Pretreatment device for casting before galvanization

Abstract

The invention discloses a casting galvanization pretreatment device which comprises a base, a plurality of supporting columns are arranged on the upper end face of the base, two parallel bearing rods are arranged at the upper ends of the supporting columns, sliding rails are arranged on the side edges of the bearing rods, a moving part is arranged below the bearing rods, a cleaning part is arranged below the moving part, and a treatment cavity is formed below the cleaning part. The treatment cavity consists of an acid pickling cavity, a cleaning cavity and a drying cavity side by side; the cleaning part is driven by the moving part to operate in different cavities, acid pickling, water washing and drying of hot galvanizing materials can be completed at a time on the same station, castings do not need to be transferred at different production stations, and the pretreatment efficiency of the castings before galvanizing is improved; through cooperation of mechanical parts, batch treatment of castings can be achieved, compared with manual treatment, the pretreatment efficiency is improved, workers can be prevented from making contact with acid liquor for a long time, and the body health of the workers is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of galvanizing of castings, and in particular relates to a pretreatment device for galvanizing of castings. Background Art

[0002] The principle of hot-dip galvanizing of castings is mainly based on the electrochemical reaction between zinc and steel. When steel products are immersed in molten zinc liquid, the iron atoms on the surface of the steel undergo a replacement reaction with the zinc ions, thereby forming a compact zinc layer on the surface of the steel. This zinc layer can not only effectively isolate the steel from the external environment, but also protect the steel matrix through electrochemical corrosion when the zinc layer is damaged, thereby achieving the purpose of corrosion prevention.

[0003] During the production and processing of castings, the surface of the castings will be stained with various oils or oxidation residues, so pickling pretreatment is required before galvanizing the castings to remove oxides, rust and oil stains on the surface of the castings, ensure the surface is clean, and make the surface of the castings clean and smooth, thereby improving the quality of the galvanized layer of the castings and the adhesion of the galvanized layer to the casting substrate.

[0004] The problem encountered in practice is that the three operations of pickling, water washing and drying during hot-dip galvanizing pretreatment are carried out separately, which leads to cumbersome work processes and heavy workload for operators, which is not conducive to improving the efficiency of hot-dip galvanizing processing of castings. Summary of the invention

[0005] In order to solve the problems existing in the above-mentioned background technology, the present application proposes a pretreatment device for castings before galvanizing, which can complete the pickling, water washing and drying of hot-dip galvanized materials in one go, which is beneficial to improving the pretreatment efficiency of castings before galvanizing.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A casting pretreatment device before galvanizing, comprising a base, a plurality of support columns are set on the upper end surface of the base, two parallel bearing rods are set on the upper ends of the support columns, slide rails are set on the sides of the bearing rods, a moving part is set below the bearing rods, and a cleaning part is set below the moving part;

[0008] A second motor is installed at one end of the bearing rod, and a guide wheel is arranged at the other end of the bearing rod. An annular transmission belt is sleeved between the transmission wheel of the second motor and the guide wheel, and the transmission belt is connected to the fixed plate at the upper end of the moving part;

[0009] The movable part comprises two first side plates, a first motor and a first rotating shaft are arranged between the two first side plates, the first motor is drivingly connected to the first rotating shaft, a pulley is arranged at the upper end of the first side plate, the pulley is slidably connected to the slide rail, a reel is arranged on the first rotating shaft, the reel is connected to one end of the sling, and the other end of the sling is connected to the hanging rod of the cleaning part, second side plates are arranged on both sides of the cleaning part, a hanging rod is arranged at the upper end of the second side plate, a cleaning cage is arranged at the lower end of the second side plate, a movable plate is arranged on the side wall of the cleaning cage, one end of the movable plate is rotatably connected to the side wall of the cleaning cage through a third rotating shaft, and the other end of the movable plate is connected to the side wall of the cleaning cage through a buckle, and leakage holes are opened on the movable plate and the side wall of the cleaning cage;

[0010] A processing chamber is arranged below the cleaning part, and the processing chamber is composed of a pickling chamber, a cleaning chamber, and a drying chamber arranged side by side.

