Automatic hot galvanizing device for multiple steel pipes

Abstract

The invention provides a multi-steel-pipe automatic hot galvanizing device which comprises a first material distribution slide way, a first material stirring fluted disc, a middle shaft, a truss and a lifting plate, the first material distribution slide way is sequentially provided with a plurality of material passing gaps from inside to outside, and each material passing gap is used for guiding one to-be-produced steel pipe; and the outlet end of each material passing gap corresponds to a magnetic suction roller of one V-shaped magnetic roller. According to the automatic hot galvanizing device for the multiple steel pipes, the first material distributing sliding way is infiltrated in the zinc melting pot, the multiple steel pipes can be distributed through the first material distributing sliding way to slide into the zinc melting pot, so that each steel pipe can make full contact with liquid zinc, the positions of the steel pipes in the zinc melting pot can be stirred through the first material stirring fluted disc, and the steel pipes can be separated from the zinc melting pot through the first material stirring fluted disc; the steel pipes are lifted to the preset position through the lifting plate, the steel pipes are guided out through the V-shaped magnetic rollers, the multiple steel pipes can be galvanized at the same time through the device, the production efficiency is improved, and the production quality is guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of hot-dip galvanizing, and in particular relates to a multi-branch automatic hot-dip galvanizing device for steel pipes. Background Art

[0002] In recent years, with the rapid development of national infrastructure and urban construction, especially in bridge construction and urban curtain wall decoration, the use of galvanized rectangular steel pipes has increased dramatically. In particular, the demand for rectangular hot-dip galvanized pipes has increased year by year due to their thin thickness and light weight. Existing steel pipe hot-dip galvanizing companies cannot meet the market demand for rectangular steel pipes.

[0003] The current domestic process flow for hot-dip galvanizing of steel pipes is: steel pipe → pickling and rust removal → 2 rinses with clean water → solvent activation and plating → drying treatment → hot-dip galvanizing → water cooling → anti-white rust treatment → hot air drying → marking → quality inspection → packaging and storage. The above-mentioned hot-dip galvanizing process for steel pipes cannot meet the quality requirements of hot-dip galvanizing of multiple sides and rectangles at the same time; for this reason, in recent years, domestic hot-dip galvanizing companies for steel pipes have been researching and developing hot-dip galvanizing processes and implementations of multiple sides and rectangles. As of now, due to many reasons, the quality standard requirements for the galvanized layer have not been met, and the galvanizing devices in the existing technology all need to process the products one by one, with low lifting efficiency and high equipment investment cost, which is a technical problem that needs to be solved urgently. Summary of the invention

[0004] In view of this, the present invention aims to propose a multi-branch automatic hot-dip galvanizing device for steel pipes to solve the problems that the prior art galvanizing devices need to process products one by one, have low lifting efficiency and high equipment investment cost.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows: A multi-branch automatic hot-dip galvanizing device for steel pipes comprises a first material distribution slide, a first material distribution toothed disc, a central axis, a truss and a lifting plate. The first material distribution toothed disc is sleeved on the outer periphery of the central axis, and the central axis is rotatably sleeved into a molten zinc pot through the truss, and the truss is installed on the molten zinc pot. A first material distribution slide is arranged on one side of the first material distribution toothed disc, and a plurality of material transfer gaps are arranged in sequence from the inside to the outside of the first material distribution slide, each material transfer gap is used to guide a steel pipe to be produced, and the inlet and outlet ends of the material transfer gap are both located outside the molten zinc pot. A lifting plate is arranged on the truss, and the execution end of the lifting plate is located in the molten zinc pot, and the execution end of the lifting plate can abut against the outer periphery of each steel pipe and lift the steel pipe. The lifted steel pipe end faces a V-shaped magnetic roller, and the V-shaped magnetic roller is used to guide the steel pipe out of the molten zinc pot, and the outlet end of each material transfer gap corresponds to a magnetic suction roller of a V-shaped magnetic roller.

