Uniform galvanizing production line for zinc pot

Abstract

The invention provides a zinc pot uniform galvanizing production line, and belongs to the technical field of hot galvanizing zinc pots, the zinc pot uniform galvanizing production line comprises a base table top, a pot body is arranged below the base table top, an upper support is arranged above the pot body, the upper support is fixedly connected with an external integral support structure, and the bottom of the upper support is fixedly connected with a plurality of lower supports; the bottom of the lower support is rotationally connected with a main shaft, and the pressing rod assembly is arranged at the end of the inner side of the pot body and used for enabling a steel pipe to rotate automatically; the slow descending assembly is arranged at the top of the table top of the base, and the slow descending assembly is used for enabling the steel pipe to obliquely descend; the shifting plate assembly is arranged on the inner side of the pot body, and the shifting plate assembly is used for pushing impurities on the surface of the zinc liquid. According to the device, scum floating in key operation areas of the feeding side and the discharging side is continuously swept to and gathered on the liquid level of a non-operation area in the middle of a zinc pot through the shifting plate, so that the liquid level of a path where a steel pipe enters and exits is kept relatively clean, and scum adhesion is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of zinc pot plating, in particular to a zinc pot uniform plating production line. BACKGROUND

[0002] The hot-dip galvanizing zinc pot is the core thermal equipment in the hot-dip galvanizing process, and its main function is to hold and heat the molten zinc liquid, so that the steel workpiece after pretreatment can complete the immersion, alloy reaction and coating formation in it. Modern industrial production mostly uses ceramic zinc pot resistant to zinc liquid corrosion, and is equipped with an electromagnetic induction heating system to realize uniform control of the zinc liquid temperature within a specific range. The design and stable operation of the zinc pot directly affect the quality of the coating.

[0003] However, during the zinc plating process, dross mainly composed of zinc oxide and zinc-iron alloy particles is easily generated on the surface of the zinc liquid in the zinc pot. The generation of these dross is mainly due to two ways: one is the oxidation reaction of the zinc liquid with oxygen in the air; the other is the continuous reaction of the iron on the surface of the workpiece with the zinc liquid to generate intermetallic compounds. When the workpiece is immersed in the zinc liquid, if there is such dross on the liquid surface along the travel path of the workpiece, the dross will adhere to the surface of the workpiece, resulting in rough, granular, and missed plating defects in the coating, which seriously affects the appearance quality and corrosion resistance of the product.

[0004] How to invent a zinc pot uniform plating production line to improve these problems has become a problem to be solved by those skilled in the art. SUMMARY

[0005] In order to make up for the above shortcomings, the present application provides a zinc pot uniform plating production line, which aims to improve the problems mentioned in the above background.

[0006] The present application is implemented as follows: The present application provides a zinc pot uniform plating production line, which comprises a base table, a pot body arranged below the base table, an upper support arranged above the pot body, a fixed connection between the upper support and an external overall support structure, a plurality of lower supports fixedly connected to the bottom of the upper support, a main shaft rotatably connected to the bottom of the lower support, a plurality of circumferentially arranged poking rods fixedly connected to the main shaft, a first material placing rack, an auxiliary rack and a second material placing rack fixedly connected to the inner side wall of the pot body, and a pressure rod assembly arranged at the inner side end of the pot body, the pressure rod assembly being used for self-rotation of the steel pipe; a slow descent assembly arranged at the top of the base table, the slow descent assembly being used for inclined falling of the steel pipe; and a push plate assembly arranged at the inner side of the pot body, the push plate assembly being used for pushing the impurities on the surface of the zinc liquid.

[0007] Preferably, the plurality of circumferentially arranged poking rods are a group, the length direction of the main shaft is provided with a plurality of groups of poking rods, the end of the main shaft close to the first material placing rack is connected with the external transmission assembly through a gear, the first material placing rack and the second material placing rack are arranged at the two ends of the length direction of the pot body, the second material placing rack comprises a first guide rack, a second guide rack and a third guide rack, the first guide rack, the second guide rack and the third guide rack are arranged in the shape of an arc-shaped square pole, and the first guide rack, the second guide rack and the third guide rack are sequentially arranged from top to bottom, the inner side wall of the pot body is fixedly connected with a stabilizing rack, and the stabilizing rack is fixedly connected with the first guide rack, the second guide rack and the third guide rack.

[0008] Preferably, the pressing rod assembly comprises a plurality of first sliding rods slidably connected to the stabilizing rack, the bottom end of the first sliding rod is fixedly connected with a first pressing rod, the first pressing rod has the same curvature as the second guide rack, the bottom of the upper support is fixedly connected with a connecting rod, the bottom of the connecting rod is fixedly connected with a sliding frame, a plurality of second sliding rods are vertically and slidably arranged on the sliding frame, the bottom end of the second sliding rod is fixedly connected with a second pressing rod, the second pressing rod has the same curvature as the second guide rack, the bottom surface of the first pressing rod and the second pressing rod is a low-friction surface, the upper surface of the second guide rack and the third guide rack is provided with an anti-skid pattern, and a steel pipe is arranged between the first guide rack and the second guide rack, between the second guide rack and the third guide rack.

