Alloy casting hot-dip galvanizing equipment

Abstract

The invention discloses alloy casting hot-dip galvanizing equipment which comprises a hot-dip tank and a conveying mechanism for conveying a casting subjected to hot-dip galvanizing to a next procedure, and three infiltration mechanisms arranged in an equilateral triangle shape are arranged in the hot-dip tank and above the hot-dip tank. A rotating framework used for controlling the three infiltration mechanisms to maintain a balance state and rotate at a low speed is installed on the rear side of the hot dipping groove, and a discharging mechanism used for enabling castings in one infiltration mechanism to be transferred to the conveying mechanism from the inside when two infiltration mechanisms are in the equal-height state is installed on the conveying mechanism. The three infiltration mechanisms are used for sequentially putting castings, driving the castings into the hot dipping tank and transferring the galvanized castings, the overall galvanizing efficiency of the castings in multiple batches is effectively improved, meanwhile, when the infiltration mechanisms ascend from the hot dipping tank, the brought-out redundant zinc liquid can flow back into the hot dipping tank in a concentrated mode, and the galvanizing efficiency is effectively improved. Therefore, pollution to the surrounding environment of the equipment is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hot-dip galvanizing equipment, in particular to hot-dip galvanizing equipment for alloy castings. Background Art

[0002] In order to effectively improve the corrosion resistance and service life of alloy castings, it is generally necessary to galvanize them during the production process of alloy castings to form a zinc coating on the outer surface. Common hot-dip galvanizing equipment mainly includes a tank for containing molten zinc, a heating furnace for heating the zinc in the tank to a molten state, a conveying system for feeding the castings into the tank and taking them out of the tank, and a cooling system.

[0003] At present, in order to improve the efficiency of galvanizing castings, multiple castings are usually placed together inside a mesh frame, and then the mesh frame is placed in a tank filled with molten zinc. The mesh frame is then taken out of the tank to take out the castings with it. However, during this process, as the mesh frame drills out of the zinc liquid from bottom to top, a large amount of excess zinc liquid will be carried in the mesh frame, and the zinc liquid dripping down will collide with the original zinc liquid in the tank, which can easily cause large-scale splashing, and even cause environmental pollution around the equipment. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a hot-dip galvanizing equipment for alloy castings to solve the problem proposed in the above background technology that when the structure containing the castings is taken out of the tank body filled with molten zinc, the excess zinc liquid drips down and easily causes large-scale splashing.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an alloy casting hot-dip galvanizing equipment, comprising a hot-dip tank and a conveying mechanism for transferring the castings that have been hot-dip galvanized to the next process, wherein three infiltration mechanisms arranged in an equilateral triangle are arranged inside and above the hot-dip tank, a rotating structure for controlling the three infiltration mechanisms to maintain a balanced state and rotate at a low speed is installed on the rear side of the hot-dip tank, and a discharge mechanism is installed on the conveying mechanism for transferring the casting inside one of the infiltration mechanisms from the inside to the conveying mechanism when two of the infiltration mechanisms are at the same height;

[0006] The infiltration mechanism includes a balancing hanger rotatably mounted on a rotating frame, a screen frame for placing castings for infiltration is installed at the bottom of the balancing hanger, and a conduit component is installed at the bottom of the screen frame for gradually increasing the length and concentrating the zinc liquid in the screen frame to flow into the hot dipping tank when the infiltration mechanism rotates upward from the hot dipping tank.

[0007] Preferably, the conduit assembly includes a shrinkage frame installed on the four edges of the bottom of the screen frame, and the shrinkage frame is wide at the top and narrow at the bottom. A vertical conduit is installed at the bottom of the shrinkage frame, and an extension tube is sleeved on the outer surface of the vertical conduit.

[0008] Preferably, a raised plate is installed on the outer surface of the extension tube, and a tension spring is installed between the raised plate and the contraction frame.

[0009] Preferably, a plurality of spacers are installed on the bottom wall of the screen frame, the cross section of the spacers is a right triangle, and the angle of the right triangle away from the end of the conveying mechanism is not greater than 30°;

[0010] The bottom wall of the screen frame is inclined at an angle of 10°-20°.

