Steel pipe internal and external surface treatment equipment

Abstract

The invention relates to the technical field of steel pipe cleaning, and discloses equipment for treating the inner and outer surfaces of steel pipes, including a hoist and a base, wherein a cleaning pool is fixedly connected to the top of the base, a lifting motor is fixedly connected to the outer wall of the hoist, a steel cable is wound inside the lifting motor, and the hoist also includes a double-layer cleaning component for fully cleaning the inner and outer surfaces of the steel pipe and a circulating contact component for maintaining a consistent cleaning effect. Through the limiting and guiding effects of guide washers, blocking washers, conical guide rings and guide blocks, clean water forms a spiral structure fluid, and then the two spiral fluids respectively clean the two sides and the middle of the inner surface of the steel pipe, ensuring that the cleaning reaction is evenly carried out inside the steel pipe, thereby improving the uniformity and quality of the cleaning effect, and since the spiral clean water can effectively contact the surface of the steel pipe, the consumption of clean water is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe cleaning, in particular to equipment for treating the inner and outer surfaces of steel pipes. Background Art

[0002] Steel pipe internal and external surface treatment equipment is mainly used to clean, rust, strengthen and anti-corrosion the inner and outer surfaces of steel pipes, aiming to improve the surface quality, hardness and service life of steel pipes. During the steel pipe cleaning process, cleaning can effectively remove the residual phosphating solution and pickling solution on the surface of the steel pipe, making the surface of the steel pipe clean, providing a good foundation for subsequent use.

[0003] However, there are still some problems with the existing steel pipe inner surface treatment equipment:

[0004] First, in the cleaning process of long steel pipes, the existing technology faces many challenges. First, due to the difficulty of the cleaning liquid flowing inside the super-long steel pipe, the concentration of the cleaning liquid in the middle and rear parts of the pipe is uneven, which directly affects the effect of the cleaning reaction and the anti-corrosion performance of the steel pipe. Secondly, the surface area of ​​the long steel pipe is large, and the fluidity of the cleaning liquid in the pipe is poor, which makes it impossible for the chemical substances in the cleaning liquid to be replenished to the surface of the steel pipe in time, thereby prolonging the cleaning time, increasing production costs and energy consumption, and more seriously, the chemical composition of the cleaning liquid will change during the long-term flow process, further reducing the cleaning effect and the anti-corrosion performance of the steel pipe;

[0005] In order to improve the fluidity of the cleaning liquid, the existing technology attempts to adopt a flow structure, but the cleaning reaction at the rear of the pipeline is insufficient due to the consumption of chemical substances, resulting in uneven cleaning effects. Although segmented processing can deal with the problem of extra-long steel pipes, this method adds additional operations such as cutting, cleaning, and drying, which not only increases production costs and process complexity, but also easily leads to discontinuity or defects in the cleaning film at the connection of the steel pipe, thereby reducing the anti-corrosion performance of the steel pipe and damaging the steel pipe substrate, affecting its strength and durability.‌

[0006] Secondly, in the steel pipe cleaning process, it is crucial to ensure that the cleaning liquid is fully in contact with and evenly mixed with the steel pipe surface. To achieve this goal, the prior art generally adopts a method of combining a circulating flow system with a hyperbolic agitator. The circulating flow system enables the cleaning liquid to flow continuously in the cleaning tank through pumping and pipeline layout, effectively increasing the contact between the cleaning liquid and the steel pipe surface, thereby promoting the cleaning reaction. The hyperbolic agitator can avoid damaging the steel pipe surface during the stirring process due to its smaller shear force. At the same time, its blade design makes it easier to stir the vertical gaps between the steel pipes, thereby improving the mixing effect of the cleaning liquid.

[0007] However, the hyperbolic agitator has obvious shortcomings when dealing with the transverse gaps on the outer surface of the steel pipe. Since the transverse gaps between the steel pipes are small and hidden, it is difficult for the stirring blades to penetrate into them for effective stirring. The stirring blades tend to generate stirring force in the vertical direction, resulting in poor flow and mixing effects of the cleaning liquid in the transverse gaps on the outer surface of the steel pipe. This not only affects the full progress of the cleaning reaction in the transverse gaps, but also leads to a decrease in the quality and uniformity of the cleaning effect in these areas.

[0008] Considering that cleaning is a key step in steel pipe anti-corrosion, its effect directly affects the anti-corrosion performance and service life of the steel pipe. Therefore, the cleaning effect of the transverse gap is particularly important. If the cleaning effect of these areas is defective or uneven, it will significantly increase the corrosion risk of the steel pipe, thereby affecting production safety and environmental protection.

[0009] Therefore, equipment for treating the inner and outer surfaces of steel pipes is proposed. Summary of the invention

[0010] The object of the present invention is to provide a steel pipe inner and outer surface treatment device to solve the problems raised in the above background technology.

