Galvanizing device and method for hot-dip galvanized steel pipe production

Abstract

The invention belongs to the technical field of steel pipe galvanization, and particularly relates to a galvanization device and method for hot-dip galvanized steel pipe production. Comprising a plating assisting tank, a derusting tank and a galvanizing tank are arranged on the two sides of the plating assisting tank correspondingly, a hanging rail is arranged above the plating assisting tank, a moving seat is slidably connected to the hanging rail, two steel ropes are wound on the moving seat, two first motors are symmetrically installed on the two sides of the top of the plating assisting tank, and first bevel gears are fixedly connected to the output ends of the first motors; the two sides of the first bevel gear are symmetrically connected with two second bevel gears in a meshed mode. The first driving motor can drive the defoaming plate to slide towards the two sides, white foam floating on the surface of the plating assisting liquid is pushed towards the two sides of the plating assisting tank through the defoaming plate, and the problems that the white foam is attached to a steel pipe when the steel pipe is lifted, then subsequent full contact between zinc liquid and the surface of the steel pipe is affected, and the galvanization quality is reduced are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of steel pipe galvanizing, and specifically relates to a galvanizing device and method for producing hot-dip galvanized steel pipes. Background Art

[0002] Galvanizing of steel pipes is a surface treatment technology, which specifically refers to the process of immersing the steel pipe in molten zinc liquid to attach a layer of zinc to the surface of the steel pipe. This process is to form a solid zinc layer on the surface of the steel pipe through chemical reaction, thereby enhancing the corrosion resistance of the steel pipe. Galvanized steel pipes have many advantages, such as low processing cost, durability, good reliability, strong coating toughness, comprehensive protection, and time and labor saving. Among them, the zinc coating can provide comprehensive protection for the steel pipe, even in recessed areas, sharp corners and hidden places, effectively preventing the steel pipe from being affected by oxidation corrosion. The galvanizing process of steel pipes usually involves immersing the steel pipe in a dilute hydrochloric acid solution for rust removal, then immersing the smooth steel pipe in the plating solution of the plating tank for plating treatment, and finally immersing the steel pipe after plating in molten zinc liquid to complete the galvanizing.

[0003] In the prior art, due to the use environment and cost of the plating solution, the plating solution in the plating tank is generally not completely degassed during the immersion of the steel pipe. This results in white foam consisting of bubbles and impurities floating on the surface of the plating solution. When the steel pipe rises up after immersion in the plating tank, the white foam will adhere to the surface. The white foam attached to the surface of the steel pipe will hinder the full contact between the zinc liquid and the surface of the steel pipe, resulting in an uneven galvanized layer, which affects the galvanizing effect of the steel pipe.

[0004] To this end, the present invention provides a galvanizing device and method for producing hot-dip galvanized steel pipes. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve the problem in the prior art that, due to the use environment and cost of the plating solution, the plating solution in the plating solution tank is generally not completely degassed during the immersion of the steel pipe, which results in white foam composed of bubbles and impurities floating on the surface of the plating solution, so that the steel pipe will be attached to the surface by the white foam during the process of rising up after immersion in the plating solution tank, and the white foam attached to the surface of the steel pipe will hinder the full contact between the zinc liquid and the surface of the steel pipe, resulting in uneven galvanized layer and affecting the galvanizing effect of the steel pipe. The present invention proposes a galvanizing device and method for hot-dip galvanized steel pipe production.

[0006] The technical solution applicable to the present invention for solving its technical problem is: a galvanizing device for hot-dip galvanized steel pipe production described in the present invention comprises a plating-assisting tank, a rust removal tank and a galvanizing tank are respectively arranged on both sides of the plating-assisting tank, a hanging rail is arranged above the plating-assisting tank, a moving seat is slidably connected to the hanging rail, two steel cables are wound on the moving seat, two motors 1 are symmetrically installed on both sides of the top of the plating-assisting tank, a bevel gear 1 is fixedly connected to the output end of the motor 1, two bevel gears 2 are symmetrically meshed and connected on both sides of the bevel gear 1, a screw is fixedly connected to the bevel gear 2, one end of the screw It is rotatably connected to a bracket, the bottom end of the bracket is fixedly connected to the side wall of the plating-assisting tank, a screw sleeve is threadedly connected to the screw rod, and a support arm is fixedly connected to the top of the screw sleeve. Two groups of defoaming plates are symmetrically arranged on the top of the inner cavity of the plating-assisting tank, each group of the defoaming plates has two defoaming plates, and the defoaming plates are L-shaped. A gap is provided between the two groups of the defoaming plates, and they are adapted to the steel cables. A fixed sleeve is provided on one side of the defoaming plate, and the top of the fixed sleeve is fixedly connected to the support arm. Two groups of guide plates are symmetrically fixedly connected to both sides of the top of the plating-assisting tank, each group of the guide plates has two guide plates, and the fixed sleeves are slidably matched with the guide plates.

[0007] Preferably, filter holes are evenly arranged at the bottom of the defoaming plate, and a horizontal groove 1, a vertical groove 1, a horizontal groove 2 and an oblique groove 1 are provided on the guide plate. A side of the oblique groove 1 close to the horizontal groove 1 is fixedly connected to a limiting block 1, and a side of the limiting block 1 away from the horizontal groove 1 is an inclined surface. A slider 1 is slidably connected in the inner cavity of the fixed sleeve, and a spring 1 is fixedly connected between the slider 1 and the top of the inner cavity of the fixed sleeve. A guide assembly is provided on the slider 1, and the guide assembly is slidably matched with the horizontal groove 1, the vertical groove 1, the horizontal groove 2 and the oblique groove 2. A slider 3 is fixedly connected to the side of the slider 1 close to the defoaming plate, and an end of the slider 3 away from the slider 1 extends to the outside of the fixed sleeve and is fixed to the defoaming plate, and the slider 3 is slidably connected to the outer wall of the fixed sleeve.

