Crane waste gas collecting equipment for anodic oxidation process

Abstract

The invention belongs to the field of waste gas collection and treatment in the surface treatment process, and particularly relates to waste gas collection equipment during crane operation in the anodic oxidation process. The integrated design is adopted, the gas collecting hood can ascend and descend, the state of the part can be observed conveniently, the part can be treated in time, and therefore the surface quality of the part is improved, and repairing of the acid-containing part in the anodic oxidation process is avoided. Waste gas is injected into an exhaust branch pipe through a special-shaped duckbilled pipeline by adopting an independent fan in waste gas collection, is always located in the exhaust branch pipe, and is driven by a travelling crane to walk in the exhaust branch pipe. Compared with the prior art, waste gas generated in the production process can be collected by 100%. The two sides of the liquid receiving tray are horizontally moved to be opened and closed, tank liquid cannot drop to an aisle of a production line, the production line is clean, tidy and odorless, and extra cleaning is not needed. By adopting the liftable gas collecting hood with the liquid receiving tray, 100% collection of waste gas generated in the production process can be realized, and the environment-friendly waste gas collection and emission requirements and occupational health requirements are met.

Description

Technical Field

[0001] The invention belongs to the field of waste gas collection and treatment in a surface treatment process, and particularly relates to waste gas collection equipment during crane operation in an anodic oxidation process. Background Art

[0002] The anodizing process is an electrochemical process that produces an oxide film on the metal surface. This process is widely used to increase the corrosion resistance, hardness, wear resistance and decorative properties of metals, and is particularly suitable for metals such as aluminum, magnesium, titanium and their alloys. There are many types of anodizing processes, including sulfuric acid anodizing, chromic acid anodizing and mixed acid anodizing. Each process has its own unique advantages and scope of application, and can be selected based on factors such as the required surface quality, corrosion resistance, wear resistance and decorative properties. The anodizing process can be widely used in many industries, but as the requirements for environmental and environmental waste gas emissions continue to increase, it is now required to collect and treat waste gas during crane operations. This can further reduce the pollution and harm of waste gas to the environment and operators, and meet environmental protection requirements. Summary of the Invention

[0003] The present invention provides an exhaust gas collection device for anodizing process operation. The device adopts an integrated design and a gas collecting hood with a lifting structure window, which is convenient for observing and processing the status of parts during the oxidation process. The gas is collected at the edge of the gas collecting hood and enters the main pipeline, which can achieve 100% collection of the exhaust gas.

[0004] According to one aspect of the present application, there is provided a crane exhaust gas collection device for anodizing process, which is composed of an openable and closable liquid receiving tray, a gas collecting hood with a lifting window, and an exhaust gas collection device;

[0005] The openable and closable liquid receiving tray is composed of a closing sensor switch 1-1, an opening sensor switch 1-2, a rack 1-3, a roller 1-4, a liquid receiving tray 1-5, a gear 1-6, a reduction motor 1-7, a track 1-8, and a solenoid valve 1-9;

[0006] The gas collecting hood with lifting window is composed of a cylinder Y-type joint 2-1, a telescopic cylinder 2-2, a cylinder mounting seat 2-3, a lifting window 2-4, a rocker 2-5, a rocker shaft 2-6, a nut 2-7, a short shaft 2-8, a bearing base 2-9, a bearing 2-10, a driving handle 2-11, and a gas collecting hood 2-12;

[0007] The exhaust gas collection device is composed of an exhaust hood exhaust pipe 3-1, an exhaust fan 3-2, an exhaust special-shaped duckbill pipe 3-3, an exhaust branch pipe 3-4, a soft sealing strip 3-5, and a supporting plate 3-6.

[0008] The closing sensor switch 1-1 and the opening sensor switch 1-2 are installed on the vertical rigid arm 4-6 of the traveling crane through the mounting bracket, and play the role of detecting the position of the liquid receiving tray 1-5. The closing sensor switch 1-1 is the position of the liquid receiving tray closed, and the opening sensor switch 1-2 is the position of the liquid receiving tray opened;

[0009] There are two reduction motors 1-7, which are mounted on the vertical rigid arms 4-6 of the crane through mounting brackets;

[0010] There are two gears 1-6, which are connected to the reduction motor 1-7 through shafts respectively;

[0011] The rack 1-3 and the liquid receiving tray 1-5 are connected together by welding;

[0012] The roller 1-4 is connected to the rack 1-3 through a shaft;

[0013] There are two rails 1-8, which are welded to the vertical rigid arms 4-6 of the crane respectively;

[0014] The solenoid valve 1-9 is installed at the bottom of the liquid receiving tray 1-5;

[0015] The openable and closable liquid receiving tray is composed of two liquid receiving trays 1-5, which are driven by a motor reducer 1-7 to perform opening and closing control; each liquid receiving tray 1-5 is respectively equipped with four rollers 1-4.

[0016] The cylinder Y-type joint 2-1 is installed on the telescopic cylinder 2-2;

[0017] The telescopic cylinder 2-2 is fixed on the air collecting cover 2-12 through the cylinder mounting seat 2-3.

[0018] There are four swing rods 2-5, one end of which is fixed to the lifting window 2-4 through the swing rod shaft 2-6 and the nut 2-7, and the other end of the swing rod 2-5 is welded to the short shaft 2-8.

[0019] There are four short shafts 2-8, and both ends of each short shaft 2-8 are mounted on bearings 2-10.