[0011] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: equipment for treating the inner and outer surfaces of steel pipes, including a hoist and a base, the top of the base is fixedly connected to a cleaning pool, the outer wall of the hoist is fixedly connected to a lifting motor, a steel cable is wound inside the lifting motor, both sides of the base are fixedly connected to reaction tanks, and also include a double-layer cleaning component for fully cleaning the inner and outer surfaces of the steel pipe and a circulating contact component for maintaining a consistent cleaning effect.

[0012] Preferably, the double-layer cleaning component includes two double-headed rectangular frames, which are both sleeved on both sides of the bottom of the steel cable, and the outer surfaces of the double-headed rectangular frames are provided with through holes, and a sponge pad is fixedly connected to the inside of each through hole, and the cleaning pool runs through the outer surfaces of both sides and is fixedly connected with a plurality of nozzles in a rectangular equidistant arrangement, an inner cavity is provided at the inner center of the nozzle, and an outer cavity is provided on the periphery of the inner cavity, the outer cavities run through the outer surface of the nozzle and are provided with spray holes one in a circular equidistant arrangement, the inner cavities run through the outer surface of the nozzle and are provided with spray holes two in a circular equidistant arrangement, the outer surfaces of the nozzles are fixedly connected with guide washers, the outer surfaces of the guide washers are fixedly connected with blocking washers, and a steel pipe group is provided between the sponge pads.

[0013] Preferably, the double-layer cleaning assembly also includes a plurality of annular disks, which are fixedly connected to the outer surface of the inner cavity, and are concentric and coaxial with the nozzle. The annular disks penetrate the surface and are provided with cleaning holes that are interconnected with the inner cavity and are arranged equidistantly along the circumference. Circulation holes are provided at the center of the annular disks. The outer surfaces of the annular disks are arranged in a circular shape and are fixedly connected with a plurality of guide blocks that are arranged equidistantly. The outer surfaces of the annular disks penetrate the guide blocks and are fixedly connected with conical guide rings, and an offset guide block is fixedly connected between every two cleaning holes.

[0014] Preferably, the circulating contact assembly comprises two driving motors, the two driving motors are respectively fixedly connected to the bottom of the base, the output shafts of the two driving motors pass through the bottom of the base, the output shafts of the driving motors are fixedly connected to a rotating shaft, the rotating shaft is rotatably connected to the inner wall of the base, the outer surfaces of the rotating shafts are fixedly connected to a plurality of fixed mixing plates arranged equidistantly in a ring shape, the outer surfaces of the rotating shafts are arranged equidistantly in a ring shape with moving grooves, the inside of the moving grooves are fixedly connected to springs, the ends of the springs away from the inner wall of the moving grooves are fixedly connected to the moving mixing plates, the moving mixing plates are slidably connected to the inside of the moving grooves, the moving mixing plates and the fixed mixing plates are both provided with drainage holes through the surfaces, the bottoms of the moving mixing plates are provided with oblique grooves, two matching disks are symmetrically fixedly connected to the inner wall of the base, and the top of each matching disk is fixedly connected to a plurality of resistance rods arranged equidistantly in a ring shape.

[0015] Preferably, the inside of the nozzle is fixedly connected with a circulation mechanism, the bottom of the base is fixedly connected with a first water pump, the inside of the two reaction tanks are fixedly connected with a second water pump, the circulation mechanism includes water distribution pipe group 1, water distribution pipe group 2 and water distribution pipe group 3, the water distribution pipe group 1 is fixedly connected between the first water pump and the circulation hole, the water distribution pipe group 2 is fixedly connected between one of the second water pumps and the outer cavity, the water distribution pipe group 3 is fixedly connected between the other second water pump and the inner cavity, and a solenoid valve is installed inside the water distribution pipe group 1 on the side close to the circulation hole, and the solenoid valve is electrically controlled to start and close by an external controller.

[0016] Preferably, the sponge pad is made of silicone sponge, the inner wall edge of the guide washer is composed of a plurality of notches tangent to the center of the guide washer, and the two side edges of each notch are parallel to each other, and at the same time, the side of each notch away from the center of the guide washer is concentric with the injection hole, and the adjacent edges of every two adjacent guide blocks are parallel to each other, and the side of the offset guide block close to the center of the conical guide ring expands outward, and the outer edge of the conical guide ring expands outward.

[0017] Preferably, the drive motor is electrically started and shut down by an external controller, the movement slots are made of stainless steel, the shapes of the interference rods and the inclined slots are adapted to each other, and the height of the interference rods on each matching disk gradually increases.