[0006] Furthermore, the central shaft is provided with a first material diverter tooth disc and multiple second material diverter tooth discs axially, a first material dividing slide is provided on one side of the first material diverter tooth disc, a second material dividing slide is provided on one side of each second material diverter tooth disc, and the first material diverter tooth disc and the second material diverter tooth disc have the same structure, the first material diverter tooth disc includes a fixed sleeve, the fixed sleeve is fixedly sleeved to the periphery of the central shaft, and multiple diverter plates are evenly distributed circumferentially around the periphery of the fixed sleeve.

[0007] Furthermore, the cross section of the second material distribution chute is a U-shaped structure, and each second material distribution chute is fixedly mounted on the zinc melting pot or the truss; Furthermore, the length of the paddle on the first material-diverting gear disc is greater than the length of the paddle on each second material-diverting gear disc, and the lengths of the paddles on the plurality of second material-diverting gear discs decrease as they move away from the first material-diverting gear disc; Furthermore, the inner circle bottom of the material transfer gap is lower than the inner circle bottom of each second material distribution slideway, and the height of the inner circle bottom of the plurality of second material distribution slideways gradually increases in the direction away from the first material distribution toothed disc.

[0008] Furthermore, a pull-out rod is installed on the truss, and the execution end of the pull-out rod is located in the molten zinc pot, the pull-out rod is rotatably connected to the truss through a first pin shaft, and the other end of the pull-out rod is rotatably connected to the movable end of the first push rod, the periphery of the first push rod is installed on the truss, and the execution end of the pull-out rod is located between the first material-pulling tooth disc and the second material-pulling tooth disc, or between two adjacent second material-pulling tooth discs; Furthermore, a support plate is provided on the side wall of each second material distribution slideway close to the outlet end of the material gap, and the height of the support plates on the plurality of second material distribution slideways gradually increases as the direction moves away from the first material shifting toothed disc; Furthermore, the pushing rod can push the steel pipe on the pushing plate of the second material pushing toothed disc in the second material dividing slideway onto the support plate.

[0009] Furthermore, the execution end of the lifting plate is located in the molten zinc pot, and a lifting rod is installed on the other end of the lifting plate. A second push rod is set at one end of the lifting rod, and the second push rod is installed on the truss. The outer periphery of the lifting rod is slidably connected to the sleeve, and the outer periphery of the sleeve is rotatably connected to the truss. A first gear is sleeved on the sleeve, and the outer periphery of the first gear is meshed with one side of the first rack. One end of the first rack is installed to the movable end of the third push rod, and the third push rod is fixedly installed on the truss.

[0010] Furthermore, a lifting sleeve is provided at one end of the lifting rod, the outer diameter of the lifting sleeve is larger than the outer diameter of the lifting rod, the lower end of the lifting sleeve abuts against one end of the push rod, the other end of the push rod is connected to the movable end of the second push rod, and the second push rod and the lifting rod are arranged parallel to each other.

[0011] Furthermore, the lifting rod is an L-shaped structure, and a groove matching the outer contour of the steel pipe is provided on the upper side of the execution end of the lifting rod.

[0012] Furthermore, a downward pressure device is installed on the truss, and the downward pressure device includes a linkage shaft, and one end of the linkage shaft is fixedly installed to the output end of the driving motor, the driving motor is installed on the truss, a plurality of second gears are arranged axially along the linkage shaft, and a second rack is meshed on the periphery of each second gear, the second rack is fixedly installed on one side of the downward pressure rod, the periphery of the downward pressure rod is slidably connected to the truss, and a transverse pressure plate is arranged at the lower end of the downward pressure rod, and the periphery of the transverse pressure plate can abut against the periphery of the steel pipe.

[0013] Furthermore, a stepping mechanism is arranged outside the zinc molten pot, and the stepping mechanism is used to put the steel pipe to be produced into the zinc molten pot, and the stepping mechanism includes a fixed seat, and a plurality of fixed receiving plates are arranged on the fixed seat, and the plurality of fixed receiving plates are arranged parallel to each other and vertically arranged along the traveling direction of the steel pipe to be produced, and a plurality of swing receiving plates are arranged on the fixed seat, and the swing receiving plates and the fixed receiving plates are arranged parallel to each other, and each swing receiving plate is equipped with two swing arms, and the two swing arms are arranged parallel to each other, and one end of each swing arm is rotatably connected to the lower end of the swing receiving plate, and the middle part of each swing arm is fixedly sleeved on the swing shaft, and each swing shaft is rotatably sleeved on the fixed seat, and each swing shaft can be synchronously rotated by a swing motor; Furthermore, receiving grooves are evenly distributed on the upper ends of the fixed receiving plate and the swing receiving plate along the traveling direction of the steel pipe to be produced.