[0020] The bearing 2-10 is connected and fastened to the air collecting cover 2-12 through the bearing base 2-9.

[0021] One end of the driving handle 2-11 is connected to the cylinder Y-shaped joint 2-1, and the other end of the driving handle 2-11 is welded to a rocker rod 2-5.

[0022] The exhaust fan 3-2 is installed on the steel structure platform of the driving track column;

[0023] The air collecting hood exhaust pipe 3-1 is installed on the traveling crane 4-4, one end of the air collecting hood exhaust pipe 3-1 is connected to the exhaust special-shaped duckbill pipe 3-3, and the other end of the air collecting hood exhaust pipe 3-1 is connected to the air collecting hood 2-12;

[0024] The end of the exhaust special-shaped duckbill pipe 3-3 is provided with a narrow air duct, which is a duckbill configuration b, with both ends forming an acute angle shape;

[0025] The side of the exhaust branch pipe 3-4 is provided with a narrow opening a that is connected to the pipe, and a support plate 3-6 is installed at the lower part of the narrow opening a;

[0026] The duckbill configuration b of the exhaust special-shaped duckbill pipe 3-3 is inserted into the narrow opening a of the exhaust branch pipe 3-4, and the other end of the exhaust special-shaped duckbill pipe 3-3 is connected to the air collecting hood exhaust pipe 3-1.

[0027] The liquid receiving tray 1-5, the lifting window 2-4, the gas collecting hood 2-12, the gas collecting hood exhaust pipe 3-1, the exhaust special-shaped duckbill pipe 3-3, the exhaust branch pipe 3-4, the soft sealing strip 3-5, and the supporting plate 3-6 are made of PVC material;

[0028] The rack 1-3, roller 1-4, gear 1-6, reduction motor 1-7, track 1-8, cylinder Y-type joint 2-1, telescopic cylinder 2-2, cylinder mounting seat 2-3, rocker arm 2-5, rocker arm shaft 2-6, nut 2-7, short shaft 2-8, bearing base 2-9, bearing 2-10, drive handle 2-11, and exhaust fan 3-2 are made of steel.

[0029] When the crane 4-4 lifts the workpiece 4-2, the workpiece 4-2 is lifted out of the tank liquid, and some tank liquid will be brought out. When the crane 4-4 is raised to the upper position, the two parts of the liquid collecting tray are driven by the motor reducer 1-7 to merge from both sides of the gas collecting hood 2-12. At this time, the liquid collecting tray 1-5 collects some dripping tank liquid. The crane 4-4 drives the gas collecting hood 2-12 and the liquid collecting tray 1-5 to move together. When the crane 4-4 moves to the next tank position, the motor reducer 1-7 is started, driving the liquid collecting tray 1-5 to open horizontally, and the crane 4-4 drives the workpiece 4-2 down into the tank.

[0030] The tank liquid collected in the liquid collecting pan 1-5 opens the solenoid valve 1-9 at the bottom of the liquid collecting pan 1-5 when the crane 4-4 moves to the end of the production line, allowing the collected liquid to flow into a suitable sewage pipe, and then closes the bottom solenoid valve 1-9.

[0031] When the crane 4-4 moves to the position of the water tank 4-1 and needs to lift or put down the workpiece 4-2, the reduction motor 1-7 drives the gear 1-6, and the gear 1-6 drives the rack 1-3 and the liquid receiving tray 1-5 to move horizontally on the track 1-8 through the roller 1-4. The two liquid receiving trays 1-5 move horizontally and open. When the liquid receiving trays 1-5 are detected to be in place by the opening sensor switch 1-2, the reduction motor 1-7 stops rotating, and the two liquid receiving trays 1-5 are opened in place. In this way, the workpiece 4-2 can be lifted by the crane 4-4.

[0032] When the crane 4-4 lifts the workpiece 4-2 into place, the reduction motor 1-7 drives the gear 1-6, and the gear 1-6 drives the rack 1-3 and the liquid receiving tray 1-5 to move horizontally on the track 1-8 through the roller 1-4. The liquid receiving tray 1-5 is closed horizontally. After the liquid receiving tray 1-5 is detected to be in place by the closed induction switch 1-1, the reduction motor 1-7 stops rotating, and the two liquid receiving trays 1-5 are closed into place. The tank liquid brought out of the water tank 4-1 by the workpiece 4-2 drips into the liquid receiving tray 1-5, which prevents the tank liquid brought out of the water tank 4-1 by the workpiece 4-2 from contaminating other equipment and reduces the corrosion of other equipment by the tank liquid.

[0033] When the operator needs to observe the workpiece 4-2 lifted in the traveling crane, the cylinder Y-type joint 2-1 connected to the telescopic cylinder 2-2 extends, and the cylinder Y-type joint 2-1 rotates the driving handle 2-11. Driven by the driving handle 2-11, the four rocker shafts welded to the short shaft 2-8 rotate together, driving the lifting window 2-4 to move vertically upward. The lifting window rises, and the operator observes the condition of the workpiece 4-2 in the traveling crane 4-4.

[0034] When the operator checks that workpiece 4-2 is complete and needs to close window 2-4, the cylinder Y-joint 2-1 connected to telescopic cylinder 2-2 retracts, and cylinder Y-joint 2-1 rotates drive handle 2-11. Driven by drive handle 2-11, the four rocker shafts welded to short shaft 2-8 rotate together, driving window 2-4 to move vertically downward, and the window is lowered and closed. This makes it easier for the operator to observe and adjust the processing status of the part during the anodizing process, thereby improving the quality of the anodized film on the part.

