Aluminum profile anodizing waste acid treatment equipment and treatment method thereof

Abstract

The present disclosure provides an aluminum profile anodic oxidation waste acid treatment equipment and a treatment method thereof, comprising a treatment shell provided with a filter chamber and a collection chamber; the filter chamber is provided with a filter assembly, and the collection chamber is provided with a treatment mechanism; the treatment mechanism comprises a treatment tank, the upper end of the treatment tank is provided with a liquid inlet assembly, the liquid inlet assembly is openably arranged, the treatment tank is externally provided with a dosing assembly, the treatment tank is further provided with a mixing assembly, the mixing assembly is further provided with a driving assembly, the mixing assembly is used for driving the driving assembly to drive the dosing assembly to open and close at intervals, so as to realize interval dosing into the treatment tank; the treatment tank is provided with a floating ring for pushing the driving assembly to move upwards along with the upward movement of the waste acid liquid; a positioning assembly is arranged in the treatment tank. Through the above structure, the waste acid liquid is pre-filtered by the filter assembly before being treated by the treatment mechanism, so that the suspended solids and insoluble impurities in the waste acid liquid are removed, so that the subsequent treatment mechanism can neutralize and treat the waste acid liquid.

Description

Technical Field

[0001] This disclosure relates to the field of waste acid treatment technology, and in particular to a waste acid treatment device and treatment method for aluminum profile anodizing. Background Technology

[0002] Currently, in the aluminum anodizing process of aluminum profiles, metallic aluminum serves as the anode in an electrolyte, forming a thin film of aluminum oxide on its surface through electrolysis. Commonly used electrolytes include sulfuric acid, chromic acid, and oxalic acid. During use, these electrolytes accumulate large amounts of aluminum ions and other metal ions, forming waste acid. Direct discharge of this waste acid can cause serious pollution to soil, water sources, and ecosystems; therefore, it needs to be treated to reduce its environmental impact.

[0003] Currently, there are various methods for treating waste acid, such as oxidation, extraction, membrane separation, and chemical neutralization. Among these, chemical neutralization is the most convenient, requiring only the addition of an alkaline solution for stirring and filtration. This method is widely used due to its low cost and high efficiency in subsequent treatment. However, the waste acid produced by aluminum profile anodizing contains suspended solids and insoluble impurities. Currently, the neutralization process does not pre-filter the waste acid, causing these substances to remain in the waste acid, which is detrimental to subsequent treatment. Summary of the Invention

[0004] This disclosure provides a waste acid treatment device and method for anodizing aluminum profiles, which at least solves the above-mentioned technical problems existing in the prior art.

[0005] A waste acid treatment device for aluminum profile anodizing, the waste acid treatment device comprising: The processing housing has a filtration chamber and a collection chamber arranged from top to bottom inside the processing housing; A filter assembly, located in a filter chamber, is used for pre-filtration of waste acid liquid; A processing unit, located in the collection chamber, is used to connect to the filtration chamber and neutralize the waste acid entering the processing unit; The processing mechanism includes a processing tank, with an inlet assembly at the top for connecting to the filter chamber. The inlet assembly is openable and closable. A dosing assembly for adding chemicals into the processing tank is located outside the processing tank. A mixing assembly is also located inside the processing tank. The mixing assembly is used to mix the chemicals in the processing tank with the waste acid liquid. A driving assembly is also located on the mixing assembly. The mixing assembly operates to drive the driving assembly to open and close the dosing assembly at intervals, thereby realizing the intermittent addition of chemicals into the processing tank. A floating ring, located inside the treatment tank, is used to push the drive assembly upward as the waste acid solution rises, thereby controlling the drive assembly to release its drive over the dosing assembly. A positioning component, located inside the processing tank, is used to lock and position the upward-moving drive component when the liquid inlet component is closed.

[0006] Furthermore, the filtration assembly includes a filter screen disposed within the filtration chamber.

[0007] Furthermore, the liquid inlet assembly includes a liquid inlet pipe for connecting the filter chamber and the treatment tank. The liquid inlet pipe is provided with a liftable first piston column, and the first piston column is provided with a flow channel. The liquid inlet assembly also includes a power component, which is used to drive the first piston column to move upward so that its upper end extends into the filter chamber to open the flow channel, and the power component is used to drive the first piston column to move downward so that it retracts into the liquid inlet pipe to close the flow channel.

