the edge of the fixing plate 23 has multiple fixing holes 24. The connection between the fixing plate 23 and the fixing holes 24 facilitates the fixing of the motor 2 with bolts, ensuring the motor 2 is stable on the inner top of the body 1. Furthermore, the output end of motor 2 is equipped with a drive shaft 25, and the middle of the drive shaft 25 is equipped with a plug shaft 26, facilitating the rotation of the turntable 3 by motor 2.

[0023] like Figure 5 and Figure 6 As shown, the top of the turntable 3 has a horizontal guide groove 31, and both ends of the guide groove 31 are equipped with second bearings 32. The cooperation between the guide groove 31 and the second bearings 32 facilitates rotational connection with the bidirectional screw 4, allowing the bidirectional screw 4 to drive the pressure block 5 to move. A through hole 33 is provided on the side of the turntable 3, aligned with one of the second bearings 32; the through hole 33 allows one end of the bidirectional screw 4 to pass through the turntable 3. A transition shaft 34 is provided in the middle of the bottom surface of the turntable 3, facilitating an interference fit between the turntable 3 and the first bearing 13. A drive slot 35 is provided at the bottom of the transition shaft 34, and a connecting shaft 26 is connected to the drive slot 35 to facilitate rotation of the turntable 3.

[0024] like Figure 7 As shown, both ends of the bidirectional screw 4 are provided with adapter portions 41. The diameter of the adapter portion 41 is larger than the diameter of the bidirectional screw 4, which facilitates the assembly and use of the bidirectional screw 4. The adapter portion 41 at one end of the bidirectional screw 4 aligned with the through hole 33 protrudes from the through hole 33. The end of the adapter portion 41 protruding from the through hole 33 is provided with a rotating handle 42. The rotating handle 42 facilitates the rotation of the bidirectional screw 4, which in turn facilitates the movement of the pressure block 5.

[0025] like Figure 8 As shown, a rubber pad 51 is provided on the side of the pressure block 5 facing the outside of the turntable 3. The rubber pad 51 is to prevent the pressure block 5 from damaging the tank. The bottom end of the pressure block 5 is provided with a connecting block 52, and the middle of the connecting block 52 is provided with a threaded hole 53. The threaded hole 53 is threadedly connected to the bidirectional screw 4, which facilitates the bidirectional screw 4 to drive the pressure block 5 to move.

[0026] like Figure 9As shown, the drive cylinder 6 has clamping plates 61 on both sides of its bottom. The clamping plates 61 engage with both sides of the support rod 14. The clamping plates 61 have multiple bolt holes 62, and the drive cylinder 6 is fixed to the support rod 14 by bolts, ensuring that the drive cylinder 6 is stably installed on the support rod 14. The output end of the drive cylinder 6 has a telescopic rod 63, and the bottom end of the telescopic rod 63 has a limiting pressure plate 64. The bottom surface of the limiting pressure plate 64 has a stud 65, which passes through the protective cover 7. One end of the stud 65 that passes through the protective cover 7 has a pressure cap 66. The telescopic rod 63 facilitates the drive cylinder 6 to move the protective cover 7 up and down.

[0027] like Figure 10 As shown, the bottom end of the spray pipe 71 inside the protective cover 7 extends out from the inside of the protective cover 7, and a connecting pipe 73 is provided at one end of the spray pipe 71 extending out of the protective cover 7. A connecting cap 74 is provided at the end of the connecting pipe 73. The connection of the connecting pipe 73 and the connecting cap 74 is for easy connection to an external paint supply device, so that the paint supply device can deliver the anti-rust paint to the inside of the spray pipe 71. Multiple nozzles 72 are evenly arranged on the side of the spray pipe 71 facing the turntable 3. The nozzles 72 are for easy spraying of anti-rust paint onto the surface of the tank.

[0028] Example 2 like Figure 1 and Figure 10 As shown, a rust-preventive paint spraying device for a tank surface includes a body 1. A motor 2 is located at the top inner side of the body 1, and a turntable 3 is rotatably connected to the middle of the top of the body 1. The output end of the motor 2 is connected to the bottom end of the turntable 3. This structure facilitates the rotation of the turntable 3 by the motor 2, which in turn drives the tank to rotate. The body 1 facilitates the control of the entire equipment's operation and use. A bidirectional screw 4 is horizontally mounted on the turntable 3. Two pressure blocks 5 are symmetrically connected to the two threads in different directions on the bidirectional screw 4. The bidirectional screw 4 drives the pressure blocks 5 to move, thus facilitating the clamping and fixing of the tank from the inside of the tank via the pressure blocks 5, ensuring the tank is stable on the turntable 3. A protective cover 7 is located at the top of the body 1, which covers the turntable 3 to prevent paint mist from spreading during tank spraying. A spray pipe 71 is located inside the protective cover 7. The spray pipe 71 is L-shaped, allowing the spray pipe 71 to spray rust-preventive paint onto the sides and top of the tank. A support rod 14 is provided on the back of the machine body 1, and a drive cylinder 6 is provided at the top of the support rod 14. The support rod 14 is used to support the drive cylinder 6, so that the drive cylinder 6 can drive the protective cover 7 to rise and fall. The output end of the drive cylinder 6 is connected to the top of the protective cover 7, and is used to drive the protective cover 7 to rise and fall. The drive cylinder 6 is one of a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder.