[0009] Preferably, the slow descending assembly comprises a cylinder body fixedly connected to the top of the base table top, a smooth cylindrical channel is arranged in the cylinder body, a push rod is slidably arranged in the cylinder body, the end of the push rod away from the cylinder body is sealed through an oil seal, the end of the push rod located outside the cylinder body is fixedly connected with an inclined surface seat, the inclined surface seat is provided with a first inclined surface and a second inclined surface, the first inclined surface corresponds to the gap position between the second guide rack and the first guide rack, and the second inclined surface corresponds to the gap position between the second guide rack and the third guide rack.

[0010] Preferably, the end of the push rod is fixedly connected with a piston, an oil channel is arranged in the push rod and the piston, one end of the oil channel is arranged at the position close to the side wall of the push rod and the piston, the other end of the oil channel is arranged at the end of the piston away from the push rod, the diameter of the oil channel at the piston is greater than the diameter of the oil channel at the push rod, the side wall of the oil channel is fixedly connected with a first spring, the end of the first spring is fixedly connected with a flow limiting valve, the side wall of the flow limiting valve is fixedly connected with a sliding sleeve, the sliding sleeve is slidably arranged in the oil channel, a plurality of through holes arranged in a grid pattern are formed in the sliding sleeve, a through-flow limiting hole is formed in the flow limiting valve, the inner side end of the cylinder body is fixedly connected with a second spring, the end of the second spring abuts against the piston, and the flow limiting valve blocks the end of the oil channel.

[0011] Preferably, the dial plate assembly comprises a first cam fixedly sleeved on the main shaft, a first reciprocating ring sleeved on the first cam, the first reciprocating ring is arranged in an elliptical shape, the long axis direction of the first reciprocating ring is arranged vertically, the side wall of the first reciprocating ring is fixedly connected with a first reciprocating rod, the bottom of the upper support is fixedly connected with a load-bearing frame, the bottom of the load-bearing frame is fixedly connected with a stabilizing seat, the stabilizing seat is slidably connected with the first reciprocating rod, the bottom of the stabilizing seat is connected with a first stabilizing groove body through a connecting piece, the outer side end of the first reciprocating rod is fixedly connected with a stabilizing rod, the stabilizing rod is rotatably sleeved with a sleeve, the sleeve is fixedly connected with a first dial plate, and the inner side of the first stabilizing groove body is provided with a sliding bar.

[0012] Preferably, the dial plate assembly is multiple sets, two sets of dial rods are arranged between two adjacent dial plate assemblies, a second cam is fixedly sleeved on the main shaft, the protruding ends of the first cam and the second cam are arranged in opposite directions, and the first cam and the second cam belong to the dial plate assemblies in which they are arranged, respectively.

[0013] Preferably, the first stabilizing groove body is arranged in a strip shape, a strip-shaped groove is arranged in the first stabilizing groove body, a plurality of spacing frames are fixedly connected to the bottom of the sleeve on the stabilizing rod, the bottom end of the spacing frame is fixedly connected with the sliding bar, the sliding bar is arranged in a cylindrical shape, the sliding bar is slidably arranged in the first stabilizing groove body, a plurality of spacing grooves are formed in the side wall of the first stabilizing groove body, and the plurality of spacing grooves and the plurality of spacing frames are in one-to-one correspondence in position.

[0014] Preferably, the bottom of the upper support is rotatably connected with a plurality of force amplifiers, the side wall of the force amplifier is rotatably connected with a push spring telescopic rod, the end of the push spring telescopic rod is rotatably connected with the load-bearing frame, the side wall of the first reciprocating ring away from the first reciprocating rod is fixedly connected with a blocking pin, the blocking pin is arranged in a T shape, and the rod part of the blocking pin connected with the first reciprocating ring penetrates the bottom of the force amplifier and is slidably arranged with the force amplifier.

[0015] Preferably, the main components of the dial plate assembly in which the second cam is arranged include a second reciprocating ring, a second reciprocating rod, a second dial plate, and a second stabilizing groove body, and the dial plate assembly in which the second cam is arranged is arranged in the opposite direction of the dial plate assembly in which the first cam is arranged.

[0016] The beneficial effects of the present application are that: the device drives the multiple groups of dial rods on the main shaft to rotate synchronously through the continuous rotation of the main shaft, and pushes the steel pipe to continuously travel along the track. In the process of traveling, the first pressing rod and the second pressing rod of the pressing rod assembly exert vertical pressure on both ends of the steel pipe, and the difference between the friction coefficient of the low-friction coating on the bottom surface and the friction coefficient of the anti-skid pattern on the top surface of the guide frame makes the steel pipe in the process of traveling simultaneously generate autorotation around its own axis. This autorotation movement enables the entire circumferential surface of the steel pipe to be uniformly contacted with the zinc liquid, thereby ensuring the circumferential uniformity of the zinc coating.