[0014] Furthermore, the surfaces of the first material distribution chute and the second material distribution chute are subjected to boronization and rare earth element heat treatment respectively.

[0015] Compared with the prior art, the multi-branch automatic hot-dip galvanizing device for steel pipes described in the present invention has the following beneficial effects: (1) The present invention discloses a device for automatically hot-dip galvanizing multiple steel pipes. The first material distribution slide is immersed in the molten zinc pot. Multiple steel pipes can be slid into the molten zinc pot through the first material distribution slide, so that each steel pipe can fully contact the liquid zinc. The position of the steel pipe in the molten zinc pot can be stirred by the first material distribution gear plate. The steel pipe is lifted to a preset position by a lifting plate and guided out by a V-shaped magnetic roller. The device can simultaneously perform galvanizing operations on multiple steel pipes, thereby improving production efficiency and ensuring production quality.

[0016] (2) The present invention discloses a multi-branch automatic hot-dip galvanizing device for steel pipes. When the steel pipes are in the molten zinc pot and at the bottom of the first material distribution chute and the second material distribution chute, the steel pipes are obliquely arranged in the molten zinc pot, and the suction connection end of the steel pipes and the V-shaped magnetic roller is at the very bottom. When the steel pipes are lifted by the lifting plate and the V-shaped magnetic roller acts on the ends of the steel pipes, the steel pipes are obliquely arranged in the molten zinc pot, and the suction connection end of the steel pipes and the V-shaped magnetic roller is at the very top, so that the steel pipes are always in an oblique arrangement, which is convenient for liquid zinc to be coated on the surface of the steel pipes and improves the galvanizing quality.

[0017] (3) The present invention discloses an automatic hot-dip galvanizing device for multiple steel pipes. The push-out rod can push the steel pipes in the second material distribution slide and on the push plate of the second material distribution tooth disc into the support plate. The push-out rod acts on the lateral fluctuation of the steel pipe in the second material distribution slide. When the second material distribution slide is equipped with a second material distribution tooth disc to drive the steel pipe to rotate, the steel pipe is always overlapped on the push plate of the second material distribution tooth disc. The push-out rod can push the steel pipe on the push plate onto the support plate, so that the steel pipe is free from the interference of the second material distribution tooth disc, and can also disperse the stacked multiple steel pipes to prepare for the effective operation of the back-end process.

[0018] (4) In the multi-branch automatic hot-dip galvanizing device for steel pipes described in the present invention, the second push rod is used to push the first rack to move axially, and the first rack can drive the first gear to rotate. The rotating first gear drives the lifting rod and the sliding rod to rotate, and the lifting rod is an L-shaped structure. The upper side of the execution end of the lifting rod is provided with a groove adapted to the outer contour of the steel pipe. When the lifting rod is in a non-working state, the lifting rod is attached to the side wall of the molten zinc pot. When the first gear drives the lifting rod and the sliding rod to rotate, the groove is opposite to the outer periphery of the steel pipe, so that the lifting rod can drive the pipe end of the steel pipe to move upward.

[0019] (5) The present invention discloses an automatic hot-dip galvanizing device for multiple steel pipes. The pressing device can press down the steel pipe through a horizontal pressing plate, and multiple pressing devices can be arranged along the axial direction of the steel pipe. The above device solves the problem of galvanizing leakage caused by the thin wall of square and rectangular steel pipes, the light weight of a single pipe, and the easy floating in the zinc liquid; at the same time, it avoids the problem of waste caused by defects such as pipe blocking and bending due to floating in the zinc liquid due to the light weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 It is a front view schematic diagram of a multi-branch automatic hot-dip galvanizing device for steel pipes according to an embodiment of the present invention; Figure 2 It is a schematic side view of a multi-branch automatic hot-dip galvanizing device for steel pipes according to an embodiment of the present invention; Figure 3It is a structural schematic diagram of the assembly of the lifting plate and the matching parts according to an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a lifting plate according to an embodiment of the present invention; Figure 5 It is a structural schematic diagram of the pressing device according to an embodiment of the present invention; Figure 6 It is a structural schematic diagram of the transverse pressure plate according to an embodiment of the present invention; Figure 7 It is a schematic diagram of the structure of the cooperation among the central shaft, the first material distribution slide and the second material distribution slide according to an embodiment of the present invention; Figure 8 It is a side view schematic diagram of the cooperation between the central shaft, the first material distribution slide and the second material distribution slide according to an embodiment of the present invention; Fig. 9 It is a front view schematic diagram of the second material distribution chute described in an embodiment of the present invention.