[0008] Furthermore, the mixing assembly includes a rotating shaft rotatably disposed within the processing tank, the upper end of the rotating shaft extending through the first piston column into the filter chamber, an inner agitator plate being provided on the rotating shaft located within the processing tank, and an outer agitator plate being provided at the end of the rotating shaft extending through the first piston column.

[0009] Furthermore, the dosing assembly includes a horizontal tube and a vertical tube that are perpendicular to each other and connected to each other. The upper end of the vertical tube is used to connect to the drug supply tube, and the lower end is connected to the inside of the treatment tank through a connecting tube. One end of the horizontal tube is installed on the outer wall of the treatment tank. A second piston rod is provided inside the horizontal tube through a first spring. A push rod is provided on one end face of the second piston rod, extending into the treatment tank. The second piston rod is provided with a through hole corresponding to the vertical tube. The first spring is used to drive the second piston rod to move so that the vertical tube and the through hole are misaligned. The driving assembly is used to cooperate with the push rod to realize that the through hole and the vertical tube are spaced apart and opposite.

[0010] Furthermore, the drive assembly includes a drive ring that is sleeved on the outside of the rotating shaft and can be raised and lowered. The rotation of the rotating shaft is used to drive the drive ring to rotate. The outer side wall of the drive ring is provided with a protruding ring along its circumference. The two ends of the protruding ring form guide slopes for the push rod to slide in or slide out. The rotating shaft is equipped with a second spring for pushing the drive ring downward. The downward movement of the drive ring is used to make the push rod and the convex ring face each other. The floating ring is sleeved outside the rotating shaft. The upward movement of the floating ring is used to push the drive ring upward, so that the push rod and the convex ring are misaligned.

[0011] Furthermore, the inner wall of the drive ring is provided with a groove located at the upper end along its circumference; The positioning assembly includes a positioning block disposed on the top wall of the processing tank. The positioning block has a cavity with an opening facing the liquid inlet pipe. A positioning tongue with one end protruding is provided in the cavity via a third spring. A positioning rod penetrating the positioning block is provided at the other end of the positioning tongue. A driving inclined surface is provided on the protruding end of the positioning tongue and on its upper side. The first piston rod moves down to make its lower end press against the driving inclined surface to retract the positioning block, thereby driving the positioning rod to extend into the slot to position the upward-moving driving ring.

[0012] Furthermore, the power component includes a cylinder for driving the first piston rod to rise and fall.

[0013] Furthermore, the lower end of the treatment tank is provided with a motor for driving the rotating shaft, and the lower end of the treatment tank is provided with a drain pipe for discharging the waste acid liquid in the treatment tank into the collection chamber.

[0014] This invention also provides a method for treating waste acid from aluminum profile anodizing, which uses the aforementioned waste acid treatment equipment for aluminum profile anodizing, and specifically includes the following steps: S1. The first piston rod is driven to move down by the cylinder to close the liquid inlet assembly and add the waste acid liquid to be treated into the filter chamber. S2. The corresponding first piston column is driven upward by the cylinder to open the liquid inlet assembly. At this time, the waste acid liquid filtered by the filter screen in the filter chamber enters the treatment tank. During this process, the rotating shaft is driven by the motor to rotate so that the dosing assembly adds the agent into the treatment tank at intervals. At the same time, the mixing assembly mixes and stirs the waste acid liquid and the agent in the treatment tank. S3. The waste acid liquid entering the treatment tank can drive the float ring to push the drive ring upward. When the float ring pushes the drive ring upward to the top wall of the treatment tank, the cylinder drives the first piston column to descend, so that the liquid inlet assembly closes, thereby completing the quantitative addition of waste acid liquid into the treatment tank. At this time, the positioning assembly positions the drive ring so that the rotation of the drive ring will not drive the dosing assembly to open and close intermittently for dosing. At this time, the waste acid liquid is neutralized in the treatment tank. S4. Discharge the treated waste acid liquid from the treatment tank into the collection chamber for collection; S5. Repeat steps S2-S4 to better neutralize the waste acid in the filter chamber.