[0017] The rotating movement of the same main shaft also drives the first reciprocating rod and the second reciprocating rod to perform reciprocating movement through the first cam and the second cam arranged thereon, and further drives the first driving plate and the second driving plate to perform fan-shaped swinging at the surface of the zinc liquid. The reciprocating swinging action enables the two driving plates to continuously sweep and gather the dross floating in the key operation areas of the feeding side and the discharging side to the liquid surface of the non-operation area in the middle of the zinc pot, so that the liquid surface of the path through which the steel pipe enters and exits is kept relatively clean, and the adhesion of the dross is reduced.

[0018] By arranging the slow descending assembly, when the steel pipe enters, the steel pipe is slowly immersed in the zinc liquid in an inclined posture with one end raised and the other end lowered through the cooperation of the inclined seat and the hydraulic damping mechanism, so that the air in the cavity of the steel pipe can be smoothly discharged, and the internal leakage caused by the formation of an air bag is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and other related drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a three-dimensional structure schematic diagram of a zinc pot uniform galvanizing production line provided by the embodiment of the present application; Figure 2 is a schematic diagram of the internal structure of a zinc pot uniform galvanizing production line provided by the embodiment of the present application; Figure 3 is a schematic diagram of the guide frame structure of a zinc pot uniform galvanizing production line provided by the embodiment of the present application; Figure 4 is a schematic diagram of the position of the pressing rod of a zinc pot uniform galvanizing production line provided by the embodiment of the present application; Figure 5 is a schematic diagram of the inclined seat structure of a zinc pot uniform galvanizing production line provided by the embodiment of the present application; Figure 6 is Figure 5 is an enlarged view of A in FIG. 8; Figure 7 is a schematic diagram of the driving plate assembly structure of a zinc pot uniform galvanizing production line provided by the embodiment of the present application; Figure 8 is a schematic diagram of the reciprocating ring structure of a zinc pot uniform galvanizing production line provided by the embodiment of the present application; Figure 9 is a schematic diagram of the driving plate structure of a zinc pot uniform galvanizing production line provided by the embodiment of the present application; Figure 10It is a force rod structure schematic diagram of a zinc pot uniform zinc plating production line provided by the embodiment of the application. Figure 11 It is a furthest position schematic diagram of slag removal of a push plate assembly of a zinc pot uniform zinc plating production line provided by the embodiment of the application. Figure 12 It is an in-out position schematic diagram of a push plate assembly of a zinc pot uniform zinc plating production line provided by the embodiment of the application.

[0021] In the figure: 1, base table; 2, pot body; 3, upper support; 4, lower support; 5, main shaft; 6, push rod; 7, first material placing rack; 8, auxiliary rack; 9, second material placing rack; 11, first guide rack; 12, second guide rack; 13, third guide rack; 14, stabilizing rack; 15, first sliding rod; 16, first pressing rod; 17, second sliding rod; 18, second pressing rod; 19, steel pipe; 20, spring telescopic rod; 21, connecting rod; 22, sliding rack; 25, cylinder body; 26, inclined surface seat; 27, first inclined surface; 28, second inclined surface; 31, push rod; 32, piston; 33, oil channel; 34, flow limiting valve; 35, sliding sleeve; 36, first spring; 37, flow limiting hole; 38, second spring; 41, first cam; 42, second cam; 43, first reciprocating ring; 44, first reciprocating rod; 45, load bearing rack; 46, stabilizing seat; 47, first stabilizing groove; 48, stabilizing rod; 49, first push plate; 50, sliding bar; 51, spacing rack; 52, spacing groove; 55, force rod; 56, push spring telescopic rod; 57, blocking pin; 61, second reciprocating ring; 62, second reciprocating rod; 63, second push plate; 64, second stabilizing groove. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0023] Embodiment, with reference to Figures 1-2The utility model provides a zinc pot uniform galvanizing production line, including base mesa 1, the lower part of base mesa 1 is provided with pot body 2, the upper part of pot body 2 is provided with upper support 3, and upper support 3 is fixedly connected with the overall support structure outside, and a plurality of lower supports 4 are fixedly connected to the bottom of upper support 3, and main shaft 5 is rotatably connected to the bottom of lower support 4, a plurality of circumferentially arranged poking rods 6 are fixedly connected to main shaft 5, and the inner side wall of pot body 2 is fixedly connected with first discharging rack 7, auxiliary frame 8 and second discharging rack 9, and further comprising: a compression rod assembly is arranged at the inner side end of pot body 2, and the compression rod assembly is used to make the steel pipe rotate; a slow descent assembly is arranged at the top of base mesa 1, and the slow descent assembly is used to make the steel pipe tilt and fall; and a poking plate assembly is arranged at the inner side of pot body 2, and the poking plate assembly is used to push the impurities on the surface of zinc liquid.

[0024] It should be noted that: base mesa 1 and pot body 2 constitute the main container, and upper support 3, lower support 4 and main shaft 5 constitute the installation base of the rotating poking system. First discharging rack 7 and second discharging rack 9 are fixed at the two ends of the length direction of pot body 2 respectively, and auxiliary frame 8 is located between the two, and the three form a through track in the width direction of the zinc pot together, and the steel pipe 19 will move along the width direction.