[0021] Description of reference numerals: 1-stepping mechanism; 101-fixed seat; 102-swing receiving plate; 103-swing arm; 104-swing shaft; 105-receiving groove; 2-first material distribution slide; 201-material passing gap; 3-second material distribution slide; 301-support plate; 4-first material distribution toothed disc; 401-fixed sleeve; 402-displacing plate; 5-middle axis; 6-truss; 7-displacing rod; 701-first push rod; 8-lifting plate ;801-lifting rod;802-second push rod;803-sleeve;804-first rack;805-third push rod;806-slot;807-lifting sleeve;808-push rod;9-zinc melting pot;10-V-shaped magnetic roller;11-second material-push gear disk;12-pressing device;121-coupling shaft;122-second gear;123-pressing rod;124-cross pressure plate;13-steel pipe. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0026] like Figure 1-Figure 9 As shown, a steel pipe multi-branch automatic hot-dip galvanizing device includes a first material distribution slide 2, a first material distribution toothed disc 4, a central axis 5, a truss 6 and a lifting plate 8. The first material distribution toothed disc 4 is sleeved on the periphery of the central axis 5, and the central axis 5 is rotatably sleeved into a zinc melting pot 9 through the truss 6, and the truss 6 is installed on the zinc melting pot 9. A first material distribution slide 2 is arranged on one side of the first material distribution toothed disc 4, and a plurality of material passing gaps 201 are sequentially arranged on the first material distribution slide 2 from the inside to the outside, as shown in FIG. Figure 1As shown, the present embodiment is provided with four feed gaps 201, and four steel pipes 13 to be produced can be galvanized at the same time, and the steel pipes 13 to be produced can be rectangular pipes or round pipes. The steel pipes 13 to be produced in the present embodiment are rectangular pipes, and each feed gap 201 is used to guide a steel pipe 13 to be produced, and the inlet end and the outlet end of the feed gap 201 are both located outside the zinc melting pot 9. A lifting plate 8 is provided on the truss 6, and the execution end of the lifting plate 8 is located in the zinc melting pot 9, and the execution end of the lifting plate 8 can abut against the periphery of each steel pipe 13 and lift the steel pipe 13. The lifted end of the steel pipe 13 faces the V-shaped magnetic roller 10, which is a prior art and is used to guide the steel pipe 13 out of the molten zinc pot 9. The outlet end of each material gap 201 corresponds to a magnetic suction roller of a V-shaped magnetic roller 10. The first material distribution slide 2 is immersed in the molten zinc pot 9. Multiple steel pipes 13 can be diverted and slide into the molten zinc pot 9 through the first material distribution slide 2, so that each steel pipe 13 can fully contact the liquid zinc. The position of the steel pipe 13 in the molten zinc pot 9 can be stirred by the first material distribution gear 4, and the steel pipe 13 is lifted to a preset position by the lifting plate 8, and is guided out by the V-shaped magnetic roller 10. The device can simultaneously perform galvanizing operations on multiple steel pipes 13, thereby improving production efficiency and ensuring production quality.