[0011] In one embodiment of the present application, a supporting link is connected to the middle portion of the second side plate, a third motor is installed on the upper portion of the supporting link, a rotating rod is arranged below the third motor, one end of the rotating rod is rotatably connected to the side wall of the second side plate, a first transmission gear and a second transmission gear are arranged on the rotating rod, a transmission wheel of the third motor is transmission-connected to the first transmission gear through a transmission chain, a gear ring is arranged at the end edge of the cleaning cage, the second transmission gear is meshed with the gear ring, and both ends of the cleaning cage are rotationally connected to the second side plates on both sides through a rotating shaft.

[0012] In one embodiment of the present application, a placement groove is provided on the upper end surface of the base.

[0013] In one embodiment of the present application, a heating tube is provided in the pickling chamber.

[0014] In one embodiment of the present application, a ventilation opening is provided on the side wall of the drying chamber, and a fan is installed at the ventilation opening.

[0015] In one embodiment of the present application, the first motor is electrically connected to the timer.

[0016] In one embodiment of the present application, the cleaning chamber and the pickling chamber are respectively connected to the liquid collecting chamber through connecting pipes.

[0017] In one embodiment of the present application, a pad is connected to the lower portion of the first side plate.

[0018] In one embodiment of the present application, an ultrasonic generating device is installed on the inner wall of the cleaning chamber.

[0019] In one embodiment of the present application, a plurality of cross beams are arranged between the two bearing bars.

[0020] In summary, the technical solution proposed in the present application includes the following beneficial technical effects: in the present application, a cleaning cage is immersed in the pickling chamber, and leakage holes are opened on the movable plate and the side wall of the cleaning cage. The acid enters the cleaning cage through the leakage holes and contacts the casting in the cleaning cage. The acid reacts with the rust oxide layer on the surface of the casting, and then dissolves and separates from the casting. A processing chamber is arranged below the cleaning part, and the processing chamber is composed of a pickling chamber, a cleaning chamber, and a drying chamber arranged side by side. A second motor is installed at one end of the load-bearing rod, and a guide wheel is arranged at the other end of the load-bearing rod. An annular transmission belt is sleeved between the transmission wheel of the second motor and the guide wheel, that is, the second motor drives the transmission wheel to rotate, thereby driving the transmission belt to rotate between the guide wheel and the transmission wheel. The transmission belt is connected to the fixed plate at the upper end of the moving part. The movement of the transmission belt can pull the fixed plate to move and thereby drive the moving part The cleaning cage moves, and when the cleaning in the pickling chamber is completed, the first motor is controlled to retract the sling to make the cleaning cage rise, and then the second motor is controlled to drive the transmission belt to pull the moving part to move above the cleaning chamber. The cleaning chamber is filled with cleaning liquid to further ensure that the acid on the surface of the casting is cleaned and neutralized. Similarly, after the cleaning in the cleaning chamber is completed, the cleaning cage is transferred to the drying chamber through the moving part for standing and drying. The pickling, water washing and drying of hot-dip galvanized materials can be completed at the same station at one time, without the need to transfer the castings to different production stations, which is beneficial to improving the pretreatment efficiency of the castings before galvanizing. In addition, batch processing of castings can be realized through the cooperation of mechanical parts, which improves the pretreatment efficiency compared with manual processing, and can also avoid long-term contact between workers and acid, thereby ensuring the health of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a casting pretreatment device before galvanizing provided in one embodiment of the present application;

[0023] Figure 2 A schematic diagram of the structure of the moving part and the cleaning part of the pretreatment device for galvanizing castings provided in one embodiment of the present application;

[0024] Figure 3 A schematic diagram of the structure of a bearing rod of a casting pretreatment device before galvanizing provided in one embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of a treatment chamber of a casting pretreatment device before galvanizing provided in one embodiment of the present application;

[0026] In the figure: base 1, support column 11, bearing rod 12, slide rail 121, second motor 122, guide wheel 123, transmission belt 124, crossbeam 125, placement slot 13;