[0015] Compared with the prior art, the aluminum profile anodizing waste acid treatment equipment and method disclosed herein have the following beneficial effects: 1. In this disclosure, by setting up a filtration component and a treatment mechanism, the waste acid liquid is pre-filtered by the filtration component before entering the treatment mechanism, so that suspended solids and insoluble impurities in the waste acid liquid are removed, so that the subsequent treatment mechanism can neutralize the waste acid liquid.

[0016] 2. In this disclosure, by setting up a mixing component and a dosing component, during the process of adding waste acid liquid from the filtration chamber into the treatment tank, the mixing component stirs the waste acid liquid in the treatment tank while driving the dosing component to add chemicals to the treatment tank intermittently. This can avoid waste of chemicals and make the mixing effect between the chemicals and the waste acid liquid better, thereby improving the neutralization effect of the waste acid liquid.

[0017] 3. In this disclosure, during the process of adding waste acid liquid into the treatment tank in the filtration chamber, air in the treatment tank flows into the filtration chamber, thereby generating bubbles. At the same time, the bubbles are dispersed under the action of the mixing component, thereby increasing the contact area between the bubbles and the filter screen, causing the suspended matter and insoluble impurities on the filter screen to be agitated, thus better ensuring the filtration effect of the filter screen.

[0018] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0019] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which: In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0020] Figure 1 A schematic diagram of the waste acid treatment equipment in an embodiment of this disclosure is shown; Figure 2 A cross-sectional schematic diagram of a waste acid treatment device according to an embodiment of this disclosure is shown; Figure 3 A schematic diagram illustrating the implementation flow of the processing mechanism method in an embodiment of this disclosure is shown; Figure 4 A half-sectional schematic diagram of the processing tank in an embodiment of this disclosure is shown; Figure 5 A cross-sectional schematic diagram of the dosing assembly in an embodiment of this disclosure is shown; Figure 6 A schematic diagram illustrating the interaction between the hybrid component and the driving component in an embodiment of this disclosure is shown; Figure 7 A schematic diagram of the structure of the hybrid component in an embodiment of this disclosure is shown; Figure 8 A schematic diagram of the drive ring structure in an embodiment of this disclosure is shown; Figure 9 A schematic diagram of the positioning component in an embodiment of this disclosure is shown; Figure 10A cross-sectional schematic diagram of the positioning component in an embodiment of this disclosure is shown.

[0021] Explanation of the labels in the diagram: 100. Processing shell; 101. Filter chamber; 102. Collection chamber; 103. Discharge pipe; 110. Processing tank; 200, Float ring; 201, Drain pipe; 210, Filter screen; 220, Inlet pipe; 230, Rotating shaft; 231, Inner agitator plate; 232, Outer agitator plate; 240, Drive ring; 250, Cylinder; 260, Motor; 310. First piston rod; 311. Flow channel; 320. Horizontal tube; 330. Vertical tube; 331. Drug supply tube; 332. Connecting tube; 340. Connecting bracket; 401. Flow guide; 402. Mounting flange; 500, plug; 510, first spring; 520, second piston rod; 521, push rod; 522, through hole; 601, Slot; 610, Protruding Ring; 611, Guide Inclined Surface; 620, Second Spring; 701, retaining ring; 710, connecting plate; 711, limiting groove; 810. Bracket; 811. Limiting block; 910. Positioning block; 911. Fixing part; 920. Positioning tongue; 921. Driving inclined surface; 930. Positioning rod; 940. Nut; 1001, cavity; 1010, third spring. Detailed Implementation

[0022] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0023] Combination Figure 1-10 As shown in this embodiment, an aluminum profile anodizing waste acid treatment device is used to treat the waste acid liquid generated in the anodizing process of aluminum profiles.