[0011] Preferably, the rotating structure includes an upright steel plate arranged on the rear side of the hot dip tank, a three-arm circular shaft connector is rotatably plugged into the front side of the upright steel plate, a positioning shaft rotatably connected to the balancing hanger is installed on the front side of the three-arm circular shaft connector, and a stepper motor transmission-connected to the three-arm circular shaft connector is installed on the back side of the upright steel plate.

[0012] Preferably, the discharge mechanism includes a multi-section hydraulic cylinder installed on the conveying mechanism, and a lifting assembly is installed at the free end of the multi-section hydraulic cylinder for providing support for the infiltration mechanism with the completed hot-dip galvanized casting when two of the infiltration mechanisms are at the same height. A pushing assembly is installed on the lifting assembly for pushing the hot-dip galvanized casting inside the mesh frame from the inside to the outside onto the conveying mechanism when the multi-section hydraulic cylinder is running.

[0013] Preferably, the lifting assembly includes a bottom support plate installed at the free end of the multi-section hydraulic cylinder and adapted to the inclination of the bottom of the contraction frame, a vertical plate is installed on the bottom support plate, a transverse rod with a length adapted to the internal length of the mesh frame is installed on one side of the top of the vertical plate, two connecting rods with a spacing less than the width of the mesh frame are arranged between the two transverse rods, and one end of the connecting rod is fixedly connected to one side of the pushing assembly, and an integral plate is connected to the end of the transverse rod and the connecting rod away from the pushing assembly.

[0014] Preferably, the pushing assembly comprises an upper push plate mounted at one end of the connecting rod, a lower push plate is arranged on one side of the upper push plate, and a cylinder for controlling the height position of the lower push plate is installed on the other side of the upper push plate;

[0015] A plurality of grooves are provided at the bottom of the push-down plate, and telescopic springs are connected to the top walls of the grooves. An L-shaped extension plate is installed at the bottom of the plurality of telescopic springs.

[0016] By means of the above technical solution, the present invention provides a hot-dip galvanizing equipment for alloy castings, which has at least the following beneficial effects:

[0017] 1. In the present invention, when the infiltration mechanism originally immersed in the hot dipping tank is gradually lifted up and taken out by running the rotating structure, the extrusion force applied to the conduit assembly by the bottom wall of the hot dipping tank is gradually cancelled, so that the stretching spring is restored to its original state, and at the same time, the combined length of the vertical conduit and the extension tube is gradually increased. When the infiltration mechanism rises to a position higher than the set position of the transmission mechanism, the bottom of the extension tube is at the same height as the top surface of the zinc liquid in the hot dipping tank, thereby ensuring that in the process, the excess zinc liquid taken out of the screen frame can be concentrated in the conduit assembly and flow back into the hot dipping tank without splashing, ensuring that the refluxed zinc liquid is not contaminated, and avoiding pollution to the surrounding environment of the equipment.

[0018] 2. The present invention controls the three infiltration mechanisms to rotate 120° at a time through a rotating structure. When one of the infiltration mechanisms is immersed in the hot dip tank for galvanizing, the other two infiltration mechanisms can be fed and taken out respectively, thereby effectively improving the overall galvanizing efficiency of multiple batches of castings.

[0019] 3. The present invention uses a mesh frame to place the casting, and sets the bottom wall of the mesh frame to a slightly inclined state, which can prevent the casting from sliding toward the opening. At the same time, a number of spacer bars are used to effectively limit the casting to a small area to prevent it from sliding significantly.

[0020] 4. The present invention adjusts the pushing assembly to a set position in the mesh frame by operating a multi-section hydraulic cylinder, and then cooperates with the cylinder to move the push plate and the structure below it downward, so that the bottom of the extension plate fits the bottom wall of the mesh frame. On this basis, the multi-section hydraulic cylinder contracts to control the push plate and the extension plate to push the multiple castings inside the mesh frame to the location of the conveying mechanism, and the castings that fall on the conveying mechanism and complete the galvanizing operation are directly transported to the next process, thereby effectively improving the efficiency of taking out and transferring the multiple castings inside the mesh frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the rotating structure of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the infiltration mechanism of the present invention;

[0025] Figure 4 It is a schematic diagram of the disassembled structure of the catheter assembly of the present invention;

[0026] Figure 5 It is a schematic diagram of the plane structure of the screen frame of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the discharging mechanism of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the driving component of the present invention.