[0025] When the device is on standby, the pot body 2 contains molten zinc liquid, the main shaft 5 and the poking rod 6 are stationary, the compression rod assembly is in the standby pressing position under the action of its own weight and the spring, and the inclined surface seat 26 of the slow descent assembly is in the extended standby position under the action of the second spring 38. When starting dynamic work, the external feeding mechanism synchronously sends two steel pipes 19 to the stepped feeding structure on the base mesa 1, and prepares to roll into the channel composed of the first guide frame 11, the second guide frame 12 and the third guide frame 13 of the second discharging rack 9. At this time, the slow descent assembly is first triggered to guide the steel pipe 19 to enter in a specific posture, then the main shaft 5 drives the poking rod 6 to rotate, pushes the steel pipe 19 to move in the width direction, and in this process, the compression rod assembly makes the steel pipe 19 rotate, and at the same time, the poking plate assembly starts periodic swing to perform the deslagging function. The galvanized steel pipe 19 is pushed to the end of the track in the width direction by the poking rod 6, and is removed by the lifting mechanism.

[0026] Reference Figures 2-4, multiple circumferentially arranged poking rods 6 are arranged in a group, the length direction of the main shaft 5 is provided with multiple groups of the poking rods 6, the end of the main shaft 5 close to the first material placing rack 7 is connected with an external transmission assembly through a gear, the first material placing rack 7 and the second material placing rack 9 are arranged at two ends of the length direction of the pot body 2, the second material placing rack 9 comprises a first guide rack 11, a second guide rack 12 and a third guide rack 13, the first guide rack 11, the second guide rack 12 and the third guide rack 13 are arranged in an arc-shaped square bar shape, the first guide rack 11, the second guide rack 12 and the third guide rack 13 are arranged in sequence from top to bottom, the inner side wall of the pot body 2 is fixedly connected with a stabilizing rack 14, the stabilizing rack 14 is fixedly connected with the first guide rack 11, the second guide rack 12 and the third guide rack 13, the main shaft 5 extends along the length direction of the zinc pot, and multiple groups of the poking rods 6 on the main shaft 5 push multiple steel pipes 19 to move synchronously. The stabilizing rack 14 is fixed with the side walls of the first guide rack 11, the second guide rack 12 and the third guide rack 13 through multiple connection rod bodies arranged in a “mountain” shape, so that the stability of the guide racks in the zinc liquid is enhanced.

[0027] The pressing rod assembly comprises multiple first sliding rods 15 slidably connected to the stabilizing rack 14, the bottom end of the first sliding rod 15 is fixedly connected with a first pressing rod 16, the first pressing rod 16 has the same curvature as the second guide rack 12, the bottom of the upper support 3 is fixedly connected with a connecting rod 21, the bottom of the connecting rod 21 is fixedly connected with a sliding rack 22, multiple second sliding rods 17 are vertically and slidably arranged on the sliding rack 22, the bottom end of the second sliding rod 17 is fixedly connected with a second pressing rod 18, the second pressing rod 18 has the same curvature as the second guide rack 12, the bottom surfaces of the first pressing rod 16 and the second pressing rod 18 are low-friction coefficient surfaces, the upper surfaces of the second guide rack 12 and the third guide rack 13 are provided with anti-skid lines, the first guide rack 11 and the second guide rack 12, the second guide rack 12 and the third guide rack 13 are all provided with the steel pipes 19, and the top of the first sliding rod 15 is fixedly connected with a spring telescopic rod 20.

[0028] It should be noted that the bottom of the first pressing rod 16 and the second pressing rod 18 is provided with a high-temperature-resistant and wear-resistant smooth coating (such as a Teflon coating), so that the friction between the first pressing rod 16 and the second pressing rod 18 and the outer wall of the steel pipe 19 is small; and the upper surfaces of the second guide rack 12 and the third guide rack 13, which are contacted by the bottom of the pressed steel pipe 19, are provided with anti-skid lines, so that the friction is increased. When the poking rod 6 pushes the steel pipe 19 to roll in the width direction on the guide rack, because the up-down friction of the pressing rod and the guide rack on the steel pipe is different, the steel pipe 19 rotates around its own axis while sliding. The steel pipe 19 is forced to add a rotating movement around its own axis during the whole process of rolling forward along the track. The rotating movement makes the circumferential outer surface of the steel pipe 19 experience multiple complete changes in direction, so as to ensure that the zinc liquid can cover the whole circumferential surface of the steel pipe 19, which helps to make the finally formed galvanized layer more uniform in the circumferential direction.

[0029] The spring telescopic rod 20 bears the weight of the first sliding rod 15 and the first pressing rod 16, and provides an initial downward pressure, and the maximum length of the spring telescopic rod 20 defines the lowest position of the first pressing rod 16 under the weight. The lowest position is set to be lower than the expected rolling track height of the steel pipe 19 on the second guide frame 12, so that the bottom surface of the first pressing rod 16 can continuously press against the top of the passing steel pipe 19 by the weight, thereby providing stable positive pressure to generate the necessary friction difference. At the same time, the two ends of the first pressing rod 16 are arranged in an arc shape and are raised, and when the end of the steel pipe 19 contacts the arc-shaped end, the vertical component force generated can overcome the slight resistance of the spring telescopic rod 20 and push the first pressing rod 16 and the first sliding rod 15 as a whole to slide upward, thereby leaving a passage for the end of the steel pipe 19 and achieving smooth transition. Similarly, a spring telescopic rod suitable for the weight of the second pressing rod 18 is also connected above the second pressing rod 18 to maintain similar functions.