[0008] Preferably, the guide assembly includes a slider 2 and a guide block, a slider 2 is fixedly connected to a side of the slider 1 close to the guide plate, an end of the slider 2 away from the slider 1 extends to the outside of the fixed sleeve, and the slider 2 is slidably connected to the fixed sleeve, a T-block is slidably connected in the inner cavity of the slider 2, a spring 2 is fixedly connected between the T-block and the inner wall of the slider 2, an end of the T-block away from the spring 2 extends to the outside of the slider 2 and is fixedly connected to the guide block, and the guide block is slidably connected to the horizontal groove 1, the vertical groove 1, the horizontal groove 2 and the oblique groove 2.

[0009] Preferably, both ends of the plating-assisting tank are provided with spray tanks, a spray pipe is fixedly connected to the top of the spray tank on a side away from the plating-assisting tank, one end of the spray pipe is fixedly connected to a water inlet pipe, spray heads are evenly fixedly connected to the outer wall of the spray pipe on a side close to the plating-assisting tank, the spray heads are inclined downward, a drain pipe is fixedly connected to the bottom of one side of the spray tank, and one end of the horizontal groove away from the vertical groove extends to the top of the spray tank.

[0010] Preferably, the guide plate is located above the spray trough and is provided with a vertical groove 2, a stepped groove and an inclined groove 2. The end of the horizontal groove 1 away from the vertical groove 1 is connected to the vertical groove 2, the vertical length of the vertical groove 2 is smaller than the vertical length of the vertical groove 1, the bottom end of the stepped groove and the horizontal groove 2 are in the same horizontal plane, the side of the inclined groove 2 close to the horizontal groove 1 is fixedly connected to a limiting block 2, and the side of the limiting block 2 away from the horizontal groove 1 is an inclined surface.

[0011] Preferably, a mounting frame is fixedly connected to one side of the defoaming plate close to the spray tank, an air pump is fixedly installed on the side wall of the mounting frame, an air intake pipe is fixedly connected to the air pump, an air intake pipe is fixedly connected to the end of the air intake pipe away from the air pump, the air intake pipe is fixedly connected to the defoaming plate, and the air intake pipe is inclined, a nozzle is evenly fixedly connected to one side of the nozzle pipe close to the spray tank, and the nozzle is inclined downward.

[0012] Preferably, an arc-shaped frame is fixedly connected to the side of the mounting frame away from the spray trough, a jet plate is slidably connected to the arc-shaped frame, an air intake pipe is fixedly connected to the side of the jet plate close to the jet pipe, an end of the air intake pipe away from the jet plate is fixedly connected to the air pump, and two nozzles are evenly fixedly connected to the side of the jet plate away from the jet pipe, and the two nozzles are inclined inward.

[0013] Preferably, an arc frame 2 is fixedly connected to the inner side of the arc frame 1, the arc frame 2 is coaxial with the arc frame, a jet plate 2 is slidably connected to the arc frame 2, an air intake pipe 3 is fixedly connected to the side of the jet plate 2 close to the jet pipe, an end of the air intake pipe 3 away from the jet plate 2 is fixedly connected to the air pump, and a nozzle 3 is evenly fixedly connected to the side of the jet plate 2 away from the jet pipe, and the nozzle 3 is inclined outward.

[0014] Preferably, a second motor is fixedly mounted on the top of the mounting frame, a rotating shaft is fixedly connected to the output end of the second motor, a spur gear is fixedly connected to the rotating shaft, an arc-shaped rack plate one and an arc-shaped rack plate two are respectively meshed and connected on both sides of the spur gear, the arc-shaped rack plate one is fixedly connected to the first jet plate, and the arc-shaped rack plate two is fixedly connected to the second jet plate.

[0015] A galvanizing method for producing hot-dip galvanized steel pipes, which is applicable to the galvanizing device for producing hot-dip galvanized steel pipes described above, and comprises the following steps:

[0016] S1: The staff uses the sliding cooperation between the moving seat and the hanging rail to make the steel cable tilt the steel pipe and then immerse the steel pipe in the rust removal tank, the plating assistance tank and the galvanizing tank in turn to complete the rust removal, plating assistance and galvanizing operations;

[0017] S2: When the steel pipe is ready to be lifted after being immersed in the auxiliary plating tank, the driving motor 1 can drive the defoaming plate to slide to both sides, and the defoaming plate pushes the white foam floating on the surface of the auxiliary plating solution to both sides of the auxiliary plating tank, thereby preventing the steel pipe from being attached to the white foam when it is lifted, thereby affecting the subsequent galvanizing effect;

[0018] S3: The air pump cooperates with the air inlet pipe 1, so that the nozzle 1 on the jet pipe can blow away the white foam on the steel cable. The air pump cooperates with the air inlet pipes 2 and 3, so that the nozzles 2 on the jet plate 1 and the nozzles 3 on the jet plate 2 can blow and dry the outer wall and the inner wall of the suspended steel pipe.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The galvanizing device and method for hot-dip galvanized steel pipe production described in the present invention can drive the defoaming plate to slide to both sides through a driving motor, and push the white foam floating on the surface of the plating solution to both sides of the plating tank through the defoaming plate, thereby avoiding the steel pipe being attached to the white foam when it is raised, thereby affecting the subsequent sufficient contact between the zinc liquid and the surface of the steel pipe, causing the problem of reduced galvanizing quality.