[0029] In the figure:

[0030] 1. Hot dip tank; 2. Conveying mechanism;

[0031] 3. Infiltration mechanism; 301. Balance hanger; 302. Net frame; 3021. Spacer bar; 303. Catheter assembly; 3031. Contraction frame; 3032. Vertical duct; 3033. Extension tube; 3034. Raised plate; 3035. Tension spring;

[0032] 4. Rotating structure; 401. Vertical steel plate; 402. Three-arm round shaft connector; 403. Positioning shaft; 404. Stepping motor;

[0033] 5. Discharging mechanism; 501. Multi-section hydraulic cylinder; 502. Lifting assembly; 5021. Bottom supporting plate; 5022. Vertical plate; 5023. Transverse rod; 5024. Connecting rod; 503. Pushing assembly; 5031. Upper push plate; 5032. Lower push plate; 5033. Cylinder; 5034. Groove; 5035. Telescopic spring; 5036. Extension plate. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the 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.

[0035] Embodiment 1

[0036] Please refer to Figure 1-Figure 7This embodiment provides a hot-dip galvanizing device for alloy castings, which can effectively prevent the zinc liquid from dripping down and causing a large-scale splashing when the structure containing the castings is taken out of the hot-dip tank. The casting hot-dip galvanizing equipment comprises a hot-dip tank 1 for installing high-temperature zinc liquid and a conveying mechanism 2 for transferring the castings that have finished hot-dip galvanizing to the next process. Three infiltration mechanisms 3 arranged in an equilateral triangle are arranged inside and above the hot-dip tank 1. A rotating frame 4 for controlling the three infiltration mechanisms 3 to maintain a balanced state and rotate at a low speed is installed on the rear side of the hot-dip tank 1. The infiltration mechanisms 3 and the rotating frame 4 are in a rotating connection state. Therefore, when the rotating frame 4 drives the three infiltration mechanisms 3 to rotate, the infiltration mechanisms 3 produce relative movement at the connection with the rotating frame 4 under the action of their own gravity and the balance setting, so that they always maintain a horizontally arranged balanced state. At the same time, the three infiltration mechanisms 3 are coordinated to cyclically repeat the actions of putting castings, immersing them in the hot-dip tank 1, and taking them out of the hot-dip tank 1. When one of the infiltration mechanisms 3 is immersed in the hot-dip tank 1 for galvanizing, the other two infiltration mechanisms 3 are respectively fed and taken out, thereby effectively improving the overall galvanizing efficiency of multiple batches of castings. The discharge mechanism 5 installed on the conveying mechanism 2 is used to transfer the casting inside one of the infiltration mechanisms 3 from the inside to the conveying mechanism 2 when two of the infiltration mechanisms 3 are at the same height.