[0027] Moving part 2, fixed plate 21, first side plate 22, pulley 221, pad 222, first motor 23, first rotating shaft 24, reel 241, sling 2411;

[0028] Cleaning part 3, suspension rod 31, second side plate 32, cleaning cage 33, movable plate 331, third rotating shaft 332, buckle 333, gear ring 334, supporting connecting rod 34, third motor 35, rotating rod 351, first transmission gear 3511, second transmission gear 3512;

[0029] Processing chamber-4, pickling chamber-41, heating tube-411, cleaning chamber-42, ultrasonic generator-421, drying chamber-43, ventilation port-431, fan-432;

[0030] Liquid collecting chamber-5, connecting pipe-51. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0032] It should be noted that in the description of the present application, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 a limitation on the present application.

[0033] The terms "installed", "connected" and "connected" in this application 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; 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 this application can be understood by specific circumstances.

[0034] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0035] This embodiment provides a casting pretreatment device before galvanizing, see Figure 1-Figure 4 As shown, it comprises a base 1, a plurality of support columns 11 are set on the upper end surface of the base 1, two parallel bearing rods 12 are set on the upper ends of the support columns 11, a slide rail 121 is set on the side of the bearing rod 12, a moving part 2 is set below the bearing rod 12, and a cleaning part 3 is set below the moving part 2;

[0036] A second motor 122 is installed at one end of the bearing rod 12, and a guide wheel 123 is provided at the other end of the bearing rod 12. An annular transmission belt 124 is sleeved between the transmission wheel of the second motor 122 and the guide wheel 123, and the transmission belt 124 is connected to the fixed plate 21 at the upper end of the moving part 2;

[0037] The moving part 2 includes two first side plates 22, a first motor 23 and a first rotating shaft 24 are arranged between the two first side plates 22, the first motor 23 is drivingly connected to the first rotating shaft 24, a pulley 221 is arranged at the upper end of the first side plate 22, the pulley 221 is slidingly connected to the slide rail 121, a reel 241 is arranged on the first rotating shaft 24, the reel 241 is connected to one end of a sling 2411, and the other end of the sling 2411 is connected to the suspension rod 3 of the cleaning part 3. 1 is connected, second side plates 32 are arranged on both sides of the cleaning part 3, a suspension rod 31 is arranged on the upper end of the second side plate 32, a cleaning cage 33 is arranged on the lower end of the second side plate 32, a movable plate 331 is arranged on the side wall of the cleaning cage 33, one end of the movable plate 331 is rotatably connected to the side wall of the cleaning cage 33 through a third rotating shaft 332, and the other end of the movable plate 331 is connected to the side wall of the cleaning cage 33 through a buckle 333, and leakage holes are opened on the movable plate 331 and the side wall of the cleaning cage 33;

[0038] A processing chamber 4 is disposed below the cleaning portion 3 , and the processing chamber 4 is composed of a pickling chamber 41 , a cleaning chamber 42 , and a drying chamber 43 arranged side by side.

[0039] In the above embodiment, a base 1 is provided at the bottom end of the processing device, and the base 1 is used to provide stable support for the processing device. A plurality of support columns 11 are provided on the upper end surface of the base 1, and the support columns 11 are used to support two parallel bearing rods 12. The slide rails 121 on the sides of the bearing rods 12 are used to slide with the moving part 2. A cleaning part 3 is provided below the moving part 2, and castings that need to be pre-treated and cleaned are placed in the cleaning part 3.

[0040] Furthermore, the moving part 2 includes two first side panels 22, which are connected by a connecting rod, and a first motor 23 is installed between the two first side panels 22, the first motor 23 is connected to the side of the first side panel 22, the first motor 23 is transmission-connected to the first rotating shaft 24, and reels 241 are provided at both ends of the first rotating shaft 24, the reel 241 is connected to one end of a sling 2411, and the other end of the sling 2411 is connected to the suspension rod 31 of the cleaning part 3, the first motor 23 drives the first rotating shaft 24 to rotate to control the retraction and extension of the sling 2411, and thereby controls the rise and fall of the cleaning part 3 in the vertical direction.