[0030] Referring to Figures 5-6 The slow descent assembly includes a cylinder body 25 fixedly connected to the top of the base table 1, a smooth cylindrical passage is arranged in the inside of the cylinder body 25, a push rod 31 is slidably arranged in the cylinder body 25, the end of the push rod 31 is sealed by an oil seal with the end of the cylinder body 25, the end of the push rod 31 located outside the cylinder body 25 is fixedly connected with an inclined surface seat 26, the inclined surface seat 26 is provided with a first inclined surface 27 and a second inclined surface 28, the first inclined surface 27 corresponds to the gap position between the second guide frame 12 and the first guide frame 11, and the second inclined surface 28 corresponds to the gap position between the second guide frame 12 and the third guide frame 13.

[0031] The end of the push rod 31 is fixedly connected with a piston 32, an oil channel 33 is arranged in the inside of the push rod 31 and the piston 32, one end of the oil channel 33 is arranged at the position close to the piston 32 from the side wall of the push rod 31, the other end of the oil channel 33 is arranged at the end of the piston 32 away from the push rod 31, the diameter of the oil channel 33 at the piston 32 is larger than the diameter of the oil channel 33 at the push rod 31, the side wall of the oil channel 33 is fixedly connected with a first spring 36, the end of the first spring 36 is fixedly connected with a flow limiting valve 34, the side wall of the flow limiting valve 34 is fixedly connected with a sliding sleeve 35, the sliding sleeve 35 is slidably arranged in the oil channel 33, a plurality of through holes arranged in a grid pattern are arranged on the sliding sleeve 35, a flow limiting hole 37 penetrating through the flow limiting valve 34 is arranged on the flow limiting valve 34, the inside end of the cylinder body 25 is fixedly connected with a second spring 38, the end of the second spring 38 abuts against the piston 32, and the flow limiting valve 34 blocks the end of the oil channel 33.

[0032] It should be noted that when the steel pipe 19 is rolled from the external feeding mechanism, the end thereof located at one end of the second feeding rack 9 first contacts the corresponding inclined surface, the end of the steel pipe 19 contacting the inclined surface seat 26 is blocked, and the other end falls due to the blocking, thereby forming an inclined posture. The inclined posture enables the axis of the internal cavity of the steel pipe 19 to form an angle with the horizontal plane of the zinc liquid in the subsequent slow descent immersion process, so that the lower end of the steel pipe 19 is first immersed in the zinc liquid, the zinc liquid can flow into the pipe along the inclined pipe wall, and the air in the pipe cavity is smoothly discharged from the higher end which has not been immersed in the liquid. This process avoids the problem that a closed air pocket is easily formed at the top of the pipe cavity when the steel pipe 19 is rapidly immersed in the horizontal state, and the air pocket cannot be discharged, thereby ensuring that the internal cavity of the steel pipe 19 can be quickly filled with the zinc liquid.

[0033] The cylinder 25 is filled with hydraulic oil and is divided by the piston 32. Under the action of gravity, the steel pipe 19 slides downward along the corresponding inclined surface of the inclined surface seat 26, drives the push rod 31 to retract into the cylinder 25 by pushing the inclined surface, the volume of the left cavity of the piston 32 is reduced, and the oil pressure is increased. The oil first enters the oil channel 33 through the flow limiting hole 37 at the end of the piston 32 and flows into the right cavity of the piston 32. Due to the small flow area of the flow limiting hole 37, the oil flow is blocked, thereby enabling the piston 32 to move slowly, and achieving the “slow descent” effect of the steel pipe 19 when pushing the inclined surface seat 26. When the steel pipe 19 completely slides off, the external force disappears. At this time, the second spring 38 which is compressed releases the elastic force and pushes the piston 32 to quickly reset. During the resetting process, the oil pressure in the right cavity of the piston 32 is increased, the oil pushes the flow limiting valve 34 to stretch the first spring 36, so that the flow limiting valve 34 leaves the end of the oil channel 33 which is blocked, thereby opening a larger backflow channel. The oil can quickly flow back to the left cavity of the piston 32, so that the push rod 31 and the inclined surface seat 26 quickly reset to the initial extended position, ready to welcome the next steel pipe 19.

[0034] Referring to Figures 7-8 , the dial plate assembly comprises a first cam 41 fixedly sleeved on the main shaft 5, a first reciprocating ring 43 sleeved on the first cam 41, the first reciprocating ring 43 being elliptical and arranged vertically along the long axis direction, a first reciprocating rod 44 fixedly connected to the side wall of the first reciprocating ring 43, a bearing frame 45 fixedly connected to the bottom of the upper support 3, a stabilizing seat 46 fixedly connected to the bottom of the bearing frame 45, the stabilizing seat 46 being slidably connected to the first reciprocating rod 44, a first stabilizing groove body 47 connected to the bottom of the stabilizing seat 46 through a connecting piece, a stabilizing rod 48 fixedly connected to the outer end of the first reciprocating rod 44, a sleeve rotatably sleeved on the stabilizing rod 48, a first dial plate 49 fixedly connected to the sleeve, and a sliding bar 50 arranged on the inner side of the first stabilizing groove body 47.