[0018] Preferably, a steel pipe group is clamped between the two double-headed rectangular frames by sponge pads, a delivery hole is opened through the top of the base, the delivery hole is fixedly connected to an external water pump, the output end of the external water pump is fixedly connected to a clean water pipe, the external water pump is electrically started and shut down by an external controller, the first water pump is electrically started and shut down by an external controller, clean water is provided inside the reaction tank body connected to the outer cavity, and clean water is also provided inside the reaction tank body connected to the inner cavity, water quality monitors are installed on the outer surface and inner surface of the nozzle, and the water quality monitor is electrically connected to the external controller.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Through the limiting and guiding action of the guide washer, the blocking washer, the conical guide ring and the guide block, the clean water forms a spiral structure fluid, and then the two spiral fluids are respectively used to clean the two sides and the middle of the inner surface of the steel pipe, ensuring that the cleaning reaction is carried out evenly inside the steel pipe, thereby improving the uniformity and quality of the cleaning effect. Since the spiral clean water can effectively contact the surface of the steel pipe, this not only reduces the consumption of clean water, but also shortens the cleaning time, reduces production costs and energy consumption, and then, due to the improvement of the cleaning quality, the anti-corrosion performance of the steel pipe is significantly enhanced, and the service life of the steel pipe is extended;

[0021] In the prior art, it is difficult for clean water to flow in the pipeline, resulting in uneven cleaning. The double-layer cleaning component effectively solves the problem of clean water fluidity by forming a spiral structure of clean water, and realizes uniform cleaning reaction. Secondly, compared with the segmented processing of the prior art, the double-layer cleaning component avoids additional operations such as cutting, cleaning, and drying, reducing production costs and process complexity. Finally, the prior art has the problem of uneven cleaning effect and easy discontinuity or defects at the connection. The double-layer cleaning component improves the cleaning effect and reduces the risk of decreased anti-corrosion performance by changing the fluid structure.

[0022] Among them: when the clean water with a spiral structure flows inside the steel pipe, due to its unique rotation and spiral shape, it can greatly increase the contact area between the clean water and the inner surface of the steel pipe, thereby effectively making the clean water contact and react with the surface of the steel pipe. Secondly, during the flow of the clean water with a spiral structure, the water molecules inside it are also constantly moving and diffusing. This molecular movement helps the clean water to form a more uniform distribution on the inner surface of the steel pipe, avoiding the problem of uneven cleaning caused by uneven concentration due to the inclusion of other substances. At the same time, the movement characteristics of the clean water with a spiral structure can also drive the impurities and dirt on the inner surface of the steel pipe to move together, thereby playing a role in cleaning and pretreatment;

[0023] Among them: under the guiding action of the guide block and the conical guide ring, the design of the outward expansion of the side of the offset guide block close to the center of the conical guide ring guides the flow of clean water. This outward expansion force makes the clean water gradually expand from a small angle to a large angle, effectively avoiding the problem of premature mixing of clean water with clean water carrying other substances during the forward process due to concentration difference. Therefore, the offset guide block ensures that the clean water can accurately act on the middle of the inner surface of the steel pipe, improves the quality and uniformity of the cleaning effect, and reduces the waste of clean water;

[0024] Among them: two kinds of clean water act on the inner surface of the steel pipe together, forming a unique cleaning mechanism, one kind of clean water acts on both sides of the inner surface of the steel pipe for a long time, ensuring that the cleaning reaction on both sides is fully carried out; and the other kind of clean water acts on the middle of the inner surface of the steel pipe for a short time, quickly forming a high-quality cleaning layer. This combined cleaning method not only improves the efficiency and uniformity of the cleaning reaction, but also makes the cleaning effect present a uniform and continuous distribution on the inner surface of the steel pipe. Therefore, the high-quality cleaning layer can significantly improve the anti-corrosion performance of the steel pipe and extend its service life;

[0025] Among them: the sponge pad serves as a buffer layer between the steel pipe and the double-headed rectangular frame, which can not only prevent the steel pipe from directly contacting the double-headed rectangular frame, resulting in limited cleaning reaction of the contact surface, but also effectively prevent the steel pipe from tilting or sliding during the cleaning process by increasing friction, thus ensuring the stability of the cleaning process and the quality of the cleaning effect.