[0041] Furthermore, the cleaning part 3 is provided with a second side plate 32 on both sides, and a suspension rod 31 is provided at the upper end of the second side plate 32. On the one hand, the suspension rod 31 is used to connect the second side plates 32 on both sides of the cleaning part 3 to improve the stability of the side plate connection. On the other hand, the suspension rod 31 is used to connect with the sling 2411 to achieve the up and down movement of the cleaning part 3. A cleaning cage 33 is provided at the lower end of the second side plate 32. A cavity is provided in the cleaning cage 33 for placing the castings that need to be pretreated. In addition, a movable plate 331 is provided on the side wall of the cleaning cage 33. One end of the movable plate 331 is rotatably connected to the side wall of the cleaning cage 33 through a third rotating shaft 332, and the other end of the movable plate 331 is connected to the side wall of the cleaning cage 33 through a buckle 333. The buckle 333 can be a bayonet. Opening the buckle 333 causes one end of the movable plate 331 to rotate around the third rotating shaft 332 toward the outside of the cleaning cage 33, that is, the opening of the cleaning cage 33 is opened, and the casting to be processed is placed in the cleaning cage 33, and the movable plate 331 is rotated back to close the buckle 333, so that the cleaning cage 33 is in a closed state, and then the first motor 23 is controlled to drive the reel 241 to lower the sling 2411, thereby lowering the cleaning cage 33, and a pickling chamber 41 is provided below the cleaning cage 33, and the cleaning cage 33 is immersed in the pickling chamber 41, and leakage holes are provided on the movable plate 331 and the side walls of the cleaning cage 33, and the acid enters the cleaning cage 33 through the leakage holes and contacts the casting in the cleaning cage 33, and the acid, such as hydrochloric acid, reacts with the rust oxide layer on the surface of the casting, and then dissolves and separates from the casting, which can improve the surface finish of the casting and facilitate the subsequent galvanizing treatment of the casting.

[0042] Furthermore, a processing chamber 4 is provided below the cleaning portion 3 , and the processing chamber 4 is composed of a pickling chamber 41 , a cleaning chamber 42 , and a drying chamber 43 arranged side by side. After the casting is pickled, in order to avoid the acid solution remaining on the surface of the casting for a long time and causing corrosion of the metal surface, the pickled casting needs to be further cleaned. A second motor 122 is installed at one end of the load-bearing rod 12, and a guide wheel 123 is provided at the other end of the load-bearing rod 12. An annular transmission belt 124 is sleeved between the transmission wheel of the second motor 122 and the guide wheel 123, that is, the second motor 122 drives the transmission wheel to rotate, thereby driving the transmission belt 124 to rotate between the guide wheel 123 and the transmission wheel. The transmission belt 124 is connected to the fixed plate 21 at the upper end of the moving part 2. The movement of the transmission belt 124 can pull the fixed plate 21 to move and then drive the moving part 2 to move. A slide rail 121 is provided on the side of the load-bearing rod 12, and a pulley 221 is provided at the upper end of the first side plate 22. The pulley 221 is slidably connected to the slide rail 121 to reduce the friction force of the moving part 2 moving on the load-bearing rod 12, which is beneficial to improve the smoothness and stability of the moving part 2 when moving. When the cleaning cage 33 is cleaned in the pickling chamber 41, the first motor 23 is controlled to retract the sling 2411 to make the cleaning cage 33 rise, and then the second motor 122 is controlled to drive the transmission belt 124 to pull the moving part 2 to move above the cleaning chamber 42. The cleaning chamber 42 is filled with a weak alkaline solution, such as sodium carbonate solution, to further ensure that the acid on the surface of the casting is cleaned and neutralized. Similarly, after the cleaning of the cleaning cage 33 in the cleaning chamber 42 is completed, it is transferred to the drying chamber 43 through the moving part 2 to stand and dry. During the standing process, the excess water on the surface of the casting flows out through the leak holes opened on the movable plate 331 and the side wall of the cleaning cage 33, and remains in the drying chamber 43 to prevent it from dripping on the ground and causing the ground to be slippery.