[0027] like Figure 2 and Figure 7 As shown, a first material-dividing toothed disc 4 and a plurality of second material-dividing toothed discs 11 are axially provided on the central axis 5, a first material-dividing slide 2 is provided on one side of the first material-dividing toothed disc 4, a second material-dividing slide 3 is provided on one side of each second material-dividing toothed disc 11, and the first material-dividing toothed disc 4 and the second material-dividing toothed disc 11 have the same structure, the first material-dividing toothed disc 4 includes a fixed sleeve 401, the fixed sleeve 401 is fixedly sleeved to the periphery of the central axis 5, a plurality of shifting plates 402 are evenly distributed along the circumferential direction on the periphery of the fixed sleeve 401, the first material-dividing toothed disc 4 and the second material-dividing toothed disc 11 are respectively used to drive the position of the steel pipe 13 in the molten zinc pot 9, and the plurality of second material-dividing slides 3 are used to support the steel pipe 13 to prevent the steel pipe 13 from falling into the molten zinc pot 9 and being inconvenient to extract.

[0028] The cross section of the second material distribution slide 3 is a U-shaped structure, and each second material distribution slide 3 is fixedly installed on the zinc melting pot 9 or the truss 6; the length of the dial plate 402 on the first material distribution toothed disc 4 is greater than the length of the dial plate 402 on each second material distribution toothed disc 11, and the length of the dial plates 402 on the multiple second material distribution toothed discs 11 decreases as they move away from the first material distribution toothed disc 4; the inner ring bottom of the material transfer gap 201 is lower than the inner ring bottom of each second material distribution slide 3, and the height of the inner ring bottom of the multiple second material distribution slides 3 gradually increases as they move away from the first material distribution toothed disc 4, such as Figure 2As shown, when the steel pipe 13 is in the molten zinc pot 9 and at the bottom of the first distribution chute 2 and the second distribution chute 3, the steel pipe 13 is obliquely arranged in the molten zinc pot 9, and the suction connection end of the steel pipe 13 and the V-shaped magnetic roller 10 is at the bottom; when the steel pipe 13 is lifted by the lifting plate 8 and the V-shaped magnetic roller 10 acts on the end of the steel pipe 13, the steel pipe 13 is obliquely arranged in the molten zinc pot 9, and the suction connection end of the steel pipe 13 and the V-shaped magnetic roller 10 is at the top, so that the steel pipe 13 is always in an oblique arrangement, which is convenient for liquid zinc to be coated on the surface of the steel pipe 13 and improves the galvanizing quality.

[0029] A push rod 7 is installed on the truss 6, and the execution end of the push rod 7 is located in the molten zinc pot 9. The push rod 7 is rotatably connected to the truss 6 through a first pin shaft, and the other end of the push rod 7 is rotatably connected to the movable end of the first push rod 701. The periphery of the first push rod 701 is installed on the truss 6, and the execution end of the push rod 7 is located between the first material-pickup tooth disk 4 and the second material-pickup tooth disk 11, or between two adjacent second material-pickup tooth disks 11; a support plate 301 is provided on the side wall of each second material-dividing slide 3 near the outlet end of the material-passing gap 201, and the height of the support plates 301 on multiple second material-dividing slides 3 gradually increases as they move away from the first material-dividing tooth disk 4. Gradually increases; the pushing rod 7 can push the steel pipe 13 on the pushing plate 402 of the second pushing tooth disk 11 in the second material dividing slide 3 onto the support plate 301, and the pushing rod 7 acts on the lateral fluctuation of the steel pipe 13 in the second material dividing slide 3. When the second material dividing slide 3 is equipped with the second pushing tooth disk 11 to drive the steel pipe 13 to rotate, the steel pipe 13 is always overlapped on the pushing plate 402 of the second pushing tooth disk 11, and the pushing rod 7 can push the steel pipe 13 on the pushing plate 402 onto the support plate 301, so that the steel pipe 13 is free from the interference of the second material dividing tooth disk 11, and the stacked multiple steel pipes 13 can be dispersed to prepare for the effective operation of the back-end process.