[0021] 2. The galvanizing device and method for hot-dip galvanized steel pipe production described in the present invention, through the cooperation of an air pump with an air inlet pipe 1, the nozzle 1 on the jet pipe can blow away the white foam at the steel cable, so as to avoid the white foam at the steel cable adhering to the surface of the steel pipe without being skimmed off when the steel pipe is suspended, thereby affecting the galvanizing quality; through the cooperation of an air pump with an air inlet pipe 2 and an air inlet pipe 3, the nozzle 2 on the jet plate 1 and the nozzle 3 on the jet plate 2 can achieve air drying of the outer wall and the inner wall of the suspended steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a stereogram of the present invention as a whole;

[0024] Figure 2 It is a three-dimensional diagram of the auxiliary plating tank of the present invention;

[0025] Figure 3 yes Figure 2 A partial enlarged view of the middle part;

[0026] Figure 4 is a first schematic diagram of a defoaming plate of the present invention;

[0027] Figure 5 is a second schematic diagram of the defoaming plate of the present invention;

[0028] Figure 6 It is an exploded view of one part of the arc frame of the present invention;

[0029] Figure 7is a cross-sectional view of the fixed sleeve of the present invention;

[0030] Figure 8 It is a stereoscopic view of the spray tank of the present invention;

[0031] In the figure: 1, rust removal tank; 2, auxiliary plating tank; 3, galvanizing tank; 4, hanging rail; 5, moving seat; 6, spray tank; 7, motor 1; 8, bevel gear 1; 9, bracket; 10, bevel gear 2; 11, screw; 12, screw sleeve; 13, support arm; 14, fixed sleeve; 15, foam removal plate; 16, guide plate; 17, horizontal groove 1; 18, vertical groove 1; 19, horizontal groove 2; 20, inclined groove 1; 21, limit block 1; 22, vertical groove 2; 23, step groove; 24, inclined groove 2; 25, limit block 2; 26, spring 1; 27, slider 1; 28, slider 2; 2 9. Spring 2; 30. T-block; 31. Guide block; 32. Spray pipe; 33. Spray head; 34. Water inlet pipe; 35. Drain pipe; 36. Mounting frame; 37. Air pump; 38. Inlet pipe 1; 39. Jet pipe; 40. Spray head 1; 41. Arc frame 1; 42. Arc frame 2; 43. Jet plate 1; 44. Jet plate 2; 45. Spray head 2; 46. Spray head 3; 47. Inlet pipe 2; 48. Inlet pipe 3; 49. Motor 2; 50. Rotating shaft; 51. Spur gear; 52. Arc rack plate 1; 53. Arc rack plate 2; 54. Slider 3. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figure 1-Figure 8As shown, a galvanizing device for producing hot-dip galvanized steel pipes described in an embodiment of the present invention comprises a plating-assisting tank 2, a rust removal tank 1 and a galvanizing tank 3 are respectively arranged on both sides of the plating-assisting tank 2, a hanging rail 4 is arranged above the plating-assisting tank 2, a moving seat 5 is slidably connected to the hanging rail 4, two steel cables are wound on the moving seat 5, two motors 7 are symmetrically installed on both sides of the top of the plating-assisting tank 2, a bevel gear 8 is fixedly connected to the output end of the motor 7, two bevel gears 10 are symmetrically meshed and connected on both sides of the bevel gear 8, a screw 11 is fixedly connected to the bevel gear 10, one end of the screw 11 is rotatably connected to a bracket 9, and the bracket 9 is provided with a screw rod 11. The bottom end of the frame 9 is fixedly connected to the side wall of the plating-assisting tank 2, a screw sleeve 12 is threadedly connected to the screw rod 11, and a support arm 13 is fixedly connected to the top of the screw sleeve 12. Two groups of defoaming plates 15 are symmetrically arranged on the top of the inner cavity of the plating-assisting tank 2, each group of defoaming plates 15 has two, and the defoaming plates 15 are L-shaped, and a gap is arranged between the two groups of defoaming plates 15, and they are adapted to the steel cable. A fixed sleeve 14 is provided on one side of the defoaming plate 15, and the top of the fixed sleeve 14 is fixedly connected to the support arm 13. Two groups of guide plates 16 are symmetrically fixedly connected to both sides of the top of the plating-assisting tank 2, each group of guide plates 16 has two, and the fixed sleeve 14 slides with the guide plate 16. When working, the staff cooperates with the sliding of the moving seat 5 and the hanging rail 4, so that the steel cable tilts the steel pipe and then immerses the steel pipe in the rust removal tank 1, the plating tank 2 and the galvanizing tank 3 in turn to complete the rust removal, plating and galvanizing operations. When the steel pipe is immersed in the plating tank 2 and is ready to be lifted, the motor 7 drives the bevel gear 8 to rotate, so that the bevel gear 2 10 drives the screw 11 to rotate, and then the screw sleeve 12 drives the fixed sleeve 14 and the defoaming plate 15 to slide to both sides. The defoaming plate 15 can push the white foam floating on the surface of the plating solution to both sides of the plating tank 2, effectively avoiding The invention solves the problem that the steel pipe is attached with white foam when it is rising, which further affects the subsequent galvanizing effect. The invention solves the problem in the prior art that, due to the use environment and cost of the plating solution, the plating solution in the plating solution tank 2 is generally not completely degassed during the immersion of the steel pipe, which results in white foam composed of bubbles and impurities floating on the surface of the plating solution. When the steel pipe is rising upward after being immersed in the plating solution tank 2, the white foam attached to the surface of the steel pipe will hinder the full contact between the zinc liquid and the surface of the steel pipe, resulting in uneven galvanizing layer, which affects the galvanizing effect of the steel pipe.