[0043] In summary, the present application can complete the pickling, washing and drying of hot-dip galvanized materials at one time at the same station, without the need to transfer the castings to different production stations, which is beneficial to improving the pretreatment efficiency of the castings before galvanizing. In addition, batch processing of castings can be achieved through the coordination of mechanical parts, which improves the pretreatment efficiency compared to manual processing, and can also avoid long-term contact between workers and acid, thereby ensuring the health of the workers.

[0044] In one embodiment of the present application, refer to Figure 2As shown, a supporting connecting rod 34 is connected to the middle part of the second side plate 32, and a third motor 35 is installed on the upper part of the supporting connecting rod 34. A rotating rod 351 is arranged below the third motor 35, and one end of the rotating rod 351 is rotatably connected to the side wall of the second side plate 32. A first transmission gear 3511 and a second transmission gear 3512 are arranged on the rotating rod 351. The transmission wheel of the third motor 35 is transmission-connected to the first transmission gear 3511 through a transmission chain. A gear ring 334 is arranged on the end edge of the cleaning cage 33, and the second transmission gear 3512 is meshed with the gear ring 334. The two ends of the cleaning cage 33 are rotationally connected to the second side plates 32 on both sides through a rotating shaft.

[0045] In the above embodiment, two supporting links 34 are connected to the middle part of the second side plate 32. On the one hand, the supporting links 34 increase the connection points between the two second side plates 32, thereby improving the stability of the connection between the two second side plates 32. On the other hand, the supporting links 34 are used to install and support the third motor 35, which is beneficial to improving the stability of the installation and operation of the third motor 35. Furthermore, a rotating rod 351 is provided below the third motor 35, and one end of the rotating rod 351 is rotatably connected to the side wall of the second side plate 32, and a first transmission gear 3511 and a second transmission gear 3512 are provided on the rotating rod 351, wherein the transmission wheel of the third motor 35 is transmission-connected to the first transmission gear 3511 through a transmission chain, and the rotation of the transmission wheel of the third motor 35 can drive the first transmission gear 3511 to rotate through the transmission chain, and the rotation of the first transmission gear 3511 drives the rotating rod 351 to rotate and then drives the second transmission gear 3512 to rotate, and a gear ring 334 is provided on the end edge of the cleaning cage 33, and the second transmission gear 3512 is meshed with the gear ring 334, and the two ends of the cleaning cage 33 are rotatably connected to the second side plates 32 on both sides through a rotating shaft, that is, the rotation of the second transmission gear 3512 can drive the cleaning cage 33 to rotate between the two second side plates 32, thereby driving the casting in the cleaning cage 33 to flip. On the one hand, turning the casting can increase the frequency of contact between the casting and the acid solution during pickling. During turning, the bubbles in the pits or bends of the casting can be discharged, which is beneficial to the full contact between the casting and the acid solution and improves the pickling effect of the casting. Similarly, turning the casting during the cleaning process after pickling can also improve the cleaning effect of the casting. On the other hand, when the casting is air-dried, excess water will remain in the bends and grooves of the casting. This water will form steam during the galvanizing process, which may cause uneven galvanizing or holes. Therefore, during the drying process of the casting, the cleaning cage 33 is rotated, and the casting can be turned over in the cleaning cage 33 to dump the water remaining in the bends and grooves of the casting, thereby improving the drying efficiency of the casting, which is beneficial to improving the galvanizing effect of the casting in the later stage.

[0046] In one embodiment of the present application, see Figure 1As shown, a placement groove 13 is provided on the upper end surface of the base 1 .