[0026] 2. By introducing the composite rotation mechanism of the rotating shaft, the fixed mixing plate, the movable mixing plate and the resistance rod, the stirring process of the clean water inside the steel pipe has been significantly improved. First, the rotating shaft drives the fixed mixing plate to rotate synchronously, ensuring that the clean water flows evenly in the vertical gap of the steel pipe, promoting the full cleaning reaction in the vertical gap. At the same time, the movable mixing plate is resisted by the resistance rod during the rotation of the rotating shaft and moves up and down, generating a deflected fluid vortex. The characteristics of the deflected vortex make the clean water tend to move to the lateral gap on the outer surface of the steel pipe, thereby effectively solving the short board problem of the traditional agitator when dealing with the lateral gap. Therefore, the circulating contact component not only improves the fluidity and mixing effect of the clean water in all the gaps on the outer surface of the steel pipe, but also ensures that the cleaning reaction is carried out comprehensively and evenly on the outer surface of the steel pipe, which helps to improve the uniformity and quality of the cleaning effect, thereby enhancing the anti-corrosion performance of the steel pipe and extending its service life. At the same time, due to the improvement of the stirring effect, the utilization rate of the clean water is also improved, thereby reducing the consumption of clean water, reducing production costs and energy consumption;

[0027] Compared with the existing method of combining a circulating flow system with a traditional agitator, the circulating contact component can penetrate into the transverse gap of the steel pipe through the up and down movement of the moving mixing plate and the generated deflected fluid vortex, so as to achieve effective flow and mixing of clean water in the transverse gap, thereby solving the problems of uneven stirring and insufficient cleaning reaction in the prior art. Secondly, the component not only improves the quality and uniformity of the cleaning effect in the transverse gap, but also ensures that the cleaning reaction is carried out uniformly on the entire inner surface of the steel pipe, which helps to improve the anti-corrosion performance of the steel pipe, reduce the risk of corrosion, and further ensure production safety and environmental protection.

[0028] Among them: as the height of the interference rod gradually increases, it can generate fluid vortices with different initial velocities and deflection angles in the interaction with the moving mixing plate, and these fluid vortices can more accurately match the lateral gaps between the outer surfaces of the steel pipes, thereby ensuring the effective flow and mixing of clean water in the lateral gaps;

[0029] Among them: the design of the leakage holes also plays an important role. It reduces the shear force generated during the stirring process and provides more flow channels for the clean water. The clean water can flow in a dispersed manner when passing through these leakage holes, thereby reducing the potential damage of the shear force to the outer surface of the steel pipe. At the same time, the leakage holes also promote the uniform distribution of the clean water. The clean water will be dispersed into smaller fluid units when passing through the leakage holes. These units can be more evenly distributed on the outer surface of the steel pipe, further improving the uniformity and quality of the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a frontal perspective schematic diagram of the main structure of the present invention;

[0031] Figure 2 For the present invention Figure 1 A magnified three-dimensional schematic diagram of the structure at center A;

[0032] Figure 3 It is a cross-sectional stereoscopic schematic diagram of the main structure of the present invention;

[0033] Figure 4 For the present invention Figure 3 The enlarged three-dimensional schematic diagram of the structure at B in the middle;

[0034] Figure 5 For the present invention Figure 3 The enlarged three-dimensional schematic diagram of the structure at C in the middle;

[0035] Figure 6 For the present invention Figure 5 The enlarged three-dimensional schematic diagram of the structure at D in the middle;

[0036] Figure 7 It is an exploded stereoscopic schematic diagram of the double-layer cleaning assembly of the present invention;

[0037] Figure 8 For the present invention Figure 7 The enlarged three-dimensional schematic diagram of the structure at E in the middle;

[0038] Fig. 9 It is a partial three-dimensional schematic diagram of the connection relationship of the second water pump of the present invention;

[0039] Fig.10 It is a partial three-dimensional schematic diagram of the connection relationship of the circulation mechanism of the present invention.

[0040] In the figure:

[0041] 11. Hoisting machine; 12. Base; 13. Cleaning tank; 14. Lifting motor; 15. Steel cable;

[0042] 2. Double-layer cleaning assembly; 21. Double-headed rectangular frame; 22. Sponge pad; 23. Nozzle; 24. Outer cavity; 25. Inner cavity; 26. Guide washer; 27. Blocking washer; 28. Annular disk; 29. ​​Cleaning hole; 210. Guide block; 211. Conical guide ring; 212. Offset guide block;

[0043] 3. Steel pipe group;

[0044] 4. Circulation contact assembly; 41. Driving motor; 42. Rotating shaft; 43. Fixed mixing plate; 44. Leakage hole; 45. Moving groove; 46. Spring; 47. Moving mixing plate; 48. Inclined groove; 49. Abutment rod;

[0045] 5. Circulation mechanism; 51. First water pump; 52. Second water pump. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figures 1 to 10 , the present invention provides an embodiment:

[0048] Embodiment: Equipment for treating the inner and outer surfaces of steel pipes includes a hoist 11 and a base 12. A cleaning pool 13 is fixedly connected to the top of the base 12. A lifting motor 14 is fixedly connected to the outer wall of the hoist 11. A steel cable 15 is wound inside the lifting motor 14. Both sides of the base 12 are fixedly connected to reaction tanks. The base 12 also includes a double-layer cleaning component 2 for fully cleaning the inner and outer surfaces of the steel pipe and a circulating contact component 4 for maintaining a consistent cleaning effect.