[0034] The bottom of the defoaming plate 15 is evenly provided with filter holes, and the guide plate 16 is provided with a transverse groove 17, a vertical groove 18, a transverse groove 19 and an inclined groove 20. The side of the inclined groove 20 close to the transverse groove 17 is fixedly connected to a limiting block 21, and the side of the limiting block 21 away from the transverse groove 17 is an inclined surface. A slider 27 is slidably connected in the inner cavity of the fixed sleeve 14, and a spring 26 is fixedly connected between the slider 27 and the top of the inner cavity of the fixed sleeve 14. A guide component is provided on the slider 27, and the guide component is connected to the transverse groove 17, the vertical groove 18, The horizontal groove 19 and the inclined groove 24 are both slidably matched, and the slider 1 27 is fixedly connected to the side of the defoaming plate 15 with the slider 3 54, and the end of the slider 3 54 away from the slider 1 27 extends to the outside of the fixed sleeve 14 and is fixed to the defoaming plate 15, and the slider 3 54 is slidably connected to the outer wall of the fixed sleeve 14; when working, before the steel pipe is immersed and lifted, the screw 11 is driven by the motor 17 to rotate forward and reverse, so that the screw sleeve 12 can drive the defoaming plate 15 to slide back and forth along the guide plate 16, and when the guide assembly slides in the horizontal groove 17 toward the vertical groove 18 When the guide assembly slides to the intersection of the horizontal groove 17 and the vertical groove 18, the defoaming plate 15 slides from both sides of the plating tank 2 to the center and is above the plating solution. The elastic force of the spring 26 causes the slider 27 to slide downward, causing the guide assembly to slide to the bottom of the vertical groove 18. At this time, the bottom of the defoaming plate 15 is immersed in the plating solution. When the screw sleeve 12 drives the defoaming plate 15 to slide to both sides of the plating tank 2 under the drive of the screw 11, the defoaming plate 15 will The white foam on the liquid surface is pushed to both sides, and the guide assembly slides along the transverse groove 19 until the guide assembly slides into the inclined groove 20 and slides along the inclined groove 20 to the transverse groove 17. The slider 27 is driven by the guide assembly to squeeze the spring 26 upward. At the same time, the defoaming plate 15 slides upward out of the plating liquid. Through the cooperation between the transverse groove 17, the vertical groove 18, the transverse groove 19 and the inclined groove 20 and the guide assembly, the defoaming plate 15 will not push the white foam on both sides of the plating tank 2 to the middle when it slides from both sides of the plating tank 2 to the center.

[0035] The guide assembly includes a slider 28 and a guide block 31. The slider 28 is fixedly connected to the side of the slider 17 close to the guide plate 16. The end of the slider 28 away from the slider 127 extends to the outside of the fixed sleeve 14, and the slider 28 is slidably connected to the fixed sleeve 14. A T-block 30 is slidably connected in the inner cavity of the slider 28. A spring 29 is fixedly connected between the T-block 30 and the inner wall of the slider 28. The end of the T-block 30 away from the spring 29 extends to the outside of the slider 28 and is fixedly connected to the guide block 31. The guide block 31 is slidably connected to the horizontal groove 17, the vertical groove 18, the horizontal groove 19 and the inclined groove 24. When working, the guide block 31 will not directly slide into the inclined groove 20 during the process of sliding from the transverse groove 17 to the vertical groove 18 through the limit block 21 provided in the inclined groove 20. When the guide block 31 slides along the inclined groove 20 to the transverse groove 17, the guide block 31 first slides on the inclined surface of the limit block 21, so that the T-block 30 slides into the slider 28 and squeezes the spring 29 until the guide block 31 slides from the limit block 21 to the transverse groove 17. The elastic force of the spring 29 will drive the guide block 31 to quickly fit with the transverse groove 17, so that the guide block 31 continues to slide along the transverse groove 17.

[0036] Both ends of the plating-assisting tank 2 are provided with a spray tank 6, a spray pipe 32 is fixedly connected to the top of the spray tank 6 away from the plating-assisting tank 2, one end of the spray pipe 32 is fixedly connected to a water inlet pipe 34, a spray head 33 is evenly fixedly connected to the outer wall of the spray pipe 32 on the side close to the plating-assisting tank 2, the spray head 33 is inclined downward, a drain pipe 35 is fixedly connected to the bottom of one side of the spray tank 6, and one end of the horizontal groove 17 away from the vertical groove 18 extends to the top of the spray tank 6; when working, when the guide block 31 slowly slides along the inclined groove 20, the defoaming plate 15 rises upward, and the plating-assisting liquid flows out from the defoaming plate The filter holes on 15 are discharged, and the white foam adheres to the surface of the defoaming plate 15. After the guide block 31 slides from the inclined groove 20 into the transverse groove 17, the screw 11 continues to drive the defoaming plate 15 to slide toward the side of the spray tank 6 until the guide block 31 slides to the end of the transverse groove 17 close to the spray tank 6. At this time, the water inlet pipe 34 of the external water pump delivers water to the spray pipe 32 and sprays water from the spray head 33 to flush the defoaming plate 15, so that the white foam attached to the defoaming plate 15 is washed away, so that the defoaming plate 15 can better skim off the white foam when it returns to the plating solution again.