[0030] The execution end of the lifting plate 8 is located in the zinc melting pot 9, and the other end of the lifting plate 8 is installed with a lifting rod 801, and one end of the lifting rod 801 is provided with a second push rod 802, and the second push rod 802 is installed on the truss 6, and the outer periphery of the lifting rod 801 is slidably connected to the sleeve 803, and the outer periphery of the sleeve 803 is rotatably connected to the truss 6, and a first gear is sleeved on the sleeve 803, and the outer periphery of the first gear is meshed with one side of the first rack 804, and one end of the first rack 804 is installed to the movable end of the third push rod 805, and the third push rod 805 is fixedly installed on the truss 6. The first push rod 701, the second push rod 802 and the third push rod 805 are all prior art The push rod cylinder of the present invention is used, the second push rod 802 is used to push the first rack 804 to move axially, the first rack 804 can drive the first gear to rotate, and the rotating first gear drives the lifting rod 801 and the sliding rod to rotate, and the lifting rod 801 is an L-shaped structure, and the upper side of the execution end of the lifting rod 801 is provided with a groove 806 adapted to the outer contour of the steel pipe 13. When the lifting rod 801 is in a non-working state, the lifting rod 801 is attached to the side wall of the zinc melting pot 9. When the first gear drives the lifting rod 801 and the sliding rod to rotate, the groove 806 faces the outer periphery of the steel pipe 13, so that the lifting rod 801 and the lifting plate 8 can achieve the purpose of driving the pipe end of the steel pipe 13 to move upward.

[0031] A lifting sleeve 807 is set at one end of the lifting rod 801, and the outer diameter of the lifting sleeve 807 is larger than the outer diameter of the lifting rod 801. The lower end of the lifting sleeve 807 abuts against one end of the push rod 808, and the other end of the push rod 808 is connected to the movable end of the second push rod 802, and the second push rod 802 and the lifting rod 801 are arranged parallel to each other. The lifting sleeve 807 can always abut against the lower end of the push rod 808 without interfering with the rotation of the lifting rod 801, and the outer contour of the lifting rod 801 is a polygonal structure to prevent the lifting rod 801 and the sleeve 803 from rotating relative to each other. The lifting sleeve 807 can be driven to slide in the sleeve 803 by the second push rod 802, so as to achieve the purpose of driving the pipe end of the steel pipe 13 to move upward by the lifting rod 801 and the lifting plate 8. A pressing device 12 is installed on the truss 6, and the pressing device 12 includes a linkage shaft 121, and one end of the linkage shaft 121 is fixedly installed to the output end of the driving motor, and the driving motor is installed on the truss 6. A plurality of second gears 122 are axially arranged on the linkage shaft 121, and a second rack is meshed on the periphery of each second gear 122, and the second rack is fixedly installed on one side of a pressing rod 123, and the periphery of the pressing rod 123 is slidably connected to the truss 6, and a transverse pressure plate 124 is arranged at the lower end of the pressing rod 123, and the periphery of the transverse pressure plate 124 can abut against the periphery of the steel pipe 13. The pressing device 12 can press down the steel pipe 13 through the transverse pressure plate 124, and a plurality of pressing devices 12 can be arranged along the axial direction of the steel pipe 13. The above device solves the defect of leaking galvanizing due to the thin wall of the square and rectangular steel pipes 13, the light weight of a single pipe, and easy floating in the zinc liquid; at the same time, it avoids the defect of pipe blocking and bending caused by floating in the zinc liquid due to the light weight, and causes the waste problem.

[0032] A stepping mechanism 1 is arranged outside the zinc molten pot 9. The stepping structure is a prior art. The stepping mechanism 1 is used to put the steel pipe 13 to be produced into the zinc molten pot 9. The stepping mechanism 1 includes a fixed seat 101. A plurality of fixed receiving plates are arranged on the fixed seat 101. The plurality of fixed receiving plates are arranged parallel to each other and vertically arranged along the traveling direction of the steel pipe 13 to be produced. A plurality of swing receiving plates 102 are arranged on the fixed seat 101. The swing receiving plates 102 are arranged parallel to each other with the fixed receiving plates. Each swing receiving plate 102 is equipped with two swing arms 103, and the two swing arms 103 are arranged parallel to each other. One end of each swing arm 103 is rotatably connected to the lower end of the swing receiving plate 102, and the middle part of each swing arm 103 is fixedly sleeved on the swing shaft 104, and each swing shaft 104 is rotatably sleeved on the fixed seat 101. Each swing shaft 104 can be synchronously rotated by a swing motor, and the upper ends of the fixed receiving plate and the swing receiving plate 102 are evenly distributed with receiving grooves 105 along the traveling direction of the steel pipe 13 to be produced.