[0035] When the exhaust special-shaped duckbill pipe 3-3 is inserted into the exhaust branch pipe 3-4, the weight of the exhaust special-shaped duckbill pipe 3-3 can be borne by the supporting plate 3-6, ensuring that the exhaust special-shaped duckbill pipe 3-3 can move smoothly in the exhaust branch pipe 3-4. A soft sealing strip 3-5 is installed on the exhaust branch pipe 3-4, which can cover the narrow opening a on the exhaust branch pipe 3-4 that the exhaust special-shaped duckbill pipe 3-3 does not pass through, thereby preventing other gases in the workshop from entering the exhaust branch pipe 3-4. When the traveling crane 4-4 moves horizontally left and right, it drives the exhaust special-shaped duckbill pipe 3-3 to move with the traveling crane 4-4, and the duckbill configuration b on the exhaust special-shaped duckbill pipe 3-3 can easily lift up the soft sealing strip 3-5 covering the opening a on the exhaust branch pipe 3-4;

[0036] When the crane 4-4 is stopped or in motion, the gas in the crane air hood 2-12 is extracted by the exhaust fan 3-2 and discharged into the exhaust gas treatment system through the air hood exhaust pipe 3-1, the exhaust special-shaped duckbill pipe 3-3, and the exhaust branch pipe 3-4. This effectively discharges the corrosive acid and alkaline gases emitted by the workpiece 4-2 in the crane air hood 2-12, ensuring clean air in the workshop.

[0037] The exhaust special-shaped duckbill pipe 3-3 is always in the exhaust branch pipe 3-4 during the movement of the vehicle 4-4, and the gas in the gas collecting hood 2-12 is discharged to the exhaust gas treatment system. The entire exhaust system is in a negative pressure state, and there will be no exhaust gas overflow at the opening a of the exhaust branch pipe 3-4.

[0038] The working process of the above equipment includes the following steps:

[0039] Step 1: Start the exhaust fan. Before the production line starts running, the exhaust fan of the exhaust gas treatment and purification system should be turned on. The fans for the purification treatment of the entire production line include the fans for exhausting air on the side of the trough, the fans for exhausting air from the crane hood, and the main exhaust fan of the system. Among them:

[0040] (1) Turn on the main exhaust fan: Before the anodizing production operation, the main exhaust pipe exhaust fan must be turned on first. The main exhaust duct is formed by the crane air collection hood duct and the tank side exhaust duct. When the fan is turned on, the exhaust gas in the main pipe and the exhaust gas in the branch pipe can be extracted.

[0041] (2) Turn on the exhaust fan on the tank side: Generally, after the preparation work for anodizing production is completed, the exhaust fan on the tank side is turned on. The purpose of setting up a separate exhaust fan on the tank side is to better remove the gas volatilized from the tank liquid. The extracted gas is then collected into the exhaust gas treatment main pipe.

[0042] (3) The exhaust fan of the traveling air collecting hood is turned on: the exhaust gas of the traveling air collecting hood is extracted by the exhaust fan installed on the steel structure platform on the top of the traveling track column, and is collected into the exhaust gas branch pipe of the air collecting hood through the exhaust duckbill pipe. The mouth of the exhaust duckbill pipe is always in the exhaust branch pipe, and moves in the branch pipe as the traveling crane is driven.

[0043] First turn on the fan of the main exhaust pipe, then turn on the fan for side exhaust of the slot, and the exhaust fan of the overhead dust collection hood to ensure that 100% of the exhaust gas generated by the entire production line is collected and treated.

[0044] Step 2: The liquid collection tray opens horizontally to either side of the hood. The tray consists of two parts. These trays are positioned to either side of the hood to prevent the workpiece from hitting the tray when being lifted from the tank or lowered from a high position. Before machining begins, the crane moves the tray to either side of the hood, driving the workpiece. When the crane reaches the designated tank position, the tank cover opens, the workpiece is lowered into the tank, and the cover closes.

[0045] Step 3: The liquid collection tray receives the tank liquid. After the required process time is reached, the tank cover opens and the crane lifts the workpiece. Once the crane has raised the workpiece to a high position, the two liquid collection trays, driven by a motor reducer, merge horizontally from either side of the gas hood. The liquid collection trays then collect any dripping liquid from the workpiece. The crane then drives the gas hood and liquid collection tray together to the next tank position. During this movement, the liquid collection tray remains directly below the gas hood, collecting liquid carried by the workpiece into the tank.

[0046] Step 4: Raise and lower the observation window of the gas hood. Before the crane drives the liquid receiving tray, if the workpiece needs to be inspected by the operator, the cylinder drives the observation window of the gas hood on one side to move up and down. This makes it easier for the operator to observe and adjust the surface condition of the workpiece during the anodizing process. It also makes it easier for the operator to dump the tank liquid in the anodized part, thereby improving the quality of the anodized film on the anodized part.

[0047] When the vehicle moves to the next slot, repeat steps 2, 3, and 4.

[0048] Step 5: Drain the liquid from the liquid collection tray. When the entire anodizing process is completed, the crane drives the gas collection hood and liquid collection tray to the loading and unloading area. The liquid collection tray is first opened horizontally to both sides of the gas collection hood, and then the workpiece is placed on the shelf. The solenoid valve on the liquid collection tray opens, draining the collected liquid into the sewage pipe, and then the bottom solenoid valve is closed.