[0049] The double-layer cleaning component 2 includes two double-headed rectangular frames 21, which are both sleeved on both sides of the bottom of the steel cable 15. The outer surfaces of the double-headed rectangular frames 21 are provided with through holes, and a sponge pad 22 is fixedly connected to each through hole. The cleaning pool 13 runs through the outer surfaces of both sides and is equidistantly arranged in a rectangular shape and fixedly connected to a plurality of nozzles 23. An inner cavity 25 is provided at the inner center of the nozzle 23, and an outer cavity 24 is provided on the periphery of the inner cavity 25. The outer cavity 24 runs through the outer surface of the nozzle 23 and is equidistantly arranged in a ring shape and has injection holes 1. The inner cavity 25 runs through the outer surface of the nozzle 23 and is equidistantly arranged in a ring shape and has injection holes 2. The outer surface of the nozzle 23 is fixedly connected to a guide washer 26, and the outer surface of the guide washer 26 is fixedly connected to a blocking washer 27. A steel pipe group 3 is provided between the sponge pads 22, and the steel pipe group 3 includes a plurality of steel pipes.

[0050] The double-layer cleaning component 2 also includes a plurality of annular disks 28, which are fixedly connected to the outer surface of the inner cavity 25, and the annular disks 28 are concentric and coaxial with the nozzle 23. The annular disks 28 penetrate their surfaces, and cleaning holes 29 that are interconnected with the inner cavity 25 are arranged equidistantly along their circumferences. Circulation holes are opened at the center of the annular disks 28. The outer surfaces of the annular disks 28 are arranged equidistantly in a ring shape and fixedly connected with a plurality of guide blocks 210. The outer surfaces of the annular disks 28 penetrate the guide blocks 210 and are fixedly connected with conical guide rings 211, and an offset guide block 212 is fixedly connected between every two cleaning holes 29.

[0051] The circulating contact assembly 4 includes two driving motors 41, which are fixedly connected to the bottom of the base 12 respectively. The output shafts of the two driving motors 41 pass through the bottom of the base 12. The output shafts of the driving motors 41 are fixedly connected to the rotating shafts 42. The rotating shafts 42 are rotatably connected to the inner wall of the base 12. The outer surfaces of the rotating shafts 42 are fixedly connected to a plurality of fixed mixing plates 43 arranged in an annular manner and equidistantly. The outer surfaces of the rotating shafts 42 are arranged in an annular manner and equidistantly with movement grooves 45. The inside of the movement grooves 45 are fixedly connected with springs 46. The ends of the springs 46 away from the inner wall of the movement grooves 45 are fixedly connected with mobile mixing plates 47. The mobile mixing plates 47 are slidably connected to the inside of the movement grooves 45. The mobile mixing plates 47 and the fixed mixing plates 43 are both provided with drainage holes 44 through the surface. The bottom of the mobile mixing plates 47 is provided with inclined grooves 48. Two matching disks are symmetrically fixedly connected to the inner wall of the base 12. The top of each matching disk is fixedly connected to a plurality of abutment rods 49 arranged in an annular manner and equidistantly.

[0052] The inside of the nozzle 23 is fixedly connected to a circulation mechanism 5, the bottom of the base 12 is fixedly connected to a first water pump 51, and the inside of the two reaction tanks is fixedly connected to a second water pump 52. The circulation mechanism 5 includes a water distribution pipe group 1, a water distribution pipe group 2 and a water distribution pipe group 3. The water distribution pipe group 1 is fixedly connected between the first water pump 51 and the circulation hole, the water distribution pipe group 2 is fixedly connected between one of the second water pumps 52 and the outer cavity 24, and the water distribution pipe group 3 is fixedly connected between the other second water pump 52 and the inner cavity 25. A solenoid valve is installed inside the water distribution pipe group 1 on one side close to the circulation hole, and the solenoid valve is electrically controlled to start and close by an external controller.

[0053] The sponge pad 22 is made of silicone sponge. The inner wall edge of the guide washer 26 is composed of a plurality of grooves tangent to the center of the guide washer 26, and the two side edges of each groove are parallel to each other. At the same time, the side of each groove away from the center of the guide washer 26 is concentric with the injection hole. The adjacent sides of every two adjacent guide blocks 210 are parallel to each other. The side of the offset guide block 212 close to the center of the conical guide ring 211 expands outward, and the outer edge of the conical guide ring 211 expands outward.

[0054] The driving motor 41 is electrically controlled to start and stop by an external controller. The moving grooves 45 are made of stainless steel. The shapes of the abutment rods 49 and the inclined grooves 48 are adapted to each other. The height of the abutment rods 49 on each matching disk gradually increases.