[0024] like Figure 1-2 As shown in this embodiment, an aluminum profile anodizing waste acid treatment device includes a treatment shell 100, which has a filter chamber 101 and a collection chamber 102 arranged from top to bottom inside the treatment shell 100. A filter assembly is provided in the filter chamber 101 for pre-filtration of waste acid liquid. A processing mechanism is provided in the collection chamber 102, which is used to connect to the filter chamber 101 and neutralize the waste acid liquid entering the processing assembly. The processing mechanism includes a processing tank 110. The upper end of the processing tank 110 is provided with a liquid inlet assembly for connecting to the filter chamber 101. The liquid inlet assembly is openable and closable. A dosing assembly for adding chemicals into the processing tank 110 is provided outside the processing tank 110. A mixing assembly is also provided inside the processing tank 110. The mixing assembly is used to mix the chemicals in the processing tank 110 with the waste acid liquid. A driving assembly is also provided on the mixing assembly. The mixing assembly is used to drive the driving assembly to drive the dosing assembly to open and close intermittently, so as to realize the intermittent addition of chemicals into the processing tank 110. A floating ring 200 is disposed inside the treatment tank 110 and is used to push the drive assembly upward as the waste acid liquid rises, so as to control the drive assembly to release the drive of the dosing assembly. A positioning component is provided inside the processing tank 110, which is used to lock and position the upward-moving drive component when the liquid inlet component is closed.

[0025] In this embodiment, the upper end of the filter chamber 101 is provided with an opening to form a liquid inlet, allowing waste acid to be added into the filter chamber 101. The filter assembly can pre-filter the waste acid added into the filter chamber 101, initially removing suspended solids and insoluble impurities, so that the waste acid can enter the treatment mechanism for neutralization. The collection chamber 102 is provided so that the waste acid treated by the treatment mechanism can enter the collection chamber 102 for collection. Specifically, a discharge pipe 103 is provided at the bottom wall of the processing shell 100 to connect to the collection chamber 102, so that the waste acid liquid in the collection chamber 102 can be discharged and enter the subsequent process for treatment. In this embodiment, the liquid inlet assembly, through its opening and closing, allows the pre-filtered waste acid in the filter chamber 101 to enter the treatment tank 110. Specifically, during the injection of waste acid into the treatment tank 110, the mixing assembly agitates the waste acid in the treatment tank 110. Simultaneously, it drives the drive assembly to intermittently add chemicals (e.g., sodium hydroxide solution) into the treatment tank 110, ensuring thorough mixing of the chemicals with the waste acid under the action of the mixing assembly, thereby neutralizing the waste acid. When the amount of waste acid injected into the treatment tank 110 reaches a suitable level, the liquid inlet assembly closes to stop the injection of waste acid into the treatment tank 110. At this time, the float ring 200, under the action of the waste acid, pushes the drive assembly upward. Then, the mixing assembly stops driving the drive assembly to intermittently add chemicals, allowing the mixing assembly to continue agitating the waste acid in the treatment tank 110, thus neutralizing the waste acid. Specifically, a drain pipe 201 is provided at the bottom end of the treatment tank 110 for discharging the waste acid liquid in the treatment tank 110 into the collection chamber 102. The drain pipe 201 is equipped with a solenoid valve. When the treatment tank 110 is undergoing neutralization treatment, the solenoid valve is closed to neutralize the waste acid liquid in the treatment tank 110. After the waste acid liquid in the treatment tank 110 has been neutralized, the solenoid valve is opened to discharge the waste acid liquid in the treatment tank 110 into the collection chamber 102 for collection, so that it can be used for subsequent processing steps. It should be noted that when the float ring 200 pushes the drive assembly to the highest point, the liquid inlet assembly closes to stop injecting waste acid into the treatment tank 110. At this time, during the closing process of the liquid inlet assembly, the drive positioning assembly positions the drive assembly that has risen to the highest point to ensure that the position of the drive assembly remains unchanged. This is to prevent the drive assembly from resetting when the float ring 200 moves down to reset after the subsequent opening of the solenoid valve for liquid drainage, which would cause the liquid inlet assembly to add chemicals. When it is necessary to inject waste acid into the treatment tank 110 again for neutralization, the solenoid valve is closed. At this time, the liquid inlet assembly is opened to inject waste acid into the treatment tank 110 again. At this time, the position lock of the liquid inlet assembly drive positioning assembly on the drive assembly is released so that the drive assembly is reset and cooperates with the mixing assembly. In practical use, in order to increase the processing capacity of the waste acid treatment equipment, the collection chamber 102 is equipped with multiple processing mechanisms, each of which works independently, so that the waste acid treatment equipment can treat the waste acid liquid without stopping, resulting in better treatment effect.

[0026] like Figure 2 As shown, in this embodiment, the filtration assembly includes a filter screen 210 disposed in the filtration chamber 101. The filter screen 210 can be used to pre-filter suspended solids and insoluble impurities in the waste acid solution.