[0029] like Figure 2 and Figure 3As shown, the front of the machine body 1 is equipped with a control panel 10, which facilitates the operation of the machine body 1 and its flexible use. A first bearing 13 is located at the center of the top of the machine body 1, which allows for easy rotational connection with the turntable 3. Support feet 11 are located at the corners of the bottom surface of the machine body 1, providing stable support. A limiting ring 12 is located on the top of the machine body 1 along the outer side of the turntable 3, with a perforation 121 at its bottom. The limiting ring 12 is easily inserted into the inner side of the protective cover 7 to limit its movement. The support rod 14 is L-shaped, with a through hole 141 at its top aligned with the protective cover 7. The support rod 14 facilitates the installation of the drive cylinder 6, ensuring stable operation. A connecting slot 16 is located on the bottom inner side of the machine body 1, allowing for electrical connection between the motor 2 and the machine body 1. Furthermore, a power cord 17 is provided on the bottom side of the machine body 1, and a power plug 171 is provided at the end of the power cord 17. The combination of the power cord 17 and the power plug 171 facilitates power supply to the machine body 1 and facilitates the operation of the machine body 1.

[0030] like Figure 4 As shown, the junction box of motor 2 is equipped with a connecting wire 21, and the end of the connecting wire 21 is equipped with a connecting plug 22, which is electrically connected to the body 1. The connection between the connecting wire 21 and the connecting plug 22 facilitates the power connection and operation of the body 1, making it convenient to use. A fixing plate 23 is located on the inner top of the body 1, and the edge of the fixing plate 23 has multiple fixing holes 24. The connection between the fixing plate 23 and the fixing holes 24 facilitates the fixing of the motor 2 with bolts, ensuring the motor 2 is stable on the inner top of the body 1. Furthermore, the output end of motor 2 is equipped with a drive shaft 25, and the middle of the drive shaft 25 is equipped with a plug shaft 26, facilitating the rotation of the turntable 3 by motor 2.

[0031] like Figure 5 and Figure 6 As shown, the top of the turntable 3 has a horizontal guide groove 31, and both ends of the guide groove 31 are equipped with second bearings 32. The cooperation between the guide groove 31 and the second bearings 32 facilitates rotational connection with the bidirectional screw 4, allowing the bidirectional screw 4 to drive the pressure block 5 to move. A through hole 33 is provided on the side of the turntable 3, aligned with one of the second bearings 32; the through hole 33 allows one end of the bidirectional screw 4 to pass through the turntable 3. A transition shaft 34 is provided in the middle of the bottom surface of the turntable 3, facilitating an interference fit between the turntable 3 and the first bearing 13. A drive slot 35 is provided at the bottom of the transition shaft 34, and a connecting shaft 26 is connected to the drive slot 35 to facilitate rotation of the turntable 3.

[0032] like Figure 7As shown, both ends of the bidirectional screw 4 are provided with adapter portions 41. The diameter of the adapter portion 41 is larger than the diameter of the bidirectional screw 4, which facilitates the assembly and use of the bidirectional screw 4. The adapter portion 41 at one end of the bidirectional screw 4 aligned with the through hole 33 protrudes from the through hole 33. The end of the adapter portion 41 protruding from the through hole 33 is provided with a rotating handle 42. The rotating handle 42 facilitates the rotation of the bidirectional screw 4, which in turn facilitates the movement of the pressure block 5.

[0033] like Figure 8 As shown, a rubber pad 51 is provided on the side of the pressure block 5 facing the outside of the turntable 3. The rubber pad 51 is to prevent the pressure block 5 from damaging the tank. The bottom end of the pressure block 5 is provided with a connecting block 52, and the middle of the connecting block 52 is provided with a threaded hole 53. The threaded hole 53 is threadedly connected to the bidirectional screw 4, which facilitates the bidirectional screw 4 to drive the pressure block 5 to move.