[0037] The guide plate 16 is located above the spray trough 6 and is provided with a vertical groove 22, a stepped groove 23 and an inclined groove 24. The end of the horizontal groove 17 away from the vertical groove 18 is connected to the vertical groove 22. The vertical length of the vertical groove 22 is less than the vertical length of the vertical groove 18. The bottom end of the stepped groove 23 and the horizontal groove 19 are in the same horizontal plane. The side of the inclined groove 24 close to the horizontal groove 17 is fixedly connected to the limit block 25, and the side of the limit block 25 away from the horizontal groove 17 is an inclined surface. When working, when the guide block 31 slides to the intersection of the horizontal groove 17 and the vertical groove 22, the slider 1 27 slides downward quickly under the elastic force of the spring 1 26, so that the guide block 31 slides to the bottom of the vertical groove 22. The end, after that, the screw 11 drives the defoaming plate 15 to slide to the side of the vertical groove 18, and the guide block 31 slides from the vertical groove 22 to the stepped groove 23. During this process, the slider 27 continuously slides down under the elastic force of the spring 26, so that the defoaming plate 15 also continuously descends, and the collision between the guide block 31 and the stepped groove 23 generates vibration, which cooperates with the flushing of the spray head 33 to improve the flushing effect of the white foam on the defoaming plate 15. When the guide block 31 slides into the inclined groove 24, the slider 27 drives the defoaming plate 15 to start sliding up, and the spring 26 is compressed by the slider 27 again until the guide block 31 slides over the limit block 25, and the guide block 31 slides into the horizontal groove 17 again.

[0038] A mounting frame 36 is fixedly connected to the side of the defoaming plate 15 close to the spray tank 6, and an air pump 37 is fixedly installed on the side wall of the mounting frame 36. An air inlet pipe 38 is fixedly connected to the air pump 37. An air jet pipe 39 is fixedly connected to the end of the air inlet pipe 38 away from the air pump 37. The air jet pipe 39 is fixedly connected to the defoaming plate 15, and the air jet pipe 39 is inclined. A nozzle 40 is evenly fixedly connected to the side of the air jet pipe 39 close to the spray tank 6, and the nozzle 40 is inclined downward. During operation, due to the presence of the steel cable, there is a gap between the two groups of defoaming plates 15. When the defoaming plate 15 slides from the center of the plating aid tank 2 to both sides through the steel cable, the air pump 37 supplies air to the jet pipe 39 through the air inlet pipe 38, so that the nozzle 40 can blow the white foam on the surface of the plating aid solution and blow away the white foam at the steel cable, so as to avoid the white foam at the steel cable from being attached to the surface of the steel pipe when the steel pipe is lifted, thereby affecting the galvanizing quality.

[0039] The side of the mounting frame 36 away from the spray tank 6 is fixedly connected with an arc frame 41, and a jet plate 43 is slidably connected to the arc frame 41. The side of the jet plate 43 close to the jet pipe 39 is fixedly connected with an air intake pipe 47. The end of the air intake pipe 47 away from the jet plate 43 is fixedly connected to the air pump 37. The side of the jet plate 43 away from the jet pipe 39 is evenly fixedly connected with a nozzle 45, and the nozzle 45 is inclined inwardly. When working, when the defoaming plate 15 skims the white foam into the spray tank 6 and returns under the drive of the screw 11, the motor 1 can be controlled to control the motor 1. 7 makes the foam removal plate 15 slide to the two ends of the steel pipe. When the steel cable is rolled up to drive the steel pipe to rise and correspond to the arc frame 1 41, air can be sent into the jet plate 1 43 through the air pump 37 and the air inlet pipe 2 47, so that the nozzle 2 45 inclined inwardly can blow air toward the outer wall of the steel pipe. Because the steel pipe is in an inclined state, the gas sprayed by the nozzle 2 45 can not only separate the plating liquid on the outer wall of the steel pipe to achieve rapid drying, but also can blow away the white foam that may be attached to the outer wall of the steel pipe, further reducing the probability of white foam adhering to the outer wall of the steel pipe.

[0040] An arc frame 2 42 is fixedly connected to the inner side of the arc frame 1 41, and the arc frame 2 42 is coaxial with the arc frame 1 41. A jet plate 2 44 is slidably connected to the arc frame 2 42. An air intake pipe 3 48 is fixedly connected to the side of the jet plate 2 44 close to the jet pipe 39. The end of the air intake pipe 38 away from the jet plate 2 44 is fixedly connected to the air pump 37. A nozzle 3 46 is evenly fixedly connected to the side of the jet plate 2 44 away from the jet pipe 39, and the nozzle 3 46 is inclined outward. When working, air can be supplied to the jet plate 2 44 through the air pump 37 and the air intake pipe 3 48, so that the nozzle 3 46 can blow air to the inner wall of the steel pipe to dry it, and at the same time can further remove the white foam that may be attached to the inner wall of the steel pipe.

[0041] A motor 2 49 is fixedly installed on the top of the mounting frame 36, and a rotating shaft 50 is fixedly connected to the output end of the motor 2 49, and a spur gear 51 is fixedly connected to the rotating shaft 50. The two sides of the spur gear 51 are respectively meshed and connected with an arc-shaped rack plate 1 52 and an arc-shaped rack plate 2 53, the arc-shaped rack plate 1 52 is fixedly connected to the jet plate 1 43, and the arc-shaped rack plate 2 53 is fixedly connected to the jet plate 2 44; when working, the motor 2 49 drives the spur gear 51 to reciprocate at a small angle, so that the arc-shaped rack plate 1 52 and the arc-shaped rack plate 2 53 drive the jet plate 1 43 and the jet plate 2 44 to reciprocate at a small angle, so that the nozzle 2 45 and the nozzle 3 46 can cover the outer wall and the inner wall of the steel pipe, making up for the existing dead angle of blowing.