[0027] In this embodiment, the liquid inlet assembly includes a liquid inlet pipe 220, which connects the filter chamber 101 and the treatment tank 110. The liquid inlet pipe 220 is provided with a liftable first piston column 310, which is provided with a flow channel 311. The liquid inlet assembly also includes a power component, which is used to drive the first piston column 310 to move upward so that its upper end extends into the filter chamber 101, thereby opening the flow channel 311. The power component is also used to drive the first piston column 310 to move downward so that it retracts into the liquid inlet pipe 220, thereby closing the flow channel 311.

[0028] In this embodiment, as Figure 3 and Figure 4As shown, the upper end of the inlet pipe 220 forms a frustum-shaped guide portion 401. The diameter of the guide portion 401 gradually decreases from top to bottom. The upper end of the guide portion 401 extends outward to form a mounting flange 402. The mounting flange 402 is used to install the inlet pipe 220 and the treatment tank 110 on the top wall of the collection chamber 102. The top wall of the collection chamber 102 is provided with a connecting hole that connects to the filter chamber 101. This connecting hole is used to be opposite to the guide portion 401. Through the above-described structure, the upper end of the first piston column 310 moves upward into the guide section 401, thereby opening the flow channel 311. At this time, the waste acid liquid in the filter chamber 101 can flow into the treatment tank 110 through the flow channel 311. Since the treatment tank 110 is in a closed state, the air inside it can flow into the filter chamber 101 through the flow channel 311 to form bubbles. The bubbles rise in the filter chamber 101, thereby impacting and agitating the suspended matter and insoluble impurities on the filter screen 210, making them less likely to adhere to the filter screen 210, thus ensuring the filtration effect of the filter screen 210. When the lower end of the first piston column 310 moves downward and retracts into the inlet pipe 220, the flow channel 311 closes, thereby stopping the injection of waste acid liquid into the treatment tank 110. The lifting and lowering of the first piston rod 310 is achieved through a power component; Specifically, the power component includes a cylinder 250, which drives the first piston column 310 to rise and fall. The cylinder 250 is mounted on the mounting flange 402, and the output shaft of the cylinder 250 extends into the filter chamber 101. The output shafts of the cylinder 250 are connected by a connecting bracket 340, and a connecting column for connecting the first piston column 310 is provided on the connecting bracket 340. Thus, the cylinder 250 can better drive the first piston column 310 to rise and fall.

[0029] In this embodiment, the mixing component includes a rotating shaft 230 rotatably disposed in the processing tank 110. The upper end of the rotating shaft 230 extends through the first piston column 310 into the filter chamber 101. An inner stirring plate 231 is provided on the rotating shaft 230 located in the processing tank 110, and an outer stirring plate 232 is provided at the end of the rotating shaft 230 extending through the first piston column 310.

[0030] In actual use, the bottom end of the treatment tank 110 is equipped with a motor 260 for driving the rotating shaft 230 to rotate. The motor 260 drives the rotating shaft 230 to rotate, which in turn drives the inner stirring plate 231 to rotate, thereby stirring and mixing the waste acid liquid and reagents in the treatment tank 110. At the same time, it can drive the outer stirring plate 232 to rotate, which can disperse the rising bubbles, thereby increasing the contact area between the bubbles and the filter screen 210, so that the suspended matter and insoluble impurities on the filter screen 210 are agitated, thus better ensuring the filtration effect of the filter screen 210.

[0031] In this embodiment, the dosing assembly includes a horizontal pipe 320 and a vertical pipe 330 that are perpendicular to each other and connected. The upper end of the vertical pipe 330 is used to connect to the drug supply pipe 331, and the lower end is connected to the treatment tank 110 through the connecting pipe 332. One end of the horizontal pipe 320 is installed on the outer wall of the treatment tank 110. A second piston post 520 is provided in the horizontal pipe 320 through a first spring 510. A push rod 521 extending into the treatment tank 110 is provided on one end face of the second piston post 520. A through hole 522 corresponding to the vertical pipe 330 is provided on the second piston post 520. The first spring 510 is used to drive the second piston post 520 to move so that the vertical pipe 330 and the through hole 522 are misaligned. The driving assembly is used to cooperate with the push rod 521 to make the through hole 522 and the vertical pipe 330 spaced apart and opposite.