[0034] like Figure 9 As shown, the drive cylinder 6 has clamping plates 61 on both sides of its bottom. The clamping plates 61 engage with both sides of the support rod 14. The clamping plates 61 have multiple bolt holes 62, and the drive cylinder 6 is fixed to the support rod 14 by bolts, ensuring that the drive cylinder 6 is stably installed on the support rod 14. The output end of the drive cylinder 6 has a telescopic rod 63, and the bottom end of the telescopic rod 63 has a limiting pressure plate 64. The bottom surface of the limiting pressure plate 64 has a stud 65, which passes through the protective cover 7. One end of the stud 65 that passes through the protective cover 7 has a pressure cap 66. The telescopic rod 63 facilitates the drive cylinder 6 to move the protective cover 7 up and down.

[0035] like Figure 10 As shown, the bottom end of the spray pipe 71 inside the protective cover 7 extends out from the inside of the protective cover 7, and a connecting pipe 73 is provided at one end of the spray pipe 71 extending out of the protective cover 7. A connecting cap 74 is provided at the end of the connecting pipe 73. The connection of the connecting pipe 73 and the connecting cap 74 is for easy connection to an external paint supply device, so that the paint supply device can deliver the anti-rust paint to the inside of the spray pipe 71. Multiple nozzles 72 are evenly arranged on the side of the spray pipe 71 facing the turntable 3. The nozzles 72 are for easy spraying of anti-rust paint onto the surface of the tank.

[0036] like Figure 1 , Figure 3 and Figure 11 As shown, it also includes an inspection cover 8, which facilitates opening the rear opening of the body 1. An inspection port 15 is located on the back of the body 1. The inspection port 15 has slots 18 at both the top and bottom. The inspection cover 8 has retaining edges 81 at both the top and bottom, which engage with the inner side of the slots 18. This structure facilitates the inspection cover 8's engagement with the inner side of the inspection port 15, ensuring its stability. The inspection cover 8 also has multiple ventilation holes 83 for facilitating heat dissipation from the body 1. A pull groove 82 is provided on the outer side of the inspection cover 8 for easy installation and removal.

[0037] Working Principle: In use, the machine body 1 is first powered through the connecting wire 17 and the power plug 171. The machine body 1 is electrically connected to the motor 2 via the connecting wire 21 and the connecting plug 22 to achieve power supply. The can is placed on the turntable 3, and the rotating handle 42 of the bidirectional screw 4 is rotated. The bidirectional screw 4 rotates in cooperation with the guide groove 31 and the second bearing 32, driving the two pressure blocks 5 to move towards each other along the guide groove 31. The pressure blocks 5 press and fix the can body from the inside, and the rubber pad 51 prevents damage to the can body. Subsequently, the control panel 10 controls the operation of the drive cylinder 6 (one of a pneumatic cylinder, electric cylinder, or hydraulic cylinder). The drive cylinder 6 drives the protective cover 7 to descend via the telescopic rod 63. The inner side of the protective cover 7 cooperates with the limit ring 12 to achieve limit positioning, simultaneously covering the turntable 3 and the can body to prevent paint mist from spreading. Next, the external paint supply equipment delivers the anti-rust paint to the spray nozzle 71 through the connecting pipe 73 and the connecting cap 74. Multiple nozzles 72 on the L-shaped spray nozzle 71 can spray the sides and top of the tank. During this process, the motor 2, through the drive shaft 25 and the plug shaft 26, engages with the drive slot 35 of the turntable 3, driving the turntable 3 to rotate under the support of the first bearing 13, ensuring the tank rotates synchronously and the spraying is uniform. Any excess paint generated during spraying can flow out through the drain hole 121 at the bottom of the limit ring 12. The heat generated by the machine body 1 during operation is dissipated through the heat dissipation holes 83 on the inspection cover 8, ensuring stable equipment operation. After spraying is completed, the drive cylinder 6 lifts the protective cover 7, and the handle 42 is rotated in the opposite direction to release the pressure block 5, allowing the tank to be removed.

[0038] In summary, compared with the prior art, this application provides a motor 2 inside the body 1, with the output end of the motor 2 connected to the turntable 3. The output end of the motor 2 drives the turntable 3 to rotate. The turntable 3, through a bidirectional screw 4 and a pressure block 5, can press the tank from the inside of the tank opening, facilitating the stability of the tank. The turntable 3 can drive the tank to rotate. The inner wall of the protective cover 7 is provided with a spray pipe 71, and the spray pipe 71 is provided with a nozzle 72. The nozzle 72 can efficiently spray anti-rust paint onto the surface of the tank, covering all areas of the tank except the opening, thus achieving full coverage of the anti-rust paint. At the same time, the protective cover 7 can prevent the spread of paint mist, avoiding the paint mist from affecting the health of the workers.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A can body surface rust preventive paint spraying device comprising a machine body (1), characterized in that, The machine body (1) has a motor (2) at the top of its inner side. A turntable (3) is rotatably connected to the middle of the top of the machine body (1). The output end of the motor (2) is connected to the bottom end of the turntable (3). A bidirectional screw (4) is provided horizontally on the turntable (3). Two threads in different directions on the bidirectional screw (4) are symmetrically connected to pressure blocks (5). A protective cover (7) is provided on the top of the machine body (1). A nozzle (71) is provided inside the protective cover (7). The nozzle (71) is L-shaped. A support rod (14) is provided on the back of the machine body (1). A drive cylinder (6) is provided at the top of the support rod (14). The output end of the drive cylinder (6) is connected to the top of the protective cover (7) to drive the protective cover (7) to rise and fall.