[0042] A galvanizing method for producing hot-dip galvanized steel pipes, which is applicable to the above-mentioned galvanizing device for producing hot-dip galvanized steel pipes, and comprises the following steps:

[0043] S1: The staff slides the movable seat 5 and the hanging rail 4 to make the steel cable tilt the steel pipe and then immerse the steel pipe in the rust removal tank 1, the plating assistance tank 2 and the galvanizing tank 3 in turn to complete the rust removal, plating assistance and galvanizing operations;

[0044] S2: When the steel pipe is ready to be lifted after being immersed in the plating assisting tank 2, the driving motor 7 can drive the defoaming plate 15 to slide to both sides, and the defoaming plate 15 pushes the white foam floating on the surface of the plating assisting solution to both sides of the plating assisting tank 2, thereby preventing the steel pipe from being attached to the white foam when it is lifted, thereby affecting the subsequent galvanizing effect;

[0045] S3: The air pump 37 cooperates with the air inlet pipe 1 38, so that the nozzle 1 40 on the jet pipe 39 can blow away the white foam on the steel cable. The air pump 37 cooperates with the air inlet pipe 2 47 and the air inlet pipe 3 48, so that the nozzle 2 45 on the jet plate 1 43 and the nozzle 3 46 on the jet plate 2 44 can blow and dry the outer wall and the inner wall of the suspended steel pipe.

[0046] Working principle: the staff uses the sliding cooperation between the moving seat 5 and the hanging rail 4 to make the steel cable tilt and lift the steel pipe, and then immerse the steel pipe in the rust removal tank 1, the plating tank 2 and the galvanizing tank 3 in turn to complete the rust removal, plating and galvanizing operations. When the steel pipe is immersed in the plating tank 2 and is ready to be lifted, the motor 17 drives the bevel gear 18 to rotate, so that the bevel gear 2 10 drives the screw 11 to rotate, and then the screw sleeve 12 drives the fixed sleeve 14 and the defoaming plate 15 to slide to both sides. The defoaming plate 15 can push the white foam floating on the surface of the plating solution to the two sides of the plating tank 2, which effectively avoids the white foam adhering to the steel pipe when it is lifted, thereby affecting the subsequent galvanizing effect, and solves the problem in the prior art that the plating solution in the plating tank 2 is too dry due to the use environment and cost of the plating solution. The liquid is generally not completely degassed during the soaking process of the steel pipe, which results in white foam composed of bubbles and impurities floating on the surface of the plating solution, so that the steel pipe will be attached to the surface by these white foams during the process of rising upward after soaking in the plating tank 2. The white foam attached to the surface of the steel pipe will hinder the full contact between the zinc liquid and the surface of the steel pipe, resulting in uneven galvanized layer, which affects the galvanizing effect of the steel pipe. Before the steel pipe is immersed and lifted, the motor 7 drives the screw 11 to rotate forward and reverse, so that the screw sleeve 12 can drive the defoaming plate 15 to slide back and forth along the guide plate 16. When the guide component slides in the horizontal groove 17 toward the vertical groove 18, the spring 26 is in a compressed state. Until the guide component slides to the intersection of the horizontal groove 17 and the vertical groove 18, the defoaming plate 15 slides from both sides of the plating tank 2 to the center and is above the plating solution. Through the elastic force of the spring 26, the slider 27 drives the guide component to slide downward, so that the guide component slides to the bottom of the vertical groove 18. At this time, the bottom of the defoaming plate 15 is immersed in the plating solution. When the screw sleeve 12 drives the defoaming plate 15 to slide to both sides of the plating tank 2 under the drive of the screw 11, the defoaming plate 15 pushes the white foam on the surface of the plating solution to both sides, and the guide component slides along the transverse groove 19 until the guide component slides into the inclined groove 20 and slides along the inclined groove 20 to the transverse groove 17. The slider 27 squeezes the spring 26 upward under the drive of the guide component. At the same time, the defoaming plate 15 slides out of the plating solution upward through the transverse groove 17, the vertical groove 18, the transverse groove 19 and The cooperation between the inclined groove 20 and the guide assembly ensures that the foam removal plate 15 will not push the white foam on both sides of the plating aid tank 2 toward the middle when sliding from both sides of the plating aid tank 2 toward the center. The limit block 21 provided in the inclined groove 20 ensures that the guide block 31 will not directly slide into the inclined groove 20 when sliding from the transverse groove 17 to the vertical groove 18. When the guide block 31 slides along the inclined groove 20 to the transverse groove 17, the guide block 31 first slides on the inclined surface of the limit block 21, so that the T-block 30 slides into the slider 28 and squeezes the spring 29, until the guide block 31 slides from the limit block 21 to the transverse groove 17, the elastic force of the spring 29 will drive the guide block 31 to quickly fit with the transverse groove 17, so that the guide block 31 continues to slide along the transverse groove 17.When the guide block 31 slides slowly along the inclined groove 20, the defoaming plate 15 rises upward, the plating liquid is discharged from the filter holes on the defoaming plate 15, and the white foam adheres to the surface of the defoaming plate 15. After the guide block 31 slides from the inclined groove 20 into the transverse groove 17, the screw 11 continues to drive the defoaming plate 15 to slide toward the side of the spray tank 6 until the guide block 31 slides to the end of the transverse groove 17 close to the spray tank 6. At this time, the water inlet pipe 34 of the external water pump delivers water to the spray pipe 32 and sprays water from the spray head 33 to flush the defoaming plate 15, so that the white foam attached to the defoaming plate 15 is washed away, and then the defoaming plate 15 can better skim the white foam when it returns to the plating liquid again. When the guide block 31 slides to the intersection of the transverse groove 17 and the vertical groove 22, the slider 27 is in The guide block 31 slides to the bottom of the vertical groove 22 under the elastic force of the spring 1 26, and then the screw 11 drives the defoaming plate 15 to slide to the side of the vertical groove 18, and the guide block 31 slides from the vertical groove 22 to the stepped groove 23. During this process, the slider 1 27 continuously slides down under the elastic force of the spring 1 26, so that the defoaming plate 15 also continuously descends, and the collision between the guide block 31 and the stepped groove 23 generates vibration, which cooperates with the flushing of the spray head 33 to improve the flushing effect of the white foam on the defoaming plate 15. When the guide block 31 slides into the inclined groove 24, the slider 1 27 drives the defoaming plate 15 to start sliding up, and the spring 1 26 is compressed by the slider 1 27 again until the guide block 31 slides over the limit block 25, and the guide block 31 slides again When the defoaming plates 15 slide from the center of the plating aid tank 2 to both sides through the steel cables, the air pump 37 delivers air to the jet pipe 39 through the air inlet pipe 38, so that the nozzle 40 can blow the white foam on the surface of the plating aid solution and blow away the white foam at the steel cables, so as to avoid the white foam at the steel cables from being attached to the surface of the steel pipe when the steel pipe is lifted, thereby affecting the galvanizing quality. When the defoaming plates 15 skim the white foam into the spray tank 6 and return under the drive of the screw 11, the defoaming plates 15 can be slid to the two ends of the steel pipe by controlling the motor 7. When the steel cables are wound up to drive the steel pipe to rise and correspond to the arc frame 41, the air pump 37 and the air inlet pipe 47 can be used to blow air to the jet pipe 39. Air is supplied into the second nozzle plate 43, so that the nozzle head 45 tilted inward can blow air toward the outer wall of the steel pipe. Because the steel pipe is in an inclined state, the gas sprayed by the second nozzle 45 can not only separate the plating liquid on the outer wall of the steel pipe to achieve rapid drying, but also blow away the white foam that may be attached to the outer wall of the steel pipe, further reducing the probability of the white foam adhering to the outer wall of the steel pipe. The air pump 37 cooperates with the air inlet pipe 3 48 to supply air to the second jet plate 44, so that the nozzle head 3 46 can blow air to dry the inner wall of the steel pipe and further remove the white foam that may be attached to the inner wall of the steel pipe. The motor 2 49 drives the spur gear 51 to reciprocate at a small angle, so that the arc rack plate 1 52 and the arc rack plate 2 53 drive the jet plate 1 43 and the jet plate 2 44 to reciprocate at a small angle.Thus, the nozzle 2 45 and the nozzle 3 46 can cover the outer wall and the inner wall of the steel pipe, making up for the existing air blowing dead angle.