[0032] In this embodiment, the processing housing 100 is also provided with a drug storage tank (not shown in the figure). The drug storage tank is used to store the drug, and the drug supply pipe 331 is used to connect to the drug storage tank. The drug storage tank has a certain pressure, which can press the drug inside into the corresponding drug dosing component through the drug supply pipe 331. Among them, combined Figure 5 As shown, the opening of the horizontal tube 320 faces the other end, and a plug 500 is threaded onto the opening, thereby enabling the installation of the second piston rod 520 and the first spring 510 inside. The first spring 510 is used to drive the second piston rod 520 to move, causing the through hole 522 to be misaligned with the vertical tube 330. At this time, the dosing assembly is closed, and the push rod 521 extends into the treatment tank 110. When the drive assembly drives the push rod 521 to retract, the through hole 522 and the vertical tube 330 are aligned. At this time, the dosing assembly is opened, and the agent is added into the treatment tank 110 through the connecting pipe 332 to complete the dosing.

[0033] In this embodiment, the driving assembly includes a driving ring 240 that is sleeved on the outside of the rotating shaft 230 and can be raised and lowered. The rotation of the rotating shaft 230 is used to drive the driving ring 240 to rotate. A convex ring 610 is provided on the outer side wall of the driving ring 240 along its circumference. The two ends of the convex ring 610 form guide slopes 611 for the top rod 521 to slide into or slide out. The rotating shaft 230 is provided with a second spring 620 for pushing the drive ring 240 downward. The downward movement of the drive ring 240 is used to make the push rod 521 and the convex ring 610 face each other. The floating ring 200 is sleeved on the outside of the rotating shaft 230. The upward movement of the floating ring 200 is used to push the drive ring 240 upward, so that the push rod 521 and the convex ring 610 are misaligned.

[0034] In practical use, this embodiment is combined with Figure 6-8As shown, brackets 810 are installed opposite each other inside the drive ring 240, and a rotating shaft 230 is installed through the brackets 810. Opposite connecting plates 710 are installed on the rotating shaft 230 located between the brackets 810. Limiting grooves 711 are provided at the ends of the connecting plates 710 that are far apart from each other. Limiting blocks 811 are provided opposite each other on the inner sidewall of the drive ring 240 along the axial direction of the rotating shaft 230. The limiting blocks 811 slide in the corresponding limiting grooves 711 so that the rotating shaft 230 rotates to drive the drive ring 240 to rotate. At the same time, the drive ring 240 can move up and down along the rotating shaft 230. The upper and lower sides of the convex ring 610 are also provided with mating inclined surfaces, so that when the drive ring 240 is raised or lowered, the push rod 521 slides up or down the convex ring 610 along the mating inclined surfaces. Specifically, when the rotating shaft 230 is provided with a retaining ring 701 for installing the second spring 620, one end of the second spring 620 abuts against the retaining ring 701 and the other end abuts against the bracket 810, so that it pushes the drive ring 240 down, so that the convex ring 610 and the push rod 521 correspond to each other, that is, the two are on the same horizontal plane. At this time, the rotating shaft 230 rotates and drives the drive ring 240 to rotate, so that the push rod 521 slides into or away from the convex ring 610 along the guide inclined surface 611, thereby realizing the intermittent dosing of the dosing assembly. The convex ring 610 has a certain curvature, which allows the dosing assembly to remain open when the push rod 521 slides along the convex ring 610, so as to add the agent into the treatment tank 110. The intermittent dosing method can better avoid adding too much agent and wasting the agent.

[0035] Specifically, the float ring 200 is fitted around the rotating shaft 230. When the float ring 200 moves upward and presses against the bracket 810, it causes the drive ring 240 to move upward, which in turn drives the convex ring 610 to move upward and disengage from the top rod 521. At this time, the rotation of the drive ring 240 will not drive the dosing assembly to open and close intermittently, thus stopping the dosing.