[0049] Beneficial effects of the present invention:

[0050] The present invention provides an exhaust gas collection device for crane operation in an anodizing process. The device adopts an integrated design, and the gas collection hood can be raised and lowered, making it easy to observe the status of parts and process the parts in a timely manner, thereby improving the surface quality of the parts and avoiding the rework of the anodizing process of acid-collected parts. The exhaust gas in the gas collection hood is collected by a separate fan and injected into the exhaust branch pipe through a special-shaped duckbill pipe. The special-shaped duckbill pipe is always in the exhaust branch pipe and moves in the exhaust branch pipe with the driving of the crane. Compared with the traditional anodizing line exhaust gas collection, the exhaust gas generated during the production process can be 100% collected. The liquid collecting tray adopts horizontal movement on both sides to open and close, and the tank liquid will not drip into the aisle of the production line. The production line is very clean and tidy, odorless, and does not require additional cleaning. The use of this liftable gas collection hood with a liquid collecting tray can achieve 100% collection of the exhaust gas generated during the production process, meeting environmental protection exhaust gas collection and emission requirements and occupational health requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a schematic diagram of the crane exhaust gas collection equipment for the anodizing process described in this application;

[0052] Figure 2 for Figure 1 Schematic diagram of the A direction;

[0053] Figure 3 for Figure 1 Schematic diagram of the B direction;

[0054] Among them, 1-1 closed sensor switch, 1-2 open sensor switch, 1-3 rack, 1-4 roller, 1-5 liquid collecting tray, 1-6 gear, 1-7 reduction motor, 1-8 track, 1-9 solenoid valve, 2-1 cylinder Y-type joint, 2-2 telescopic cylinder, 2-3 cylinder mounting seat, 2-4 lifting window, 2-5 rocker, 2-6 rocker shaft, 2-7 nut, 2-8 short shaft, 2-9 bearing base, 2-10 bearing, 2-11 driving handle, 2-12 air hood, 3-1 air hood exhaust pipe, 3-2 exhaust fan, 3-3 exhaust special-shaped duckbill pipe, 3-4 exhaust branch pipe, 3-5 soft sealing strip, 3-6 pallet, 4-1 water sink, 4-2 workpiece, 4-3 platform, 4-4 crane, 4-5 crane lifting hook, 4-6 crane vertical hard arm. DETAILED DESCRIPTION

[0055] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0056] Example 1

[0057] An exhaust gas collection device for a crane used in an anodizing process, consisting of an openable and closable liquid receiving tray, an exhaust gas collecting hood with a lifting window, and an exhaust gas collecting device;

[0058] The openable and closable liquid receiving tray is composed of a closing sensor switch 1-1, an opening sensor switch 1-2, a rack 1-3, a roller 1-4, a liquid receiving tray 1-5, a gear 1-6, a reduction motor 1-7, a track 1-8, and a solenoid valve 1-9;

[0059] The gas collecting hood with lifting window is composed of a cylinder Y-type joint 2-1, a telescopic cylinder 2-2, a cylinder mounting seat 2-3, a lifting window 2-4, a rocker 2-5, a rocker shaft 2-6, a nut 2-7, a short shaft 2-8, a bearing base 2-9, a bearing 2-10, a driving handle 2-11, and a gas collecting hood 2-12;

[0060] The exhaust gas collection device is composed of an exhaust hood exhaust pipe 3-1, an exhaust fan 3-2, an exhaust special-shaped duckbill pipe 3-3, an exhaust branch pipe 3-4, a soft sealing strip 3-5, and a supporting plate 3-6.

[0061] The closing sensor switch 1-1 and the opening sensor switch 1-2 are installed on the vertical rigid arm 4-6 of the traveling crane through the mounting bracket, and play the role of detecting the position of the liquid receiving tray 1-5. The closing sensor switch 1-1 is the position of the liquid receiving tray closed, and the opening sensor switch 1-2 is the position of the liquid receiving tray opened;

[0062] There are two reduction motors 1-7, which are mounted on the vertical rigid arms 4-6 of the crane through mounting brackets;

[0063] There are two gears 1-6, which are connected to the reduction motor 1-7 through shafts respectively;

[0064] The rack 1-3 and the liquid receiving tray 1-5 are connected together by welding;

[0065] The roller 1-4 is connected to the rack 1-3 through a shaft;

[0066] There are two rails 1-8, which are welded to the vertical rigid arms 4-6 of the crane respectively;

[0067] The solenoid valve 1-9 is installed at the bottom of the liquid receiving tray 1-5;

[0068] The openable and closable liquid receiving tray is composed of two liquid receiving trays 1-5, which are driven by a motor reducer 1-7 to perform opening and closing control; each liquid receiving tray 1-5 is respectively equipped with four rollers 1-4.

[0069] The cylinder Y-type joint 2-1 is installed on the telescopic cylinder 2-2;

[0070] The telescopic cylinder 2-2 is fixed on the air collecting cover 2-12 through the cylinder mounting seat 2-3.

[0071] There are four swing rods 2-5, one end of which is fixed to the lifting window 2-4 through the swing rod shaft 2-6 and the nut 2-7, and the other end of the swing rod 2-5 is welded to the short shaft 2-8.

[0072] There are four short shafts 2-8, and both ends of each short shaft 2-8 are mounted on bearings 2-10.