[0055] A steel pipe group 3 is clamped between two double-headed rectangular frames 21 through a sponge pad 22. A delivery hole is opened through the top of the base 12, and the delivery hole is fixedly connected to an external water pump. A clean water pipe is fixedly connected to the output end of the external water pump. The external water pump is electrically started and shut down by an external controller. The first water pump 51 is electrically started and shut down by an external controller. Clean water is provided inside the reaction tank body connected to the outer cavity 24, and clean water is provided inside the reaction tank body connected to the inner cavity 25. Water quality monitors are installed on the outer and inner surfaces of the nozzle 23, and the water quality monitor is electrically connected to the external controller.

[0056] The working principle of the present invention in combination with the above is as follows:

[0057] The following is an initial state: the spring 46 is not compressed, the abutment rod 49 does not abut against the inclined groove 48, and the solenoid valve is in a closed state.

[0058] The following are the specific steps of the work:

[0059] Among them, the cleaning treatment of the outer surface of the steel pipe group 3:

[0060] like Figures 1 to 5 As shown, the operator manually controls the external controller, and makes the external controller electrically control the lifting motor 14 to start. At this time, the lifting motor 14 is connected by the steel cable 15 to slowly lower the steel pipe into the cleaning tank 13. Since the steel pipes are neatly arranged through the double-headed rectangular frame 21, the steel pipes are concentric with the nozzle 23 at this time. At this time, the operator electrically controls the external water pump through the external controller to start working, and releases clean water into the cleaning tank 13 through the clean water pipe and the release hole. After the clean water contacts the surface of the steel pipe, it is sprayed with high pressure by the nozzle 23 to form a uniform water flow covering the outer surface of the steel pipe, thereby completing the cleaning process on the outer surface of the steel pipe. During the cleaning process, the softness and water absorption of the sponge pad 22 further ensure the uniform distribution of clean water on the surface of the steel pipe, avoiding waste and pollution of cleaning water.

[0061] Among them, the cleaning treatment of the inner surface of the steel pipe group 3:

[0062] like Figures 3 to 8 As shown, in the above process, when the steel pipe falls stably into the cleaning tank 13, the operator electrically controls the two second water pumps 52 to start through the external controller. At this time, clean water is pumped into the outer cavity 24 inside the nozzle 23 through the water distribution pipe group two, and another part of the clean water is pumped into the inner cavity 25 through the water distribution pipe group three.

[0063] Inside the outer cavity 24, clean water is sprayed out through the injection hole 1 at a certain speed and angle, forming an initial fluid dynamics. Then, this fluid is blocked when it contacts the blocking gasket 27, thereby changing the flow direction and flowing toward the side close to the center of the guide gasket 26. The groove-shaped structure designed inside the guide gasket 26 plays a guiding role, allowing the clean water to move in the opposite direction of its tangent, and then forming a spiral structure flow on both sides of the inner wall of the steel pipe. This spiral structure flow helps the clean water to cover both sides of the inner wall of the steel pipe more evenly, and increases the contact time and contact area between the clean water and the inner wall of the steel pipe, thereby improving the cleaning effect.

[0064] At the same time, inside the inner cavity 25, clean water is ejected through the second injection hole, and an initial fluid dynamic force is also formed. This fluid is blocked when it contacts the conical guide ring 211, and begins to form a spiral structure flow under the guidance of the guide block 210. At this time, the clean water with a spiral structure is guided by the offset guide block 212 during the movement. Since the side of the offset guide block 212 close to the center of the conical guide ring 211 expands outward, and the outer edge of the conical guide ring 211 also expands outward, the clean water with a spiral structure is subjected to an oblique force and tends to deflect outward. This deflection causes the clean water with a spiral structure to gradually expand its initial angle during the movement and eventually form a conical spiral structure. The clean water with this conical spiral structure can more effectively cover the middle area of ​​the inner wall of the steel pipe and complement the clean water on both sides.

[0065] As the clean water flows and diffuses on the inner wall of the steel pipe, it forms a uniform covering layer on both sides and the middle of the inner wall of the steel pipe, ensuring that all areas of the inner wall of the steel pipe can be fully cleaned. This internal and external cleaning method can effectively remove impurities and residues on the inner and outer surfaces of the steel pipe, ensuring that the steel pipe reaches the best condition in the subsequent processing process.