[0047] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A galvanizing device for producing hot-dip galvanized steel pipes, characterized in that: The invention comprises a plating-assisting tank (2), wherein a rust removal tank (1) and a galvanizing tank (3) are respectively arranged on both sides of the plating-assisting tank (2), a hanging rail (4) is arranged above the plating-assisting tank (2), a moving seat (5) is slidably connected to the hanging rail (4), two steel cables are rolled up on the moving seat (5), two motors (7) are symmetrically installed on both sides of the top of the plating-assisting tank (2), an output end of the motor (7) is fixedly connected to a bevel gear (8), two bevel gears (10) are symmetrically meshed and connected on both sides of the bevel gear (8), a screw (11) is fixedly connected to the bevel gear (10), one end of the screw (11) is rotatably connected to a bracket (9), and the bottom end of the bracket (9) is connected to the side wall of the plating-assisting tank (2). The screw rod (11) is fixedly connected with a screw sleeve (12) by thread, and the top of the screw sleeve (12) is fixedly connected with a support arm (13). The top of the inner cavity of the plating-assisting tank (2) is symmetrically provided with two groups of defoaming plates (15), each group of the defoaming plates (15) has two, and the defoaming plates (15) are L-shaped, and a gap is provided between the two groups of the defoaming plates (15) and are adapted to the steel cable. A fixed sleeve (14) is provided on one side of the defoaming plate (15), and the top of the fixed sleeve (14) is fixedly connected with the support arm (13). Two groups of guide plates (16) are symmetrically fixedly connected to the two sides of the top of the plating-assisting tank (2), each group of the guide plates (16) has two, and the fixed sleeve (14) and the guide plate (16) are slidably matched.

2. The galvanizing device for producing hot-dip galvanized steel pipe according to claim 1, characterized in that: The bottom of the defoaming plate (15) is evenly provided with filter holes. The guide plate (16) is provided with a transverse groove (17), a vertical groove (18), a transverse groove (19) and an inclined groove (20). A side of the inclined groove (20) close to the transverse groove (17) is fixedly connected to a limiting block (21). A side of the limiting block (21) away from the transverse groove (17) is in an inclined surface. A sliding block (27) is slidably connected in the inner cavity of the fixed sleeve (14). The sliding block (27) is in contact with the top of the inner cavity of the fixed sleeve (14). A spring (26) is fixedly connected between the slider (27), and a guide assembly is provided on the slider (27). The guide assembly is slidably matched with the transverse groove (17), the vertical groove (18), the transverse groove (19) and the inclined groove (24). A slider (54) is fixedly connected to the side of the slider (27) close to the foam removal plate (15). The end of the slider (54) away from the slider (27) extends to the outside of the fixed sleeve (14) and is fixedly connected to the foam removal plate (15). The slider (54) is slidably connected to the outer wall of the fixed sleeve (14).

3. The galvanizing device for producing hot-dip galvanized steel pipe according to claim 2, characterized in that: The guide assembly comprises a second slider (28) and a guide block (31); the second slider (28) is fixedly connected to one side of the first slider (27) close to the guide plate (16); the second slider (28) extends to the outside of the fixed sleeve (14) at one end away from the first slider (27); and the second slider (28) is slidably connected to the fixed sleeve (14); a T-shaped block (30) is slidably connected in the inner cavity of the second slider (28); a second spring (29) is fixedly connected between the T-shaped block (30) and the inner wall of the second slider (28); the end of the T-shaped block (30) away from the second spring (29) extends to the outside of the second slider (28) and is fixedly connected to the guide block (31); and the guide block (31) is slidably connected to the first transverse groove (17), the first vertical groove (18), the second transverse groove (19) and the second inclined groove (24).