[0035] It needs to be explained that the first reciprocating rod 44 passes through a fixed stabilizing seat 46, which is rigidly connected with the load-bearing frame 45 and the first stabilizing groove 47, so that the stabilizing seat 46 and the first stabilizing groove 47 are fixed in the horizontal direction. Because the first stabilizing groove 47 is provided with a sliding bar 50 that can slide up and down, the horizontal reciprocating movement of the first reciprocating rod 44, combined with the up-and-down sliding freedom of the sliding bar 50 in the first stabilizing groove 47, jointly determines that the movement track of the end of the first actuating plate 49 is a fan-shaped reciprocating swing.

[0036] The actuating plate assembly is multiple sets, two sets of adjacent actuating rods 6 are provided with two sets of actuating plate assemblies, the main shaft 5 is fixedly provided with a second cam 42, the protruding end of the first cam 41 and the second cam 42 is reversely arranged, and the first cam 41 and the second cam 42 belong to the actuating plate assemblies in which they are respectively located.

[0037] Referring to Figures 9-10 , the first stabilizing groove 47 is in a long strip shape, the first stabilizing groove 47 is provided with a long strip-shaped groove, the bottom of the sleeve on the stabilizing rod 48 is fixedly connected with a plurality of spacing racks 51, the bottom end of the spacing rack 51 is fixedly connected with the sliding bar 50, the sliding bar 50 is in a cylindrical shape, the sliding bar 50 is slidably arranged in the first stabilizing groove 47, a plurality of spacing grooves 52 are formed in the side wall of the first stabilizing groove 47, the plurality of spacing grooves 52 correspond to the plurality of spacing racks 51 one by one, the bottom of the upper support 3 is rotatably connected with a plurality of force rods 55, the side wall of the force rod 55 is rotatably connected with a push spring telescopic rod 56, the end of the push spring telescopic rod 56 is rotatably connected with the load-bearing frame 45, the side wall of the first reciprocating ring 43 away from the first reciprocating rod 44 is fixedly connected with a stop pin 57, the stop pin 57 is in a “T” shape, and the rod part of the stop pin 57 connected with the first reciprocating ring 43 penetrates the bottom of the force rod 55 and is slidably arranged with the force rod 55.

[0038] It needs to be explained that the push spring telescopic rod 56 always applies a pulling force to the force rod 55, and the pulling force makes the bottom of the force rod 55 have a tendency to move in the opposite direction of the reciprocating rod. This design eliminates the transmission gap between the first cam 41 and the first reciprocating ring 43, which ensures that no matter what angle the first cam 41 rotates to, the first reciprocating ring 43 and the first reciprocating rod 44 connected therewith can be stably retracted to a vertical or nearly vertical state under the action of the tension spring force when the first actuating plate 49 is in a non-working position, avoiding its long-term stay in a position that may interfere with feeding. Symmetrically, the actuating plate assembly in which the second cam 42 is located also has a similar force constraint mechanism, which makes the actuating plate tend to move away from the feeding end, thereby jointly ensuring the smoothness of the feeding and discharging paths.

[0039] The main components of the dial assembly where the second cam 42 is located include the second reciprocating ring 61, the second reciprocating rod 62, the second actuating plate 63, and the second stabilizing groove 64. The dial assembly where the second cam 42 is located is arranged in the opposite direction to the dial assembly where the first cam 41 is located.

[0040] It should be noted that during the galvanizing process, the main shaft 5 rotates continuously. The first cam 41 and the second cam 42, fixed to it, rotate accordingly, driving the two sets of lever assemblies to perform reciprocating motions in opposite phases. (See attached...) Figure 11 As shown in the figure, this diagram illustrates the state of the slag agglomeration operation performed by the agitator assembly: When the protrusion of the first cam 41 rotates horizontally to point towards the feed end, i.e., the side of the second discharge rack 9, it pushes the first reciprocating ring 43 and the first reciprocating rod 44 to move to the right to their maximum stroke. At this time, the first agitator plate 49, through the transmission of the stabilizing rod 48 and the spacer 51, swings to its rightmost and lowest position, with its highest point below the zinc liquid surface. Simultaneously, the protrusion of the second cam 42 necessarily points towards the discharge end, i.e., the side of the first discharge rack 7, driving the second reciprocating rod 62 and the second agitator plate 63 to swing to their leftmost and lowest position. At this time, viewed from the length direction of the zinc pot, the first agitator plate 49 and the second agitator plate 63 cover the area above the channel through which the steel pipe 19 passes.