[0047] In the above embodiment, when it is necessary to place castings in the cleaning cage 33 or to inspect and repair equipment components, the cleaning cage 33 needs to be lowered to the ground. In actual operation, the cleaning cage 33 is prone to cause the gear ring 334 at the end edge of the cleaning cage 33 to touch the ground and the base 1 during the process of being lowered to the ground, causing damage to the gear ring 334. A placement groove 13 is provided on the upper end surface of the base 1, and the cleaning cage 33 can be lowered into the placement groove 13, and the supporting connecting rod 34 is first contacted with the upper end surface of the base 1, and the cleaning cage 33 is suspended in the placement groove 13 to avoid the gear ring 334 from touching the end surface of the base 1 and causing damage to the gear ring 334.

[0048] In one embodiment of the present application, see Figure 4 As shown, a heating tube 411 is provided in the pickling chamber 41 .

[0049] In the above embodiment, the heating tube 411 is used to heat the pickling liquid in the pickling chamber 41 to increase the temperature of the casting during pickling. The increase in temperature can accelerate the chemical reaction between the acid and the oxide layer of the casting, making it easier for the acid to remove impurities such as oxide scale and oil stains on the surface of the casting. In addition, the temperature increase speeds up the reaction speed during pickling, which can shorten the pickling time and thus benefit improve production efficiency.

[0050] In one embodiment of the present application, see Figure 4 As shown, a vent 431 is formed on the side wall of the drying chamber 43 , and a fan 432 is installed at the vent 431 .

[0051] In the above embodiment, the fan 432 installed at the vent 431 can promote the air flow in the drying chamber 43. On the one hand, it can blow out the excess moisture in the drying chamber 43. On the other hand, the operation of the fan 432 can speed up the air flow in the drying chamber 43, thereby accelerating the rapid evaporation of water on the casting, which is beneficial to improving production efficiency.

[0052] In one embodiment of the present application, the first motor 23 is electrically connected to a timer.

[0053] In the above embodiment, the first motor 23 is connected to the timer. When the cleaning cage 33 is placed in the pickling chamber 41 for cleaning, the pickling time needs to be controlled. If the pickling time is too short, the oxides or rust on the metal surface may not be completely removed, affecting the effect of subsequent galvanizing. If the time is too long, the metal surface may be excessively corroded, resulting in the loss of metal materials. There will be errors in manual judgment of time. When the cleaning cage 33 is placed in the pickling chamber 41, the timing is set in the timer. When the set time is up, the timer controls the first motor 23 to run through the controller to lift the cleaning cage 33 out of the pickling chamber 41. The timer and the controller can use a programmable logic controller (PLC) or the like in hardware form, and the first motor 23 can use a servo motor.

[0054] In one embodiment of the present application, see Figure 4 As shown, the cleaning chamber 42 and the pickling chamber 41 are respectively connected to the liquid collecting chamber 5 through connecting pipes 51.

[0055] In the above embodiment, the liquid in the cleaning chamber 42 and the pickling chamber 41 can be discharged into the liquid collecting chamber 5 through the connecting pipe 51 for centralized storage, which is convenient for centralized treatment later and avoids direct discharge of the liquid in the cleaning chamber 42 and the pickling chamber 41 to cause environmental pollution. In addition, a valve is installed on the connecting pipe 51. The height of the liquid collecting chamber 5 is lower than that of the cleaning chamber 42 and the pickling chamber 41. The valve can be opened to discharge the liquid directly. The waste liquid flows into the liquid collecting chamber 5 due to the height difference, which can prevent the waste liquid from flowing back.

[0056] In one embodiment of the present application, see Figure 2 As shown, a pad 222 is connected to the lower portion of the first side plate 22 .

[0057] In the above embodiment, the pad 222 is made of soft materials such as rubber. The upper end of the second side plate 32 of the cleaning part 3 is easy to collide with the lower end of the first side plate 22 when lifted. The pad 222 connected to the lower part of the first side plate 22 plays a buffering role to prevent the first side plate 22 and the second side plate 32 from directly colliding and deforming, causing abnormal operation of the device.

[0058] In one embodiment of the present application, see Figure 4 As shown, an ultrasonic generating device 421 is installed on the inner wall of the cleaning chamber 42 .