2. The can body surface anti-rust paint spraying device according to claim 1, characterized in that, The front of the machine body (1) is provided with a control panel (10), the top center of the machine body (1) is provided with a first bearing (13), and the bottom corners of the machine body (1) are provided with support feet (11). The top of the machine body (1) is provided with a limiting ring (12) along the outside of the turntable (3), and the bottom of the limiting ring (12) is provided with a leakage hole (121).

3. The can body surface anti-rust paint spraying device according to claim 2, characterized in that, The support rod (14) is L-shaped, and the top of the support rod (14) is provided with a through hole (141) aligned with the protective cover (7); the bottom of the inner side of the body (1) is provided with a connecting slot (16), and the bottom of the side of the body (1) is provided with a connecting wire (17), and the end of the connecting wire (17) is provided with a power plug (171).

4. The can body surface anti-rust paint spraying device according to claim 1, characterized in that, The junction box of the motor (2) is provided with a connecting wire (21), and the end of the connecting wire (21) is provided with a connecting plug (22). The connecting plug (22) is electrically connected to the body (1). The motor (2) is provided with a fixing plate (23) at the position of the inner top of the body (1). The edge of the fixing plate (23) is provided with multiple fixing holes (24). The output end of the motor (2) is provided with a drive shaft (25), and the middle part of the drive shaft (25) is provided with a plug shaft (26).

5. The can body surface anti-rust paint spraying device according to claim 4, characterized in that, The top of the turntable (3) is provided with a guide groove (31) in the horizontal direction. Both ends of the guide groove (31) are provided with second bearings (32). The side of the turntable (3) is provided with a through hole (33) aligned with one of the second bearings (32). The bottom of the turntable (3) is provided with a connecting shaft (34). The bottom of the connecting shaft (34) is provided with a drive slot (35). The plug shaft (26) is connected to the drive slot (35).

6. The can body surface anti-rust paint spraying device according to claim 5, characterized in that, Both ends of the bidirectional screw (4) are provided with adapters (41). The diameter of the adapters (41) is larger than the diameter of the bidirectional screw (4). The adapters (41) of the bidirectional screw (4) are aligned with the through hole (33) and pass through the through hole (33). The end of the adapters (41) that passes through the through hole (33) is provided with a rotating handle (42).

7. The can body surface anti-rust paint spraying device according to claim 1, characterized in that, The pressure block (5) has a rubber pad (51) on the side facing the turntable (3) and a connecting block (52) at the bottom end of the pressure block (5). The connecting block (52) has a threaded hole (53) in the middle and the threaded hole (53) is threadedly connected to the bidirectional screw (4).

8. The can body surface anti-rust paint spraying device according to claim 1, characterized in that, The drive cylinder (6) has a clamping plate (61) on both sides of its bottom. The clamping plate (61) is engaged with both sides of the support rod (14). The clamping plate (61) has multiple bolt holes (62). The drive cylinder (6) is fixed to the support rod (14) by bolts. The output end of the drive cylinder (6) has a telescopic rod (63). The bottom end of the telescopic rod (63) has a limiting pressure plate (64). The bottom surface of the limiting pressure plate (64) has a stud (65). The stud (65) passes through the protective cover (7). The end of the stud (65) that passes through the protective cover (7) has a pressure cap (66).

9. The can body surface anti-rust paint spraying device according to claim 1, characterized in that, The bottom end of the nozzle (71) inside the protective cover (7) extends out from the inside of the protective cover (7), and a connecting pipe (73) is provided at one end of the nozzle (71) extending out of the protective cover (7), and a connecting cap (74) is provided at the end of the connecting pipe (73); a plurality of nozzles (72) are evenly provided on the side of the nozzle (71) facing the turntable (3).

10. A device for spraying anti-rust paint on the surface of a tank according to any one of claims 1-9, characterized in that, It also includes an inspection cover (8), an inspection port (15) is provided on the back of the body (1), the inspection port (15) is provided with slots (18) at the top and bottom, the inspection cover (8) is provided with a retaining edge (81) at the top and bottom, the retaining edge (81) is engaged with the inside of the slot (18), and the inspection cover (8) is provided with multiple heat dissipation holes (83), and the outer side of the inspection cover (8) is provided with a pull groove (82) for disassembling and assembling the inspection cover (8).

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