[0041] The function of the actuating plate is to collect scum on the liquid surface. Its movement is a continuous fan-shaped oscillating cycle: taking the first actuating plate 49 as an example, its initial position is nearly vertical, with its top end above the zinc liquid surface. When the protrusion of the first cam 41 pushes the first reciprocating ring 43, it drives the first reciprocating rod 44 to move to the right, causing the first actuating plate 49 to swing and extend from the vertical position to the lower right below the liquid surface until it reaches the lower right limit position. This extension action is part of its working stroke, carrying a small amount of scum along the way to the right. When it starts from the lower right limit position below the liquid surface, it is pulled back by the tension spring mechanism as the first cam 41 rotates, and its movement trajectory is to swing back from below the liquid surface to the upper left. This retraction action is its main scum-pushing stroke, using the plate surface of the actuating plate to push the scum located in the feed side area to the left by a large amount. The movement phase of the second actuating plate 63 is completely opposite. The two components work together, like two opposing scrapers, sweeping the surface of the molten zinc in a reciprocating fan-shaped motion. This continuously drives and gathers the scum, originally scattered in the working areas on the feeding and discharging sides, towards the non-working area in the middle. This keeps the surface of the molten zinc in the critical working area through which the steel pipe 19 enters and exits the zinc pot relatively clean, reducing the possibility of scum adhering to the steel pipe surface and creating conditions for obtaining a smooth coating. The gathered scum is easily collected and removed by the operator periodically. The consumption and replenishment of the molten zinc are carried out according to a mature process.

[0042] As attached Figure 12As shown, the device is in the state of loading and discharging. At this time, the main shaft 5 stops rotating. In the discharging position, one of the push rods 6 remains horizontally, so that the two steel pipes 19 that have completed galvanizing can be pushed out of the end of the track in the horizontal direction, so as to be removed by the subsequent lifting mechanism and processed. At this time, the first push plate 49 and the second push plate 63 are inclined at a certain angle, but this posture is the state of the process of being pulled up in the movement cycle, and the top end is above the surface of the zinc liquid. This "retracted state" ensures that the overall height of the push plate is high, and does not interfere with the space of the horizontal pushing and removing action of the steel pipe 19. At this time, it is a specific loading and discharging period. In addition to the horizontal discharging push rod 6, the included angle between the remaining push rods 6 and the surface of the zinc liquid is greater than the included angle between the horizontal push rod 6 and the surface of the liquid, which does not affect the normal loading and discharging process of the steel pipe.

[0043] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A zinc pot uniform zinc plating production line, comprising a base table (1), a pot body (2) is arranged below the base table (1), an upper support (3) is arranged above the pot body (2), the upper support (3) is fixedly connected with an external overall support structure, a plurality of lower supports (4) are fixedly connected to the bottom of the upper support (3), a main shaft (5) is rotatably connected to the bottom of the lower support (4), a plurality of circumferentially arranged poking rods (6) are fixedly connected to the main shaft (5), a first discharging rack (7), an auxiliary rack (8) and a second discharging rack (9) are fixedly connected to the inner side wall of the pot body (2), characterized in that, Also include: The pressure rod assembly is arranged at the inner side end of the pot body (2), and is used for self-rotating the steel pipe; The slow descent assembly is arranged on the top of the base table (1), and is used for tilting the steel pipe to fall; The push plate assembly is arranged on the inner side of the pot body (2), and is used for pushing the impurities on the surface of the zinc liquid.

2. A zinc pot uniform galvanizing line according to claim 1, characterized in that, A plurality of circumferentially arranged push rods (6) are arranged on the length direction of the main shaft (5), the end of the main shaft (5) close to the first feeding rack (7) is connected with the external transmission assembly through a gear, the first feeding rack (7) and the second feeding rack (9) are arranged at both ends of the length direction of the pot body (2), the second feeding rack (9) comprises a first guide frame (11), a second guide frame (12) and a third guide frame (13), the first guide frame (11), the second guide frame (12) and the third guide frame (13) are arranged in the shape of arc square bar, the first guide frame (11), the second guide frame (12) and the third guide frame (13) are arranged in sequence from top to bottom, and the inner wall of the pot body (2) is fixedly connected with a stabilizing frame (14).

3. A zinc pot galvanizing line according to claim 2, characterized in that, The pressure rod assembly comprises a plurality of first sliding rods (15) slidably connected to the stabilizing frame (14), the bottom end of the first sliding rod (15) is fixedly connected with a first pressure rod (16), the first pressure rod (16) has the same curvature as the second guide frame (12), the bottom of the upper support (3) is fixedly connected with a connecting rod (21), the bottom of the connecting rod (21) is fixedly connected with a sliding frame (22), a plurality of second sliding rods (17) are vertically and slidably arranged on the sliding frame (22), the bottom end of the second sliding rod (17) is fixedly connected with a second pressure rod (18), the second pressure rod (18) has the same curvature as the second guide frame (12), the bottom surface of the first pressure rod (16) and the second pressure rod (18) is a low friction coefficient surface, the upper surfaces of the second guide frame (12) and the third guide frame (13) are provided with anti-skid lines, the first guide frame (11) and the second guide frame (12), the second guide frame (12) and the third guide frame (13) are provided with steel pipes (19), and the top of the first sliding rod (15) is fixedly connected with a spring telescopic rod (20).