[0073] The bearing 2-10 is connected and fastened to the air collecting cover 2-12 through the bearing base 2-9.

[0074] One end of the driving handle 2-11 is connected to the cylinder Y-shaped joint 2-1, and the other end of the driving handle 2-11 is welded to a rocker rod 2-5.

[0075] The exhaust fan 3-2 is installed on the steel structure platform of the driving track column;

[0076] The air collecting hood exhaust pipe 3-1 is installed on the traveling crane 4-4, one end of the air collecting hood exhaust pipe 3-1 is connected to the exhaust special-shaped duckbill pipe 3-3, and the other end of the air collecting hood exhaust pipe 3-1 is connected to the air collecting hood 2-12;

[0077] The end of the exhaust special-shaped duckbill pipe 3-3 is provided with a narrow air duct, which is a duckbill configuration b, with both ends forming an acute angle shape;

[0078] The side of the exhaust branch pipe 3-4 is provided with a narrow opening a that is connected to the pipe, and a support plate 3-6 is installed at the lower part of the narrow opening a;

[0079] The duckbill configuration b of the exhaust special-shaped duckbill pipe 3-3 is inserted into the narrow opening a of the exhaust branch pipe 3-4, and the other end of the exhaust special-shaped duckbill pipe 3-3 is connected to the air collecting hood exhaust pipe 3-1.

[0080] The liquid receiving tray 1-5, the lifting window 2-4, the gas collecting hood 2-12, the gas collecting hood exhaust pipe 3-1, the exhaust special-shaped duckbill pipe 3-3, the exhaust branch pipe 3-4, the soft sealing strip 3-5, and the supporting plate 3-6 are made of PVC material;

[0081] The rack 1-3, roller 1-4, gear 1-6, reduction motor 1-7, track 1-8, cylinder Y-type joint 2-1, telescopic cylinder 2-2, cylinder mounting seat 2-3, rocker arm 2-5, rocker arm shaft 2-6, nut 2-7, short shaft 2-8, bearing base 2-9, bearing 2-10, drive handle 2-11, and exhaust fan 3-2 are made of steel.

[0082] When the crane 4-4 lifts the workpiece 4-2, the workpiece 4-2 is lifted out of the tank liquid, and some tank liquid will be brought out. When the crane 4-4 is raised to the upper position, the two parts of the liquid collecting tray are driven by the motor reducer 1-7 to merge from both sides of the gas collecting hood 2-12. At this time, the liquid collecting tray 1-5 collects some dripping tank liquid. The crane 4-4 drives the gas collecting hood 2-12 and the liquid collecting tray 1-5 to move together. When the crane 4-4 moves to the next tank position, the motor reducer 1-7 is started, driving the liquid collecting tray 1-5 to open horizontally, and the crane 4-4 drives the workpiece 4-2 down into the tank.

[0083] The tank liquid collected in the liquid collecting pan 1-5 opens the solenoid valve 1-9 at the bottom of the liquid collecting pan 1-5 when the crane 4-4 moves to the end of the production line, allowing the collected liquid to flow into a suitable sewage pipe, and then closes the bottom solenoid valve 1-9.

[0084] When the crane 4-4 moves to the position of the water tank 4-1 and needs to lift or put down the workpiece 4-2, the reduction motor 1-7 drives the gear 1-6, and the gear 1-6 drives the rack 1-3 and the liquid receiving tray 1-5 to move horizontally on the track 1-8 through the roller 1-4. The two liquid receiving trays 1-5 move horizontally and open. When the liquid receiving trays 1-5 are detected to be in place by the opening sensor switch 1-2, the reduction motor 1-7 stops rotating, and the two liquid receiving trays 1-5 are opened in place. In this way, the workpiece 4-2 can be lifted by the crane 4-4.

[0085] When the crane 4-4 lifts the workpiece 4-2 into place, the reduction motor 1-7 drives the gear 1-6, and the gear 1-6 drives the rack 1-3 and the liquid receiving tray 1-5 to move horizontally on the track 1-8 through the roller 1-4. The liquid receiving tray 1-5 is closed horizontally. After the liquid receiving tray 1-5 is detected to be in place by the closed induction switch 1-1, the reduction motor 1-7 stops rotating, and the two liquid receiving trays 1-5 are closed into place. The tank liquid brought out of the water tank 4-1 by the workpiece 4-2 drips into the liquid receiving tray 1-5, which prevents the tank liquid brought out of the water tank 4-1 by the workpiece 4-2 from contaminating other equipment and reduces the corrosion of other equipment by the tank liquid.

[0086] When the operator needs to observe the workpiece 4-2 lifted in the traveling crane, the cylinder Y-type joint 2-1 connected to the telescopic cylinder 2-2 extends, and the cylinder Y-type joint 2-1 rotates the driving handle 2-11. Driven by the driving handle 2-11, the four rocker shafts welded to the short shaft 2-8 rotate together, driving the lifting window 2-4 to move vertically upward. The lifting window rises, and the operator observes the condition of the workpiece 4-2 in the traveling crane 4-4.

[0087] When the operator checks that workpiece 4-2 is complete and needs to close window 2-4, the cylinder Y-joint 2-1 connected to telescopic cylinder 2-2 retracts, and cylinder Y-joint 2-1 rotates drive handle 2-11. Driven by drive handle 2-11, the four rocker shafts welded to short shaft 2-8 rotate together, driving window 2-4 to move vertically downward, and the window is lowered and closed. This makes it easier for the operator to observe and adjust the processing status of the part during the anodizing process, thereby improving the quality of the anodized film on the part.