4. The galvanizing device for producing hot-dip galvanized steel pipe according to claim 3, characterized in that: Both ends of the plating-assisting tank (2) are provided with a spray tank (6); a spray pipe (32) is fixedly connected to the top of the spray tank (6) away from the plating-assisting tank (2); one end of the spray pipe (32) is fixedly connected to a water inlet pipe (34); a spray head (33) is evenly fixedly connected to the outer wall of the spray pipe (32) close to the plating-assisting tank (2); the spray head (33) is inclined downward; a drainage pipe (35) is fixedly connected to the bottom of one side of the spray tank (6); and one end of the horizontal groove (17) away from the vertical groove (18) extends to the top of the spray tank (6).

5. The galvanizing device for producing hot-dip galvanized steel pipe according to claim 4, characterized in that: The guide plate (16) is provided with a second vertical groove (22), a stepped groove (23) and a second inclined groove (24) at a position above the spray groove (6); an end of the first transverse groove (17) away from the first vertical groove (18) is connected to the second vertical groove (22); the vertical length of the second vertical groove (22) is smaller than the vertical length of the first vertical groove (18); the bottom end of the stepped groove (23) and the second transverse groove (19) are in the same horizontal plane; a side of the second inclined groove (24) close to the first transverse groove (17) is fixedly connected to a second limiting block (25); a side of the second limiting block (25) away from the first transverse groove (17) is in an inclined surface.

6. A galvanizing device for producing hot-dip galvanized steel pipe according to claim 5, characterized in that: A mounting frame (36) is fixedly connected to one side of the defoaming plate (15) close to the spraying trough (6); an air pump (37) is fixedly installed on the side wall of the mounting frame (36); an air intake pipe (38) is fixedly connected to the air pump (37); an air injection pipe (39) is fixedly connected to one end of the air intake pipe (38) away from the air pump (37); the air injection pipe (39) is fixedly connected to the defoaming plate (15), and the air injection pipe (39) is inclined; a nozzle (40) is evenly fixedly connected to one side of the air injection pipe (39) close to the spraying trough (6); the nozzle (40) is inclined downward.

7. A galvanizing device for producing hot-dip galvanized steel pipes according to claim 6, characterized in that: The mounting frame (36) is fixedly connected to an arc frame (41) on one side away from the spray tank (6), and a jet plate (43) is slidably connected to the arc frame (41). An air intake pipe (47) is fixedly connected to one side of the jet plate (43) close to the jet pipe (39), and one end of the air intake pipe (47) away from the jet plate (43) is fixedly connected to the air pump (37). A nozzle (45) is evenly fixedly connected to one side of the jet plate (43) away from the jet pipe (39), and the nozzle (45) is inclined inwardly.

8. A galvanizing device for producing hot-dip galvanized steel pipe according to claim 7, characterized in that: The inner side of the arc frame 1 (41) is fixedly connected with an arc frame 2 (42), the arc frame 2 (42) is coaxial with the arc frame 1 (41), and the arc frame 2 (42) is slidably connected with an air jet plate 2 (44), a side of the air jet plate 2 (44) close to the air jet pipe (39) is fixedly connected with an air intake pipe 3 (48), an end of the air intake pipe 3 (48) away from the air jet plate 2 (44) is fixedly connected to the air pump (37), and a side of the air jet plate 2 (44) away from the air jet pipe (39) is evenly fixedly connected with a nozzle 3 (46), and the nozzle 3 (46) is inclined outward.

9. A galvanizing device for producing hot-dip galvanized steel pipes according to claim 8, characterized in that: A second motor (49) is fixedly mounted on the top of the mounting frame (36); a rotating shaft (50) is fixedly connected to the output end of the second motor (49); a spur gear (51) is fixedly connected to the rotating shaft (50); arc-shaped rack plate 1 (52) and arc-shaped rack plate 2 (53) are respectively meshed and connected on both sides of the spur gear (51); the arc-shaped rack plate 1 (52) is fixedly connected to the first jet plate (43); and the arc-shaped rack plate 2 (53) is fixedly connected to the second jet plate (44).

10. A galvanizing method for producing hot-dip galvanized steel pipes, characterized in that: The method is applicable to a galvanizing device for producing hot-dip galvanized steel pipes as described in any one of claims 1 to 9, and the method comprises the following steps: S1: The staff uses the sliding cooperation between the movable seat (5) and the hanging rail (4) to make the steel cable tilt and hang the steel pipe, and then immerse the steel pipe in the rust removal tank (1), the plating assistance tank (2) and the galvanizing tank (3) in sequence to complete the rust removal, plating assistance and galvanizing operations; S2: When the steel pipe is ready to be lifted after being immersed in the plating-assisting tank (2), the driving motor (7) can drive the defoaming plate (15) to slide to both sides, and the defoaming plate (15) pushes the white foam floating on the surface of the plating-assisting liquid to both sides of the plating-assisting tank (2), thereby preventing the steel pipe from being attached to the white foam when being lifted, thereby affecting the subsequent galvanizing effect; S3: The air pump (37) cooperates with the air inlet pipe 1 (38) so that the nozzle 1 (40) on the air jet pipe (39) can blow away the white foam at the steel cable. The air pump (37) cooperates with the air inlet pipe 2 (47) and the air inlet pipe 3 (48) so that the nozzle 2 (45) on the air jet plate 1 (43) and the nozzle 3 (46) on the air jet plate 2 (44) can blow and dry the outer wall and the inner wall of the suspended steel pipe.

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