[0033] The surfaces of the first distribution chute 2 and the second distribution chute 3 are respectively subjected to boronizing and rare earth element heat treatment, and the special heat treatment boronizing + rare earth element technology is used to carry out zinc liquid corrosion resistance treatment on the first distribution chute 2 and the second distribution chute 3 for dividing the square and rectangular steel pipes 13; when the treated first distribution chute 2 and the second distribution chute 3 are hot-dip galvanized, there is no zinc sticking and zinc soil formation on the surface of the chute, which avoids the problem of galvanizing leakage caused by zinc soil sticking and prolongs the service life of the first distribution chute 2 and the second distribution chute 3.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic hot-dip galvanizing device for multiple steel pipes, characterized in that: The invention comprises a first material distribution slideway (2), a first material distribution toothed disc (4), a central axis (5), a truss (6) and a lifting plate (8), wherein the first material distribution toothed disc (4) is sleeved on the periphery of the central axis (5), and the central axis (5) is rotatably sleeved into a zinc melting pot (9) through the truss (6), and the truss (6) is installed on the zinc melting pot (9), a first material distribution slideway (2) is arranged on one side of the first material distribution toothed disc (4), and a plurality of material transfer gaps (201) are arranged in sequence from the inside to the outside of the first material distribution slideway (2), each material transfer gap (201) is used to guide a steel pipe (13) to be produced, and the inlet end and the outlet end of the material transfer gap (201) are both located outside the zinc melting pot (9), a lifting plate (8) is arranged on the truss (6), an execution end of the lifting plate (8) is located in the zinc melting pot (9), and the execution end of the lifting plate (8) can abut against the periphery of each steel pipe (13) and lift the steel pipe (13), The lifted end of the steel pipe (13) faces the V-shaped magnetic roller (10), and the V-shaped magnetic roller (10) is used to guide the steel pipe (13) out of the molten zinc pot (9), and the outlet end of each material transfer gap (201) corresponds to a magnetic suction roller of the V-shaped magnetic roller (10).

2. The automatic hot-dip galvanizing device for multiple steel pipes according to claim 1, characterized in that: A first material-dividing toothed disc (4) and a plurality of second material-dividing toothed discs (11) are axially arranged on the central shaft (5); a first material-dividing slideway (2) is arranged on one side of the first material-dividing toothed disc (4); a second material-dividing slideway (3) is arranged on one side of each second material-dividing toothed disc (11); the first material-dividing toothed disc (4) and the second material-dividing toothed disc (11) have the same structure; the first material-dividing toothed disc (4) comprises a fixed sleeve (401), the fixed sleeve (401) is fixedly sleeved to the periphery of the central shaft (5), and a plurality of diverter plates (402) are evenly distributed circumferentially around the periphery of the fixed sleeve (401).

3. The automatic hot-dip galvanizing device for multiple steel pipes according to claim 2, characterized in that: The cross section of the second material distribution slideway (3) is a U-shaped structure, and each second material distribution slideway (3) is fixedly mounted on the zinc melting pot (9) or the truss (6); The length of the shifting plate (402) on the first material shifting toothed disc (4) is greater than the length of the shifting plate (402) on each second material shifting toothed disc (11), and the lengths of the shifting plates (402) on the plurality of second material shifting toothed discs (11) decrease as they move away from the first material shifting toothed disc (4); The inner circle bottom of the material transfer gap (201) is lower than the inner circle bottom of each second material distribution slideway (3), and the height of the inner circle bottom of the plurality of second material distribution slideways (3) gradually increases as the distance from the first material distribution toothed disc (4) increases.

4. The automatic hot-dip galvanizing device for multiple steel pipes according to claim 2, characterized in that: A push rod (7) is installed on the truss (6), and the execution end of the push rod (7) is located in the molten zinc pot (9). The push rod (7) is rotatably connected to the truss (6) through a first pin shaft. The other end of the push rod (7) is rotatably connected to the movable end of the first push rod (701). The periphery of the first push rod (701) is installed on the truss (6), and the execution end of the push rod (7) is located between the first material pushing tooth disk (4) and the second material pushing tooth disk (11), or between two adjacent second material pushing tooth disks (11). A support plate (301) is provided on the side wall of each second material distribution slideway (3) near the outlet end of the material transfer gap (201), and the height of the support plates (301) on the plurality of second material distribution slideways (3) gradually increases as the direction moves away from the first material shifting toothed disc (4); The pushing rod (7) can push the steel pipe (13) on the pushing plate (402) of the second pushing toothed disc (11) in the second material dividing slideway (3) onto the support plate (301).