[0036] In this embodiment, the inner sidewall of the drive ring 240 is provided with a slot 601 located at the upper end along its circumference; The positioning assembly includes a positioning block 910 disposed on the top wall of the processing tank 110. The positioning block 910 has a cavity 1001 with an opening facing the liquid inlet pipe 220. A positioning tongue 920 with one end protruding is provided in the cavity 1001 through a third spring 1010. A positioning rod 930 penetrating the positioning block 910 is provided at the other end of the positioning tongue 920. A driving inclined surface 921 is provided on the protruding end of the positioning tongue 920 and on its upper side. The first piston rod 310 moves down to make its lower end press against the driving inclined surface 921 to retract the positioning block 910, thereby driving the positioning rod 930 to extend into the slot 601 to position the upward-moving driving ring 240.

[0037] In actual use, when the float ring 200 moves upward and pushes the drive ring 240 to the highest point, the upper end of the drive ring 240 abuts against the upper side wall of the treatment tank 110. At this time, the first piston rod 310 moves downward to close the liquid inlet assembly. During this process, the lower end of the first piston rod 310 moves downward and squeezes the drive inclined surface 921 to retract the positioning tongue 920, thereby pushing the positioning rod 930 into the slot 601, thereby positioning the drive ring 240 so that it will not reset under the action of the second spring 620. Specifically, in order to promptly control the first piston rod 310 to move downwards to close the liquid inlet assembly when the float ring 200 moves to its highest point, in this embodiment, a pressure sensor for cooperating with the drive ring 240 is provided on the top wall of the treatment tank 110. The pressure sensor is electrically connected to a controller. When the drive ring 240 moves upwards and squeezes the pressure sensor so that the pressure sensor detects a pressure signal, the controller controls the cylinder 250 to drive the first piston rod 310 downwards, thereby automatically controlling the positioning assembly to position the drive ring 240. When cylinder 250 drives the first piston column 310 to move upward, the liquid inlet assembly opens, allowing the waste acid liquid in the filter chamber 101 to enter the treatment tank 110. At this time, the first piston column 310 will not squeeze the drive inclined surface 921, so that under the action of the third spring 1010, the positioning tongue 920 and the positioning rod 930 are reset, releasing the positioning of the drive ring 240, so that it is reset under the action of the second spring 620, so that it can drive the dosing assembly to open and close intermittently again. The upper end of the positioning block 910 extends outward to form a fixing part 911. The fixing part 911 is fixedly installed at the upper end of the processing tank 110 by screws so that the positioning tongue 920 cooperates with the first piston column 310. Specifically, in order to install the positioning tongue 920 and the positioning rod 930 in the positioning block 910, a nut 940 is installed on the external thread of the positioning rod 930. When the nut 940 cooperates with the end of the positioning block 910, the positioning tongue 920 and the positioning rod 930 are installed in the positioning block 910.

[0038] This invention also provides a method for treating waste acid from aluminum profile anodizing, which uses the aforementioned waste acid treatment equipment and specifically includes the following steps: S1. The first piston rod 310 is driven to move down by the cylinder 250 to close the liquid inlet assembly and add the waste acid liquid to be treated into the filter chamber 101. S2. The cylinder 250 drives the corresponding first piston column 310 to move upward, so that the liquid inlet assembly opens. At this time, the waste acid liquid filtered by the filter screen 210 in the filter chamber 101 enters the treatment tank 110. During this process, the motor 260 drives the rotating shaft 230 to rotate, so that the dosing assembly adds the agent into the treatment tank 110 at intervals. At the same time, the mixing assembly mixes and stirs the waste acid liquid and the agent in the treatment tank 110. S3. The waste acid liquid entering the treatment tank 110 can drive the float ring 200 to push the drive ring 240 upward. When the float ring 200 pushes the drive ring 240 upward to the top wall of the treatment tank 110, the cylinder 250 drives the first piston column 310 downward to close the liquid inlet assembly, so as to complete the quantitative addition of waste acid liquid into the treatment tank 110. At this time, the positioning assembly positions the drive ring 240 so that the rotation of the drive ring 240 will not drive the dosing assembly to open and close intermittently for dosing. At this time, the waste acid liquid is neutralized in the treatment tank 110. S4. Discharge the treated waste acid liquid in the treatment tank 110 into the collection chamber 102 for collection; S5. Repeat steps S2-S4 to better neutralize the waste acid in the filter chamber 101.