4. A zinc pot uniform galvanizing line according to claim 2, characterized in that, The slow descent assembly comprises a cylinder (25) fixedly connected to the top of the base table (1), a smooth cylindrical channel is arranged in the cylinder (25), a push rod (31) is slidably arranged in the cylinder (25), the end of the push rod (31) is sealed with the cylinder (25) through an oil seal, the end of the push rod (31) located outside the cylinder (25) is fixedly connected with an inclined surface seat (26), the inclined surface seat (26) is provided with a first inclined surface (27) and a second inclined surface (28), the first inclined surface (27) corresponds to the gap position between the second guide frame (12) and the first guide frame (11), and the second inclined surface (28) corresponds to the gap position between the second guide frame (12) and the third guide frame (13).

5. A zinc pot galvanizing line according to claim 4, characterized in that, The end of the push rod (31) is fixedly connected with a piston (32), an oil channel (33) is arranged in the push rod (31) and the piston (32), one end of the oil channel (33) is arranged at the position close to the side wall of the push rod (31) and the piston (32), the other end of the oil channel (33) is arranged at the end of the piston (32) away from the push rod (31), the diameter of the oil channel (33) at the piston (32) is greater than the diameter of the oil channel (33) at the push rod (31), the side wall of the oil channel (33) is fixedly connected with a first spring (36), the end of the first spring (36) is fixedly connected with a flow limiting valve (34), the side wall of the flow limiting valve (34) is fixedly connected with a sliding sleeve (35), the sliding sleeve (35) is slidably arranged in the oil channel (33), a plurality of through holes arranged in a grid pattern are formed in the sliding sleeve (35), a flow limiting hole (37) penetrating the flow limiting valve (34) is formed in the flow limiting valve (34), the inner side of the cylinder (25) is fixedly connected with a second spring (38), the end of the second spring (38) abuts against the piston (32), and the flow limiting valve (34) blocks the end of the oil channel (33).

6. A zinc pot uniform galvanizing line according to claim 1, characterized in that, The dial plate assembly comprises a first cam (41) fixedly sleeved on the main shaft (5), a first reciprocating ring (43) is sleeved on the first cam (41), the first reciprocating ring (43) is arranged in an elliptical shape, the long axis direction of the first reciprocating ring (43) is arranged vertically, the side wall of the first reciprocating ring (43) is fixedly connected with a first reciprocating rod (44), the bottom of the upper support (3) is fixedly connected with a bearing frame (45), the bottom of the bearing frame (45) is fixedly connected with a stabilizing seat (46), the stabilizing seat (46) is slidably connected with the first reciprocating rod (44), the bottom of the stabilizing seat (46) is connected with a first stabilizing groove body (47) through a connecting piece, the outer side end of the first reciprocating rod (44) is fixedly connected with a stabilizing rod (48), a sleeve pipe is rotatably sleeved on the stabilizing rod (48), a first dial plate (49) is fixedly connected to the sleeve pipe, and a sliding bar (50) is arranged on the inner side of the first stabilizing groove body (47).

7. A zinc pot galvanizing line according to claim 6, characterized in that, The dial plate assembly is multiple sets, two groups of adjacent dialing rods (6) are provided with two sets of dial plate assembly, the main shaft (5) is fixedly provided with a second cam (42), the protruding end of the first cam (41) and the second cam (42) is reversely arranged, the first cam (41) and the second cam (42) belong to the dial plate assembly of each set.

8. A zinc pot uniform galvanizing line according to claim 6, characterized in that, The first stable groove body (47) is in strip shape, a long strip-shaped groove is arranged in the first stable groove body (47), a plurality of spacing frames (51) are fixedly connected to the bottom of the sleeve of the stable rod (48), the bottom end of the spacing frame (51) is fixedly connected with the sliding bar (50), the sliding bar (50) is in cylindrical shape, the sliding bar (50) is slidably arranged in the first stable groove body (47), a plurality of spacing grooves (52) are formed in the side wall of the first stable groove body (47), and the plurality of spacing grooves (52) and the plurality of spacing frames (51) are one-to-one corresponding.

9. A zinc pot uniform galvanizing line according to claim 6, characterized in that, The bottom of the upper support (3) is rotatably connected with a plurality of force rods (55), the side wall of the force rod (55) is rotatably connected with a push spring telescopic rod (56), the end of the push spring telescopic rod (56) is rotatably connected with the bearing frame (45), the side wall of the first reciprocating ring (43) away from the first reciprocating rod (44) is fixedly connected with a stop pin (57), the stop pin (57) is in "T" shape, the rod part of the stop pin (57) connected with the first reciprocating ring (43) penetrates the bottom of the force rod (55) and is slidably arranged with the force rod (55).

10. A zinc pot uniform galvanizing line according to claim 7, characterized in that, The main components of the dial plate assembly where the second cam (42) is located include a second reciprocating ring (61), a second reciprocating rod (62), a second dialing plate (63) and a second stable groove body (64), and the dial plate assembly where the second cam (42) is located is reversely arranged with the dial plate assembly where the first cam (41) is located.

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