[0088] When the exhaust special-shaped duckbill pipe 3-3 is inserted into the exhaust branch pipe 3-4, the weight of the exhaust special-shaped duckbill pipe 3-3 can be borne by the supporting plate 3-6, ensuring that the exhaust special-shaped duckbill pipe 3-3 can move smoothly in the exhaust branch pipe 3-4. A soft sealing strip 3-5 is installed on the exhaust branch pipe 3-4, which can cover the narrow opening a on the exhaust branch pipe 3-4 that the exhaust special-shaped duckbill pipe 3-3 does not pass through, thereby preventing other gases in the workshop from entering the exhaust branch pipe 3-4. When the traveling crane 4-4 moves horizontally left and right, it drives the exhaust special-shaped duckbill pipe 3-3 to move with the traveling crane 4-4, and the duckbill configuration b on the exhaust special-shaped duckbill pipe 3-3 can easily lift up the soft sealing strip 3-5 covering the opening a on the exhaust branch pipe 3-4;

[0089] When the crane 4-4 is stopped or in motion, the gas in the crane air hood 2-12 is extracted by the exhaust fan 3-2 and discharged into the exhaust gas treatment system through the air hood exhaust pipe 3-1, the exhaust special-shaped duckbill pipe 3-3, and the exhaust branch pipe 3-4. This effectively discharges the corrosive acid and alkaline gases emitted by the workpiece 4-2 in the crane air hood 2-12, ensuring clean air in the workshop.

[0090] The exhaust special-shaped duckbill pipe 3-3 is always in the exhaust branch pipe 3-4 during the movement of the vehicle 4-4, and the gas in the gas collecting hood 2-12 is discharged to the exhaust gas treatment system. The entire exhaust system is in a negative pressure state, and there will be no exhaust gas overflow at the opening a of the exhaust branch pipe 3-4.

[0091] The working process of the above equipment includes the following steps:

[0092] Step 1: Start the exhaust fan. Before the production line starts running, the exhaust fan of the exhaust gas treatment and purification system should be turned on. The fans for the purification treatment of the entire production line include the fans for exhausting air on the side of the trough, the fans for exhausting air from the crane hood, and the main exhaust fan of the system. Among them:

[0093] (1) Turn on the main exhaust fan: Before the anodizing production operation, the main exhaust pipe exhaust fan must be turned on first. The main exhaust duct is formed by the crane air collection hood duct and the tank side exhaust duct. When the fan is turned on, the exhaust gas in the main pipe and the exhaust gas in the branch pipe can be extracted.

[0094] (2) Turn on the exhaust fan on the tank side: Generally, after the preparation work for anodizing production is completed, the exhaust fan on the tank side is turned on. The purpose of setting up a separate exhaust fan on the tank side is to better remove the gas volatilized from the tank liquid. The extracted gas is then collected into the exhaust gas treatment main pipe.

[0095] (3) The exhaust fan of the traveling air collecting hood is turned on: the exhaust gas of the traveling air collecting hood is extracted by the exhaust fan installed on the steel structure platform on the top of the traveling track column, and is collected into the exhaust gas branch pipe of the air collecting hood through the exhaust duckbill pipe. The mouth of the exhaust duckbill pipe is always in the exhaust branch pipe, and moves in the branch pipe as the traveling crane is driven.

[0096] First turn on the fan of the main exhaust pipe, then turn on the fan for side exhaust of the slot, and the exhaust fan of the overhead dust collection hood to ensure that 100% of the exhaust gas generated by the entire production line is collected and treated.

[0097] Step 2: The liquid collection tray opens horizontally to either side of the hood. The tray consists of two parts. These trays are positioned to either side of the hood to prevent the workpiece from hitting the tray when being lifted from the tank or lowered from a high position. Before machining begins, the crane moves the tray to either side of the hood, driving the workpiece. When the crane reaches the designated tank position, the tank cover opens, the workpiece is lowered into the tank, and the cover closes.

[0098] Step 3: The liquid collection tray receives the tank liquid. After the required process time is reached, the tank cover opens and the crane lifts the workpiece. Once the crane has raised the workpiece to a high position, the two liquid collection trays, driven by a motor reducer, merge horizontally from either side of the gas hood. The liquid collection trays then collect any dripping liquid from the workpiece. The crane then drives the gas hood and liquid collection tray together to the next tank position. During this movement, the liquid collection tray remains directly below the gas hood, collecting liquid carried by the workpiece into the tank.

[0099] Step 4: Raise and lower the observation window of the gas hood. Before the crane drives the liquid receiving tray, if the workpiece needs to be inspected by the operator, the cylinder drives the observation window of the gas hood on one side to move up and down. This makes it easier for the operator to observe and adjust the surface condition of the workpiece during the anodizing process. It also makes it easier for the operator to dump the tank liquid in the anodized part, thereby improving the quality of the anodized film on the anodized part.

[0100] When the vehicle moves to the next slot, repeat steps 2, 3, and 4.

[0101] Step 5: Drain the liquid from the liquid collection tray. When the entire anodizing process is completed, the crane drives the gas collection hood and liquid collection tray to the loading and unloading area. The liquid collection tray is first opened horizontally to both sides of the gas collection hood, and then the workpiece is placed on the shelf. The solenoid valve on the liquid collection tray opens, draining the collected liquid into the sewage pipe, and then the bottom solenoid valve is closed.