[0059] In the above embodiment, the ultrasonic wave generated by the ultrasonic wave generating device 421 is transmitted in the cleaning liquid, so that the cleaning liquid vibrates. The vibrating cleaning liquid impacts and rinses the casting, which is beneficial to improving the cleaning efficiency of the casting.

[0060] In one embodiment of the present application, see Figure 1 As shown, a plurality of cross beams 125 are arranged between the two bearing bars 12 .

[0061] In the above embodiment, the two bearing rods 12 are connected by a plurality of cross beams 125. The cross beams 125 are arranged at the upper end of the bearing rods 12 to avoid interference with the operation of the pulley 221 and the transmission belt 124. The cross beams 125 increase the connection points between the two bearing rods 12, thereby improving the stability of the installation of the bearing rods 12, and further helping to improve the stability of the operation of the processing device.

[0062] In actual use of the present application: a movable plate 331 is provided on the side wall of the cleaning cage 33, one end of the movable plate 331 is rotatably connected to the side wall of the cleaning cage 33 through a third rotating shaft 332, and the other end of the movable plate 331 is connected to the side wall of the cleaning cage 33 through a buckle 333, and the buckle 333 can be a bayonet. Opening the buckle 333 allows one end of the movable plate 331 to rotate around the third rotating shaft 332 toward the outside of the cleaning cage 33, that is, the opening of the cleaning cage 33 is opened, and the casting to be processed is placed in the cleaning cage 33, and the movable plate 331 is rotated back to close the buckle 333, so that the cleaning cage 33 is in a closed state, and then the first motor 23 is controlled to drive the reel 241 to lower the sling 2411, thereby lowering the cleaning cage 33, and a pickling chamber 41 is provided below the cleaning cage 33, and the cleaning cage 33 is immersed in the pickling chamber 41, and leakage holes are provided on the side walls of the movable plate 331 and the cleaning cage 33, and the acid enters the cleaning cage 33 through the leakage holes and contacts the casting in the cleaning cage 33, and the acid, such as hydrochloric acid, reacts with the rust oxide layer on the surface of the casting, and then dissolves and separates from the casting, which can improve the surface finish of the casting. A processing chamber 4 is provided below the cleaning section 3. The processing chamber 4 is composed of a pickling chamber 41, a cleaning chamber 42, and a drying chamber 43 arranged side by side. After the casting is pickled, in order to avoid corrosion of the metal surface caused by the acid solution remaining on the surface of the casting for a long time, the pickled casting needs to be further cleaned. A second motor 122 is installed at one end of the load-bearing rod 12, and a guide wheel 123 is provided at the other end of the load-bearing rod 12. An annular transmission belt 124 is sleeved between the transmission wheel of the second motor 122 and the guide wheel 123, that is, the second motor 122 drives the transmission wheel to rotate, thereby driving the transmission belt 124 to rotate between the guide wheel 123 and the transmission wheel. The transmission belt 124 is connected to the fixed plate 21 at the upper end of the moving part 2. The movement of the transmission belt 124 can pull the fixed plate 21 to move and then drive the moving part 2 to move. A slide rail 121 is provided on the side of the load-bearing rod 12, and a pulley 221 is provided at the upper end of the first side plate 22. The pulley 221 is slidably connected to the slide rail 121 to reduce the friction of the moving part 2 moving on the load-bearing rod 12, which is beneficial to improving the smoothness and stability of the moving part 2 when moving. When the cleaning cage 33 has been cleaned in the pickling chamber 41, the first motor 23 is controlled to retract the sling 2411 to make the cleaning cage 33 rise, and then the second motor 122 is controlled to drive the transmission belt 124 to pull the moving part 2 to move above the cleaning chamber 42. The cleaning chamber 42 is filled with a weak alkaline solution, for example, a sodium carbonate solution, to further ensure that the acid on the surface of the casting is cleaned and neutralized. After the cleaning cage 33 has been cleaned in the cleaning chamber 42, it is transferred to the drying chamber 43 through the moving part 2 to stand and dry.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A casting pretreatment device before galvanizing, characterized in that: The invention comprises a base (1), wherein a plurality of support columns (11) are provided on the upper end surface of the base (1), two parallel bearing rods (12) are provided on the upper ends of the support columns (11), a slide rail (121) is provided on the side of the bearing rod (12), a moving part (2) is provided below the bearing rod (12), and a cleaning part (3) is provided below the moving part (2); A second motor (122) is installed at one end of the bearing rod (12), and a guide wheel (123) is provided at the other end of the bearing rod (12); an annular transmission belt (124) is sleeved between the transmission wheel of the second motor (122) and the guide wheel (123), and the transmission belt (124) is connected to a fixed plate (21) at the upper end of the moving part (2); The moving part (2) comprises two first side plates (22), a first motor (23) and a first rotating shaft (24) are arranged between the two first side plates (22), the first motor (23) is drivingly connected to the first rotating shaft (24), a pulley (221) is arranged at the upper end of the first side plate (22), the pulley (221) is slidingly connected to the slide rail (121), a reel (241) is arranged on the first rotating shaft (24), the reel (241) is connected to one end of a sling (2411), and the other end of the sling (2411) is connected to a suspension rod (3) of the cleaning part (3). 1), the cleaning portion (3) is provided with second side plates (32) on both sides, the upper end of the second side plate (32) is provided with a suspension rod (31), the lower end of the second side plate (32) is provided with a cleaning cage (33), the side wall of the cleaning cage (33) is provided with a movable plate (331), one end of the movable plate (331) is rotatably connected to the side wall of the cleaning cage (33) through a third rotating shaft (332), the other end of the movable plate (331) is connected to the side wall of the cleaning cage (33) through a buckle (333), and leakage holes are provided on the movable plate (331) and the side wall of the cleaning cage (33); A processing chamber (4) is provided below the cleaning portion (3), and the processing chamber (4) is composed of a pickling chamber (41), a cleaning chamber (42), and a drying chamber (43) arranged side by side.