[0066] Among them, the circulation of clean water and the consistent cleaning effect:

[0067] like Figure 3 , Figure 4 as well as Figure 8 , Fig. 9As shown, when the water quality monitor detects that the clean water concentration inside the steel pipe has reached equilibrium, the water quality monitor sends an electrical signal to the external controller, and then the external controller electrically closes the second water pump 52, and starts the solenoid valve, the first water pump 51 and the external motor. Due to structural limitations inside the steel pipe, it is difficult for clean water to flow naturally and be evenly distributed, so it is necessary to enhance the mixing and covering effect of the clean water through circulating flow. After the first water pump 51 is started, the clean water inside the steel pipe is circulated through the water distribution pipe group. During this process, the clean water forms a stable flow state in the pipe, continuously flushing and cleaning the inner wall of the steel pipe, removing residues and promoting the uniform distribution of the clean water. At the same time, this circulating flow also helps the impurities in the clean water to fully react with the inner wall of the steel pipe, thereby improving the cleaning effect. When processing the outer surface of the steel pipe, since the clean water can flow naturally and cover the surface, there is no need for circulating flow. At this time, it is only necessary to stir the clean water to ensure that the impurities in the clean water can be evenly distributed and fully react.

[0068] At the same time, the start of the external motor drives the rotating shaft 42 and the fixed mixing plate 43 and the mobile mixing plate 47 on its surface to rotate synchronously. The rotation of the fixed mixing plate 43 produces a mixing effect that affects the vertical gap between the steel pipes. In addition, the inclined groove 48 opened on the surface of the mobile mixing plate 47 will conflict with the interference rod 49 during the rotation process. Based on the inclined plane principle, the mobile mixing plate 47 will move toward the top of the hoist 11. During this process, the mobile mixing plate 47 slides in the moving groove 45 and compresses the spring 46. When the mobile mixing plate 47 moves, the clean water around it is squeezed and pushed, forming a flow with a deflection angle The fluid vortex has a deflection angle that is affected by the initial angle and the inclined plane principle, so it tends to bend into the lateral gaps between the outer surfaces of the steel pipes during movement. The deflected fluid can penetrate into the lateral gaps on the outer surfaces of the steel pipes, ensuring that clean water can fully cover and treat these hard-to-reach areas. Each resistance rod 49 has a different height, which leads to differences in the deflection angles of the fluid vortex. By moving the mixing plate 47 and the resistance rods 49 of different heights, the deflection angle and coverage of the fluid vortex can be controlled, thereby achieving precise treatment of different lateral gaps on the outer surfaces of the steel pipes.

[0069] The process of lifting the steel pipe group 3 from the cleaning tank 13 is as follows:

[0070] After the steel pipe is fully cleaned in the cleaning tank 13, the operator starts the lifting motor 14 again. The lifting motor 14 slowly lifts the steel pipe to the top of the cleaning tank 13 through the steel cable 15 and the double-headed rectangular frame 21. At this time, the steel pipe can be placed in the subsequent processing process through the hoist 11. During the lifting process of the steel pipe, the sponge pad 22 loses the buoyancy of the clean water in the cleaning tank 13, and then under the action of the steel pipe's own gravity, the clean water inside the sponge pad 22 will gradually drip back into the cleaning tank 13 with the clean water on the surface of the steel pipe, reducing the waste of clean water. The operator can extract the used clean water in the cleaning tank 13 through an external water pump and ensure the stability of the clean water quality during the second cleaning process.