[0037] When the infiltration mechanism 3 immersed in the hot dip tank 1 is taken out, the excess zinc liquid taken out from the infiltration mechanism 3 will drip down, causing a large-scale splashing, thereby causing loss and pollution of the zinc liquid. In order to effectively solve this problem. Figure 1-Figure 5As shown, the infiltration mechanism 3 includes a balance hanger 301 rotatably sleeved on the rotating frame 4, a screen frame 302 for placing the casting for infiltration is installed at the bottom of the balance hanger 301, and a conduit assembly 303 is installed at the bottom of the screen frame 302 for gradually increasing the length and making the zinc liquid in the screen frame 302 flow into the hot dipping tank 1 when the infiltration mechanism 3 rotates upward from the hot dipping tank 1. The conduit assembly 303 includes a contraction frame 3031 installed on the four edges of the bottom of the screen frame 302, and the contraction frame 3031 is wide at the top and narrow at the bottom. A vertical conduit 3032 is installed at the bottom of the contraction frame 3031, and an extension pipe 3033 is sleeved on the outer surface of the vertical conduit 3032. A protruding plate 3034 is installed on the outer surface of the extension pipe 3033, and a tension spring 3035 is installed between the protruding plate 3034 and the contraction frame 3031. When one of the infiltration mechanisms 3 is in the middle of the hot dipping tank 1, the conduit assembly 303 therein is in a contracted state. In addition, when the rotating structure 4 is operated to bring out the infiltration mechanism 3 originally immersed in the hot dip tank 1, as the height position of the infiltration mechanism 3 gradually rises, the squeezing force applied to the conduit assembly 303 by the bottom wall of the hot dip tank 1 is gradually cancelled, causing the combined length of the vertical conduit 3032 and the extension tube 3033 in the conduit assembly 303 to gradually extend under the elasticity and reset property of the tension spring 3035 and the resistance provided by the zinc liquid in the hot dip tank 1, so that the infiltration mechanism 3 rises to the set height position, wherein the bottom of the extension tube 3033 is at the same height as the top surface of the zinc liquid in the hot dip tank 1, thereby ensuring that during this process, the excess zinc liquid brought out of the screen frame 302 can be concentrated in the conduit assembly 303 and refluxed into the hot dip tank 1 without splashing, thereby ensuring that the refluxed zinc liquid is not contaminated and avoiding pollution to the surrounding environment of the equipment.

[0038] Specifically, the rotating structure 4 includes an upright steel plate 401 disposed at the rear side of the hot dip tank 1, a three-arm circular shaft connector 402 is rotatably plugged on the front side of the upright steel plate 401, a positioning shaft 403 rotatably connected to the balance hanger 301 is installed on the front side of the three-arm circular shaft connector 402, and a stepper motor 404 is installed on the back side of the upright steel plate 401. The stepper motor 404 is used as a driving source for driving the three-arm circular shaft connector 402 to rotate. By running the stepper motor 404 according to the set program, the three-arm circular shaft connector 402 is controlled to rotate 120° at a low speed, and the three immersion mechanisms 3 can be driven to follow the middle of the three-arm circular shaft connector 402 as the center through the three positioning shafts 403, and perform axial rotation while maintaining a balanced state.

[0039] Embodiment 2

[0040] After the casting is placed flat on the bottom wall of the screen frame 302, as the screen frame 302 sinks downward into the hot dip tank 1, the screen frame 302 will shake slightly at the moment when the zinc liquid in the hot dip tank 1 contacts the screen frame 302, causing the casting inside the screen frame 302 to slide, and it is easy to slide outward from the opening of the screen frame 302 on the side where the conveying mechanism 2 is located to the inside of the hot dip tank 1, so that it cannot be taken out of the hot dip tank 1 as the screen frame 302 rotates and rises. In order to effectively avoid this situation, this embodiment proposes another solution for the bottom wall state of the screen frame 302 based on the first embodiment. Figure 1 , Figure 3 and Figure 5 As shown, the bottom wall of the mesh frame 302 is arranged to be inclined at 10°-20°, and a plurality of spacer bars 3021 are installed on the bottom wall of the mesh frame 302. The mesh frame 302 with a slightly inclined bottom wall can make the casting placed therein slide toward the side away from the opening, thereby effectively preventing the casting in the mesh frame 302 from sliding out. In addition, the plurality of spacer bars 3021 added on the bottom wall of the mesh frame 302 are used to effectively restrict the casting between two adjacent spacer bars 3021, thereby preventing it from sliding over a large range.

[0041] Specifically, the cross section of the spacer bar 3021 is a right triangle, and the angle of the right triangle away from the end of the conveying mechanism 2 is not greater than 30 degrees. The spacer bar 3021 with a relatively gentle top surface inclination can prevent the casting from sliding on the bottom wall of the screen frame 302 without reason, and can effectively avoid causing a large obstacle to the casting moving to the conveying mechanism 2 when the discharge mechanism 5 is running and gradually applies a driving force from the end of the screen frame 302 farthest from the conveying mechanism 2 to one side.