2. The casting pretreatment device before galvanizing according to claim 1 is characterized in that: A supporting connecting rod (34) is connected to the middle of the second side plate (32), a third motor (35) is installed on the upper part of the supporting connecting rod (34), a rotating rod (351) is arranged below the third motor (35), one end of the rotating rod (351) is rotatably connected to the side wall of the second side plate (32), a first transmission gear (3511) and a second transmission gear (3512) are arranged on the rotating rod (351), a transmission wheel of the third motor (35) is transmission-connected to the first transmission gear (3511) through a transmission chain, a gear ring (334) is arranged on the end edge of the cleaning cage (33), the second transmission gear (3512) is meshed with the gear ring (334), and two ends of the cleaning cage (33) are rotationally connected to the second side plates (32) on both sides through a rotating shaft.

3. The casting pretreatment device before galvanizing according to claim 2 is characterized in that: The upper end surface of the base (1) is provided with a placement groove (13).

4. The casting pretreatment device before galvanizing according to claim 1, characterized in that: A heating tube (411) is arranged in the pickling chamber (41).

5. The casting pretreatment device before galvanizing according to claim 1, characterized in that: A vent (431) is provided on the side wall of the drying chamber (43), and a fan (432) is installed at the vent (431).

6. The casting pretreatment device before galvanizing according to claim 1, characterized in that: The first motor (23) is electrically connected to the timer.

7. The casting pretreatment device before galvanizing according to claim 1, characterized in that: The cleaning chamber (42) and the pickling chamber (41) are respectively connected to the liquid collecting chamber (5) via connecting pipes (51).

8. The casting pretreatment device before galvanizing according to claim 1, characterized in that: A pad (222) is connected to the lower portion of the first side plate (22).

9. The casting pretreatment device before galvanizing according to claim 1, characterized in that: An ultrasonic generating device (421) is installed on the inner side wall of the cleaning chamber (42).

10. The casting pretreatment device before galvanizing according to any one of claims 1 to 9, characterized in that: A plurality of cross beams (125) are arranged between the two bearing bars (12).

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