[0071] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel pipe inner and outer surface treatment device, comprising a hoist (11) and a base (12), wherein the top of the base (12) is fixedly connected to a cleaning tank (13), the outer wall of the hoist (11) is fixedly connected to a lifting motor (14), a steel cable (15) is wound inside the lifting motor (14), and both sides of the base (12) are fixedly connected to reaction tanks, characterized in that: It also includes a double-layer cleaning component (2) for achieving a sufficient cleaning effect on both the inner and outer surfaces of the steel pipe, and a circulating contact component (4) for maintaining a consistent cleaning effect; The double-layer cleaning component (2) comprises two double-headed rectangular frames (21), the two double-headed rectangular frames (21) are sleeved on both sides of the bottom of the steel cable (15), the outer surfaces of the double-headed rectangular frames (21) are provided with through holes, each of the through holes is fixedly connected to a sponge pad (22), the cleaning pool (13) passes through the outer surfaces of both sides and is equidistantly arranged in a rectangular shape and fixedly connected to a plurality of nozzles (23), the inner center of the nozzle (23) is provided with an inner cavity (25), the inner cavity (25) is provided with a plurality of nozzles (23) arranged in a rectangular shape and fixedly connected to the outer surfaces of the cleaning pool (13 ... An outer cavity (24) is arranged at the periphery of the cavity (25); the outer cavities (24) penetrate the outer surface of the nozzle (23) and are provided with injection holes one arranged in an annular pattern and at equal intervals; the inner cavities (25) penetrate the outer surface of the nozzle (23) and are provided with injection holes two arranged in an annular pattern and at equal intervals; the outer surface of the nozzle (23) is fixedly connected with a guide washer (26); the outer surface of the guide washer (26) is fixedly connected with a blocking washer (27); and a steel pipe group (3) is arranged between the sponge pads (22); The double-layer cleaning assembly (2) further comprises a plurality of annular disks (28), the plurality of annular disks (28) being fixedly connected to the outer surface of the inner cavity (25), the annular disks (28) being concentric and coaxial with the nozzle (23), the annular disks (28) penetrating the surface thereof, and being provided with cleaning holes (29) being arranged equidistantly along the circumference thereof and being interconnected with the inner cavity (25), the annular disks (28) being provided with circulation holes at the center thereof, the outer surface of the annular disks (28) being arranged equidistantly in an annular shape and fixedly connected to a plurality of guide blocks (210), the outer surface of the annular disks (28) penetrating the guide blocks (210) being fixedly connected to a conical guide ring (211), and an offset guide block (212) being fixedly connected between every two of the cleaning holes (29); The inside of the nozzle (23) is fixedly connected to a circulation mechanism (5), the bottom of the base (12) is fixedly connected to a first water pump (51), and the inside of the two reaction tanks is fixedly connected to a second water pump (52), the circulation mechanism (5) comprises a water distribution pipe group 1, a water distribution pipe group 2 and a water distribution pipe group 3, the water distribution pipe group 1 is fixedly connected between the first water pump (51) and the circulation hole, the water distribution pipe group 2 is fixedly connected between one of the second water pumps (52) and the outer cavity (24), and the water distribution pipe group 3 is fixedly connected between the other second water pump (52) and the inner cavity (25), and a solenoid valve is installed inside the water distribution pipe group 1 on a side close to the circulation hole, and the solenoid valve is electrically controlled to start and close by an external controller; The sponge pad (22) is made of silicone sponge. The inner wall edge of the guide washer (26) is composed of a plurality of notches tangent to the center of the guide washer (26), and the two side edges of each notch are parallel to each other. At the same time, the side of each notch away from the center of the guide washer (26) is concentric with the injection hole. The adjacent sides of every two adjacent guide blocks (210) are parallel to each other. The side of the offset guide block (212) close to the center of the conical guide ring (211) expands outwards, and the outer edge of the conical guide ring (211) expands outwards.

2. The steel pipe inner and outer surface treatment equipment according to claim 1, characterized in that: The cyclic contact assembly (4) comprises two drive motors (41), the two drive motors (41) are respectively fixedly connected to the bottom of the base (12), the output shafts of the two drive motors (41) pass through the bottom of the base (12), the output shafts of the drive motors (41) are fixedly connected to a rotating shaft (42), the rotating shaft (42) is rotatably connected to the inner wall of the base (12), the outer surface of the rotating shaft (42) is arranged in an annular manner and fixedly connected to a plurality of fixed mixing plates (43), the outer surface of the rotating shaft (42) is arranged in an annular manner and is provided with movement grooves (45), the movement grooves (45) are arranged in an annular manner and are arranged in an annular manner and are provided with movement grooves (45) A spring (46) is fixedly connected inside the movable groove (45), and one end of the spring (46) away from the inner wall of the movable groove (45) is fixedly connected to a movable mixing plate (47). The movable mixing plate (47) is slidably connected to the inside of the movable groove (45). The movable mixing plate (47) and the fixed mixing plate (43) are both provided with leakage holes (44) through the surface, and the bottom of the movable mixing plate (47) is provided with an inclined groove (48). Two matching disks are symmetrically fixedly connected to the inner wall of the base (12), and a plurality of abutment rods (49) are fixedly connected to the top of each matching disk in an annular and equidistant arrangement.

3. The steel pipe inner and outer surface treatment equipment according to claim 2, characterized in that: The drive motor (41) is electrically controlled to start and stop by an external controller. The movement slots (45) are all made of stainless steel. The shapes of the abutment rods (49) and the inclined slots (48) are mutually adapted. The height of the abutment rods (49) on each matching disk gradually increases.

4. The steel pipe inner and outer surface treatment equipment according to claim 1, characterized in that: A steel pipe group (3) is clamped between the two double-headed rectangular frames (21) via a sponge pad (22); a delivery hole is provided through the top of the base (12); the delivery hole is fixedly connected to an external water pump; an output end of the external water pump is fixedly connected to a clean water pipe; the external water pump is electrically started and shut down by an external controller; the first water pump (51) is electrically started and shut down by an external controller; clean water is provided inside the reaction tank body connected to the outer cavity (24); clean water is also provided inside the reaction tank body connected to the inner cavity (25); water quality monitors are installed on the outer and inner surfaces of the nozzle (23); the water quality monitors are electrically connected to the external controller.

Images