[0042] Embodiment 3

[0043] When hot-dip galvanizing is performed on a casting, it needs to go through three steps: placing the casting, immersing the casting in the hot-dip tank 1 for galvanizing, and taking the casting out. Among them, the casting is generally taken out and transferred by a hook or an automatic clamp. However, in the first embodiment, a plurality of castings to be galvanized are usually placed inside the mesh frame 302. When the automatic clamp is used for clamping, in order to ensure the accuracy and stability of the clamping, one casting is generally clamped at a time. Therefore, for the removal of a large number of castings inside the mesh frame 302, the overall efficiency is not good. Figure 1 , Figure 6-Figure 7As shown, in order to effectively improve the efficiency of discharging the multiple castings inside the mesh frame 302. The discharging mechanism 5 includes a multi-section hydraulic cylinder 501 installed on the conveying mechanism 2, and a lifting assembly 502 is installed at the free end of the multi-section hydraulic cylinder 501 for providing support for the infiltration mechanism 3 with the hot-dip galvanized casting when two of the infiltration mechanisms 3 are in the same height state, and a pushing assembly 503 is installed on the lifting assembly 502 to push the hot-dip galvanized casting inside the mesh frame 302 from the inside to the outside to the conveying mechanism 2 when the multi-section hydraulic cylinder 501 is running. When the mesh frame 302 with the hot-dip galvanized casting is adjusted to a set height position, one end of the conveying mechanism 2 and the outlet end of the mesh frame 302 are in the same vertical plane, so that the castings discharged from the inside of the mesh frame 302 can fall onto the conveying mechanism 2 more securely. On this basis, by running the multi-section hydraulic cylinder 501, the lifting component 502 and the pushing component 503 are adjusted to the side of the mesh frame 302 away from the conveying mechanism 2, and then through the contraction operation of the multi-section hydraulic cylinder 501 and the coordinated operation of the pushing component 503, the large-volume castings inside the mesh frame 302 can be pushed to the conveying mechanism 2, and the castings that have fallen on the conveying mechanism 2 and completed the galvanizing operation are directly transported to the next process, thereby effectively improving the efficiency of removing and transferring the large-volume castings inside the mesh frame 302, while simplifying the operating steps and reducing additional equipment intervention.

[0044] Specifically, the lifting assembly 502 includes a bottom support plate 5021 installed at the free end of the multi-section hydraulic cylinder 501 and adapted to the bottom inclination of the contraction frame 3031, a vertical plate 5022 is installed on the bottom support plate 5021, and a transverse rod 5023 with a length adapted to the inner length of the net frame 302 is installed on one side of the top of the vertical plate 5022. Two connecting rods 5024 with a spacing smaller than the width of the net frame 302 are arranged between the two transverse rods 5023, and one end of the connecting rod 5024 is fixedly connected to one side of the pushing assembly 503, and the transverse rod 5023 and the connecting rod 5024 are fixedly connected to one side of the pushing assembly 503. An integrated plate is connected to one end of the rod 5024 away from the pushing component 503, and the pushing component 503 includes an upper push plate 5031 installed at one end of the connecting rod 5024, a lower push plate 5032 is arranged on one side of the upper push plate 5031, and a cylinder 5033 for controlling the height position of the lower push plate 5032 is installed on the other side of the upper push plate 5031, and a plurality of grooves 5034 are opened at the bottom of the lower push plate 5032, and telescopic springs 5035 are connected to the top walls of the grooves 5034, and an L-shaped extension plate 5036 is installed at the bottom of the plurality of telescopic springs 5035. The transverse rod 5023 is located outside the balance hanger 301 and the screen frame 302, and the two connecting rods 5024 are located inside the space between the balance hanger 301 and the screen frame 302. Therefore, when the multi-section hydraulic cylinder 501 is operated to control the bottom support plate 5021 to slide along the bottom wall of the contraction frame 3031, the push assembly 503 can be controlled to move to a corresponding position in the space above the screen frame 302 through the whole body composed of the vertical plate 5022, the transverse rod 5023, the connecting rod 5024 and the integrated plate. After the multi-section hydraulic cylinder 501 is pushed outward by a set amount, the cylinder 5033 is pushed downward, causing the push plate 5032 and the structure below it to move downward together, so that the bottom of the extension plate 5036 is attached to the bottom wall of the screen frame 302, and then when the multi-section hydraulic cylinder 501 is contracted inward, a driving force is generated on the castings on the bottom wall of the screen frame 302 toward the location of the conveying mechanism 2. Among them, since the telescopic spring 5035 itself has elasticity and reset function, as the multi-section hydraulic cylinder 501 contracts, the overall height of the pushing assembly 503 can change accordingly with the fluctuation of the bottom wall of the screen frame 302, so that it is more suitable for the screen frame 302 with a slightly inclined bottom wall and a spacer bar 3021 in the second embodiment. In addition, by using the bottom support plate 5021 to support the bottom of the contraction frame 3031, the entire infiltration mechanism 3 can be effectively prevented from swinging significantly along the positioning axis 403.