5. The automatic hot-dip galvanizing device for multiple steel pipes according to claim 1, characterized in that: The execution end of the lifting plate (8) is located in the zinc molten pot (9), and a lifting rod (801) is installed at the other end of the lifting plate (8). A second push rod (802) is arranged at one end of the lifting rod (801), and the second push rod (802) is installed on the truss (6). The outer periphery of the lifting rod (801) is slidably connected to the sleeve (803), and the outer periphery of the sleeve (803) is rotatably connected to the truss (6). A first gear is sleeved on the sleeve (803), and the outer periphery of the first gear is meshed with one side of the first rack (804). One end of the first rack (804) is installed to the movable end of the third push rod (805), and the third push rod (805) is fixedly installed on the truss (6).

6. The automatic hot-dip galvanizing device for multiple steel pipes according to claim 5, characterized in that: A lifting sleeve (807) is provided at one end of the lifting rod (801), the outer diameter of the lifting sleeve (807) is larger than the outer diameter of the lifting rod (801), the lower end of the lifting sleeve (807) is abutted against one end of the push rod (808), the other end of the push rod (808) is connected to the movable end of the second push rod (802), and the second push rod (802) and the lifting rod (801) are arranged parallel to each other.

7. The automatic hot-dip galvanizing device for multiple steel pipes according to claim 5, characterized in that: The lifting rod (801) is an L-shaped structure, and a groove (806) adapted to the outer contour of the steel pipe (13) is provided on the upper side of the execution end of the lifting rod (801).

8. The automatic hot-dip galvanizing device for multiple steel pipes according to claim 1, characterized in that: A pressing device (12) is installed on the truss (6), and the pressing device (12) includes a linkage shaft (121), and one end of the linkage shaft (121) is fixedly installed to the output end of the driving motor, and the driving motor is installed on the truss (6). The linkage shaft (121) is axially provided with a plurality of second gears (122), and each second gear (122) is meshed with a second rack on its periphery, and the second rack is fixedly installed on one side of a pressing rod (123), and the periphery of the pressing rod (123) is slidably connected to the truss (6), and a transverse pressing plate (124) is provided at the lower end of the pressing rod (123), and the periphery of the transverse pressing plate (124) can abut against the periphery of the steel pipe (13).

9. The automatic hot-dip galvanizing device for multiple steel pipes according to claim 1, characterized in that: A stepping mechanism (1) is arranged outside the zinc melting pot (9), and is used for putting the steel pipe (13) to be produced into the zinc melting pot (9). The stepping mechanism (1) comprises a fixed seat (101), and a plurality of fixed receiving plates are arranged on the fixed seat (101). The plurality of fixed receiving plates are arranged parallel to each other and vertically arranged along the moving direction of the steel pipe (13) to be produced. The fixed seat (101) is provided with a plurality of swing receiving plates (102), and the swing receiving plates (102) are connected to the fixed receiving plates. The connecting plates are arranged in parallel with each other, each swing receiving plate (102) is equipped with two swing arms (103), the two swing arms (103) are arranged in parallel with each other, one end of each swing arm (103) is rotatably connected to the lower end of the swing receiving plate (102), the middle part of each swing arm (103) is fixedly sleeved on the swing shaft (104), and each swing shaft (104) is rotatably sleeved on the fixed seat (101), and each swing shaft (104) can be synchronously rotated by a swing motor; The upper ends of the fixed receiving plate and the swing receiving plate (102) are evenly distributed with receiving grooves (105) along the traveling direction of the steel pipe (13) to be produced.

10. The automatic hot-dip galvanizing device for multiple steel pipes according to claim 2, characterized in that: The surfaces of the first material distribution chute (2) and the second material distribution chute (3) are subjected to boronization and rare earth element heat treatment respectively.

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