[0102] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art may make various modifications or substitutions within the technical scope disclosed in the present invention, and all such modifications or substitutions shall be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A crane exhaust gas collection device for anodizing process, characterized in that: It consists of an openable and closable liquid receiving tray, a gas collecting hood with a lifting window, and an exhaust gas collection device; The openable and closable liquid receiving tray is composed of a closing induction switch (1-1), an opening induction switch (1-2), a rack (1-3), a roller (1-4), a liquid receiving tray (1-5), a gear (1-6), a reduction motor (1-7), a track (1-8), and a solenoid valve (1-9); The gas collecting hood with a lifting window is composed of a cylinder Y-shaped joint (2-1), a telescopic cylinder (2-2), a cylinder mounting seat (2-3), a lifting window (2-4), a swing arm (2-5), a swing arm shaft (2-6), a nut (2-7), a short shaft (2-8), a bearing base (2-9), a bearing (2-10), a driving handle (2-11), and a gas collecting hood (2-12); The waste gas collection device is composed of an air collecting hood exhaust pipe (3-1), an exhaust fan (3-2), an exhaust special-shaped duckbill pipe (3-3), an exhaust branch pipe (3-4), a soft sealing strip (3-5), and a supporting plate (3-6).

2. The exhaust gas collection equipment for anodizing process crane according to claim 1, characterized in that: The closing induction switch (1-1) and the opening induction switch (1-2) are mounted on the vertical rigid arm (4-6) of the crane via a mounting bracket, and serve to detect the position of the liquid receiving tray (1-5). The closing induction switch (1-1) indicates the closed position of the liquid receiving tray, and the opening induction switch (1-2) indicates the open position of the liquid receiving tray. There are two reduction motors (1-7), which are mounted on the vertical rigid arm (4-6) of the crane via a mounting base; There are two gears (1-6), which are respectively connected to the reduction motor (1-7) through shafts; The rack (1-3) and the liquid receiving tray (1-5) are connected together by welding; The roller (1-4) is connected to the rack (1-3) via a shaft; There are two rails (1-8), which are respectively welded on the vertical hard arms (4-6) of the crane; The solenoid valve (1-9) is installed at the bottom of the liquid receiving tray (1-5); The openable and closable liquid receiving tray as a whole is composed of two liquid receiving trays (1-5), which are driven by a reduction motor (1-7) to perform opening and closing control; each liquid receiving tray (1-5) is respectively equipped with four rollers (1-4).

3. The exhaust gas collection equipment for anodizing process crane according to claim 1, characterized in that: The cylinder Y-type joint (2-1) is installed on the telescopic cylinder (2-2); The telescopic cylinder (2-2) is fixed on the gas collecting cover (2-12) via a cylinder mounting seat (2-3). There are four swing rods (2-5), one end of which is fixed to the lifting window (2-4) through a swing rod shaft (2-6) and a nut (2-7), and the other end of the swing rod (2-5) is welded to a short shaft (2-8). There are four short shafts (2-8), and both ends of each short shaft (2-8) are mounted on bearings (2-10). The bearing (2-10) is connected and fastened to the gas collecting cover (2-12) via a bearing base (2-9); One end of the driving handle (2-11) is connected to the cylinder Y-shaped joint (2-1), and the other end of the driving handle (2-11) is welded to a rocker rod (2-5).

4. The exhaust gas collection equipment for anodizing process crane according to claim 1, characterized in that: The exhaust fan (3-2) is installed on the steel structure platform of the track column; The air collecting hood exhaust pipe (3-1) is installed on the traveling crane (4-4), one end of the air collecting hood exhaust pipe (3-1) is connected to the exhaust special-shaped duckbill pipe (3-3), and the other end of the air collecting hood exhaust pipe (3-1) is connected to the air collecting hood (2-12); The end of the exhaust special-shaped duckbill pipe (3-3) is provided with a narrow and long air duct, which is a duckbill configuration b, with both ends forming an acute angle shape; A narrow opening a extending through the length of the pipe is provided on the side of the exhaust branch pipe (3-4), and a supporting plate (3-6) is installed at the lower part of the narrow opening a. The duckbill configuration b of the exhaust special-shaped duckbill pipe (3-3) is inserted into the narrow opening a of the exhaust branch pipe (3-4), and the other end of the exhaust special-shaped duckbill pipe (3-3) is connected to the air collecting hood exhaust pipe (3-1).

5. The exhaust gas collection equipment for anodizing process crane according to claim 1, characterized in that: The liquid receiving tray (1-5), lifting window (2-4), gas collecting hood (2-12), gas collecting hood exhaust pipe (3-1), exhaust special-shaped duckbill pipe (3-3), exhaust branch pipe (3-4), soft sealing strip (3-5), and supporting plate (3-6) are made of PVC material; The rack (1-3), roller (1-4), gear (1-6), reduction motor (1-7), track (1-8), cylinder Y-type joint (2-1), telescopic cylinder (2-2), cylinder mounting seat (2-3), rocker (2-5), rocker shaft (2-6), nut (2-7), short shaft (2-8), bearing base (2-9), bearing (2-10), driving handle (2-11), and exhaust fan (3-2) are made of steel.