[0045] The working steps of the casting hot dip galvanizing equipment are as follows:

[0046] S1, placing the casting after cleaning and degreasing inside the infiltration mechanism 3 away from the side of the conveying mechanism 2, then starting the stepper motor 404, controlling the three-arm circular shaft connecting machine 402 to drive the three infiltration mechanisms 3 to rotate 120° at a time, and at the same time starting the furnace heating device matched with the hot dip tank 1, so that the temperature of the zinc liquid in the hot dip tank 1 is maintained between 450° and 480°;

[0047] S2, when an infiltration mechanism 3 equipped with a casting is immersed in the zinc liquid in the hot dipping tank 1, the stepping motor 404 is stopped to allow the casting to be immersed in the zinc liquid for a set time to form a zinc coating on the surface, and at the same time, a casting that has not been hot dipped is placed in another infiltration mechanism 3 away from the conveying mechanism 2;

[0048] S3, start the stepper motor 404 again, control the infiltration mechanism 3 with the finished hot dip casting to rotate 120° upward from the lower middle part of the hot dip tank 1, so that the net frame 302 in the infiltration mechanism 3 is adjusted to a position where the bottom is higher than the height of the bottom of the conveying mechanism 2, and then start the air cooling system used in conjunction with the equipment to cool the casting wrapped with zinc liquid, and at the same time, another infiltration mechanism 3 with a new casting is immersed in the hot dip tank 1;

[0049] S4, in step S3, as the infiltration mechanism 3 with the casting is ascending from the hot dip tank 1, the excess zinc liquid in the mesh frame 302 flows down along the conduit assembly 303 and flows back into the hot dip tank 1;

[0050] S5, activate the multi-section hydraulic cylinder 501 in the discharging mechanism 5, control it to push a set amount toward one side, adjust the pushing component 503 to the farthest position in the upper screen frame 302 on the nearby side, and then operate the cylinder 5033, which pushes downward, pushes the push plate 5032 downward, and causes the bottom of the extension plate 5036 to fit the bottom wall of the screen frame 302;

[0051] S6. Subsequently, the multi-section hydraulic cylinder 501 contracts inward, driving the pushing assembly 503 to move along the bottom wall of the mesh frame 302 from one side to the direction of the conveying mechanism 2, pushing the hot-dip galvanized casting on the bottom wall of the mesh frame 302 onto the conveying mechanism 2, and cooperating with the operation of the conveying mechanism 2 to transport it to the next process.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An alloy casting hot-dip galvanizing device, comprising a hot-dip tank (1) and a conveying mechanism (2) for transferring hot-dip galvanized castings to the next process, characterized in that: Three infiltration mechanisms (3) arranged in an equilateral triangle are provided inside and above the hot dipping tank (1); a rotating structure (4) is installed on the rear side of the hot dipping tank (1) for controlling the three infiltration mechanisms (3) to maintain a balanced state and rotate at a low speed; a discharge mechanism (5) is installed on the conveying mechanism (2) for transferring the casting inside one of the infiltration mechanisms (3) from the inside to the conveying mechanism (2) when two of the infiltration mechanisms (3) are at the same height; The infiltration mechanism (3) comprises a balancing hanger (301) rotatably sleeved on a rotating frame (4); a screen frame (302) for placing castings for infiltration is installed at the bottom of the balancing hanger (301); and a conduit assembly (303) is installed at the bottom of the screen frame (302) for gradually increasing its length and concentrating the zinc liquid in the screen frame (302) and flowing into the hot dip tank (1) when the infiltration mechanism (3) rotates upward from the hot dip tank (1).

2. The alloy casting hot-dip galvanizing equipment according to claim 1, characterized in that: The conduit assembly (303) comprises a shrinkage frame (3031) mounted on the four edges of the bottom of the screen frame (302), and the shrinkage frame (3031) is wide at the top and narrow at the bottom. A vertical conduit (3032) is mounted at the bottom of the shrinkage frame (3031), and an extension tube (3033) is sleeved on the outer surface of the vertical conduit (3032).

3. The alloy casting hot-dip galvanizing equipment according to claim 2, characterized in that: A raised plate (3034) is installed on the outer surface of the extension tube (3033), and a tension spring (3035) is installed between the raised plate (3034) and the contraction frame (3031).

4. The hot-dip galvanizing equipment for alloy castings according to claim 3, characterized in that: The bottom wall of the screen frame (302) is provided with a plurality of spacer bars (3021), the cross section of the spacer bars (3021) being a right triangle, and the angle between the right triangle and the end away from the conveying mechanism (2) is not greater than 30°; The bottom wall of the screen frame (302) is inclined at an angle of 10°-20°.

5. The hot-dip galvanizing equipment for alloy castings according to claim 4, characterized in that: The rotating structure (4) comprises an upright steel plate (401) arranged at the rear side of the hot dip tank (1); a three-arm circular shaft connector (402) is rotatably plugged into the front of the upright steel plate (401); a positioning shaft (403) rotatably connected to the balancing hanger (301) is installed on the front of the three-arm circular shaft connector (402); and a stepping motor (404) is installed on the back of the upright steel plate (401) and is transmission-connected to the three-arm circular shaft connector (402).

6. The alloy casting hot-dip galvanizing equipment according to claim 1, characterized in that: The discharge mechanism (5) comprises a multi-section hydraulic cylinder (501) mounted on the conveying mechanism (2); a lifting assembly (502) is mounted on the free end of the multi-section hydraulic cylinder (501) for providing support for the infiltration mechanism (3) with the hot-dip galvanized casting when two of the infiltration mechanisms (3) are at the same height; and a pushing assembly (503) is mounted on the lifting assembly (502) for pushing the hot-dip galvanized casting inside the mesh frame (302) from the inside to the outside toward the conveying mechanism (2) when the multi-section hydraulic cylinder (501) is in operation.

7. The alloy casting hot-dip galvanizing equipment according to claim 6, characterized in that: The lifting assembly (502) includes a bottom supporting plate (5021) installed at the free end of the multi-section hydraulic cylinder (501) and adapted to the inclination of the bottom of the contraction frame (3031); a vertical plate (5022) is installed on the bottom supporting plate (5021); a transverse rod (5023) whose length is adapted to the internal length of the net frame (302) is installed on one side of the top of the vertical plate (5022); two connecting rods (5024) with a spacing smaller than the width of the net frame (302) are arranged between the two transverse rods (5023), and one end of the connecting rod (5024) is fixedly connected to one side of the pushing assembly (503); and an integral plate is connected to the end of the transverse rod (5023) and the connecting rod (5024) away from the pushing assembly (503).

8. The alloy casting hot-dip galvanizing equipment according to claim 7, characterized in that: The pushing assembly (503) includes an upper push plate (5031) installed at one end of the connecting rod (5024), a lower push plate (5032) is provided on one side of the upper push plate (5031), and a cylinder (5033) for controlling the height position of the lower push plate (5032) is installed on the other side of the upper push plate (5031); The bottom of the push-down plate (5032) is provided with a plurality of grooves (5034), the top wall of the grooves (5034) is connected with a telescopic spring (5035), and the bottom of the plurality of telescopic springs (5035) is provided with an L-shaped extension plate (5036).

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