6. The exhaust gas collection equipment for anodizing process crane according to claim 1, characterized in that: When the crane (4-4) lifts the workpiece (4-2), the workpiece (4-2) is lifted out of the tank liquid, and some tank liquid is brought out. When the crane (4-4) is raised to the upper position, the two parts of the liquid receiving tray are driven by the reduction motor (1-7) to merge from both sides of the gas collecting hood (2-12). At this time, the liquid receiving tray (1-5) receives some of the dripping tank liquid. The crane (4-4) drives the gas collecting hood (2-12) and the liquid receiving tray (1-5) to move together. When the crane (4-4) moves to the next tank position, the reduction motor (1-7) is started, driving the liquid receiving tray (1-5) to open horizontally, and the crane (4-4) drives the workpiece (4-2) to descend into the tank. The tank liquid collected in the liquid collecting pan (1-5) is opened when the driving crane (4-4) moves to the end of the production line. The electromagnetic valve (1-9) at the bottom of the liquid collecting pan (1-5) is opened to allow the collected liquid to flow into a suitable sewage pipe, and then the electromagnetic valve (1-9) at the bottom is closed.

7. The exhaust gas collection equipment for anodizing process crane according to claim 1, characterized in that: When the crane (4-4) moves to the position of the water tank (4-1) and needs to lift or put down the workpiece (4-2), the reduction motor (1-7) drives the gear (1-6), and the gear (1-6) drives the rack (1-3) and the liquid receiving tray (1-5) to move horizontally on the track (1-8) through the roller (1-4), and the two liquid receiving trays (1-5) move horizontally to open. When the liquid receiving tray (1-5) is opened and the induction switch (1-2) detects that it is in place, the reduction motor (1-7) stops rotating, and the two liquid receiving trays (1-5) are opened in place, so that the workpiece (4-2) can be lifted by the crane (4-4); When the crane (4-4) lifts the workpiece (4-2) into position, the reduction motor (1-7) drives the gear (1-6), and the gear (1-6) drives the rack (1-3) and the liquid receiving tray (1-5) to move horizontally on the track (1-8) through the roller (1-4). The liquid receiving tray (1-5) is horizontally closed. After the liquid receiving tray (1-5) is detected to be in position by the closed induction switch (1-1), the reduction motor (1-7) stops rotating, and the two liquid receiving trays (1-5) are closed into position. The tank liquid brought out of the water tank (4-1) by the workpiece (4-2) drips into the liquid receiving tray (1-5), thereby preventing the tank liquid brought out of the water tank (4-1) by the workpiece (4-2) from contaminating other equipment and reducing the corrosion of other equipment by the tank liquid.

8. The exhaust gas collection equipment for anodizing process crane according to claim 1, characterized in that: When the operator needs to observe the workpiece (4-2) lifted in the traveling crane, the cylinder Y-type joint (2-1) connected to the telescopic cylinder (2-2) extends, and the cylinder Y-type joint (2-1) rotates the driving handle (2-11). Driven by the driving handle (2-11), the four rocker shafts welded to the short shaft (2-8) rotate together, driving the lifting window (2-4) to move vertically upward. The lifting window rises, and the operator observes the condition of the workpiece (4-2) in the traveling crane (4-4); When the operator has finished checking the workpiece (4-2) and needs to close the lifting window (2-4), the cylinder Y-type joint (2-1) connected to the telescopic cylinder (2-2) retracts, and the cylinder Y-type joint (2-1) rotates the driving handle (2-11). Driven by the driving handle (2-11), the four rocker shafts welded to the short shaft (2-8) rotate together, driving the lifting window (2-4) to move vertically downward, and the lifting window descends and closes.

9. The exhaust gas collection equipment for anodizing process crane according to claim 1, characterized in that: When the exhaust special-shaped duckbill pipe (3-3) is inserted into the exhaust branch pipe (3-4), the weight of the exhaust special-shaped duckbill pipe (3-3) can be borne by the supporting plate (3-6), ensuring that the exhaust special-shaped duckbill pipe (3-3) can move smoothly in the exhaust branch pipe (3-4); a soft sealing strip (3-5) is installed on the exhaust branch pipe (3-4), which can cover the narrow opening a on the exhaust branch pipe (3-4) that the exhaust special-shaped duckbill pipe (3-3) does not pass through, thereby preventing other gases in the workshop from entering the exhaust branch pipe (3-4); when the traveling crane (4-4) moves horizontally left and right, it drives the exhaust special-shaped duckbill pipe (3-3) to move together with the traveling crane (4-4); the duckbill configuration b on the exhaust special-shaped duckbill pipe (3-3) can conveniently lift up the soft sealing strip (3-5) covering the opening a on the exhaust branch pipe (3-4); When the crane (4-4) is in a stopped or moving state, the gas in the crane air hood (2-12) is extracted by the exhaust fan (3-2) and discharged into the exhaust gas treatment system through the air hood exhaust pipe (3-1), the exhaust special-shaped duckbill pipe (3-3), and the exhaust branch pipe (3-4), thereby effectively exhausting the corrosive acid and alkali gas emitted by the workpiece (4-2) in the crane air hood (2-12), thereby ensuring the cleanliness of the air in the workshop. The exhaust special-shaped duckbill pipe (3-3) is always in the exhaust branch pipe (3-4) during the movement of the vehicle (4-4), and discharges the gas in the gas collecting hood (2-12) into the exhaust gas treatment system. The entire exhaust system is in a negative pressure state, and the opening a of the exhaust branch pipe (3-4) will not overflow.

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