[0039] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A waste acid treatment device for aluminum profile anodizing, characterized in that, The waste acid treatment equipment includes: The processing housing (100) has a filter chamber (101) and a collection chamber (102) arranged from top to bottom inside the processing housing (100). A filter assembly is disposed in a filter chamber (101) for pre-filtration of waste acid liquid; the filter assembly includes a filter screen (210) disposed in the filter chamber (101). The processing mechanism is located in the collection chamber (102) and is used to connect to the filter chamber (101) and neutralize the waste acid liquid entering the processing assembly; The processing mechanism includes a processing tank (110), and the upper end of the processing tank (110) is provided with a liquid inlet assembly for connecting to the filter chamber (101). The liquid inlet assembly can be opened and closed. A dosing assembly for adding chemicals into the processing tank (110) is provided outside the processing tank (110). A mixing assembly is also provided inside the processing tank (110). The mixing assembly is used to mix the chemicals in the processing tank (110) with the waste acid liquid. A driving assembly is also provided on the mixing assembly. The mixing assembly works to drive the driving assembly to drive the dosing assembly to open and close intermittently, so as to realize the intermittent addition of chemicals into the processing tank (110). A floating ring (200) is provided inside the treatment tank (110) and is used to push the drive assembly upward as the waste acid liquid moves upward, so as to control the drive assembly to release the drive of the dosing assembly; A positioning component, located within the processing tank (110), is used to lock and position the upward-moving drive component when the liquid inlet component is closed. The liquid inlet component includes an inlet pipe (220) for connecting the filter chamber (101) and the processing tank (110). A liftable first piston column (310) is provided within the inlet pipe (220), and a flow channel (311) is provided within the first piston column (310). The liquid inlet component also includes a power component for driving the first piston column (310) upward so that its upper end extends into the filter chamber (101), thereby facilitating the flow channel (311). When opened, the power component drives the first piston rod (310) to move downward and retract into the inlet pipe (220) to close the flow channel (311); the mixing assembly includes a rotating shaft (230) rotatably disposed in the treatment tank (110), the upper end of the rotating shaft (230) extending through the first piston rod (310) into the filter chamber (101), an inner stirring plate (231) is provided on the rotating shaft (230) located in the treatment tank (110), and an outer stirring plate (232) is provided at the end of the rotating shaft (230) extending through the first piston rod (310); the dosing assembly includes mutually perpendicular and interconnected horizontal The vertical pipe (330) is connected to the upper end of the supply pipe (331) and the lower end of the supply pipe (332) to the treatment tank (110). One end of the horizontal pipe (320) is installed on the outer wall of the treatment tank (110). A second piston rod (520) is provided in the horizontal pipe (320) through the first spring (510). A push rod (521) extending into the treatment tank (110) is provided on one end face of the second piston rod (520). A through hole (522) corresponding to the vertical pipe (330) is provided on the second piston rod (520). The first spring (510) is connected to the vertical pipe (331) through the upper end of the supply pipe (331). 10) Used to drive the second piston rod (520) to move so that the vertical tube (330) and the through hole (522) are misaligned. The drive assembly is used to cooperate with the push rod (521) to achieve the through hole (522) and the vertical tube (330) being spaced apart and opposite. The drive assembly includes a drive ring (240) that is sleeved on the outside of the rotating shaft (230) and can be raised and lowered. The rotation of the rotating shaft (230) is used to drive the drive ring (240) to rotate. The outer side wall of the drive ring (240) is provided with a convex ring (610) along its circumference. The two ends of the convex ring (610) form guide slopes (611) for the push rod (521) to slide in or slide out. The rotating shaft (230) is provided with a second spring (620) for pushing the drive ring (240) downward. The downward movement of the drive ring (240) is used to make the push rod (521) and the convex ring (610) face each other. The floating ring (200) is sleeved on the outside of the rotating shaft (230). The upward movement of the floating ring (200) is used to push the drive ring (240) upward, so that the push rod (521) and the convex ring (610) are misaligned. The inner sidewall of the drive ring (240) is provided with a groove (601) located at the upper end along its circumference. The positioning component includes a positioning block (910) located on the top wall of the processing tank (110). The positioning block (910) has a cavity (1001) with an opening facing the liquid inlet pipe (220). The cavity (1001) has a positioning tongue (920) with one end protruding through it via a third spring (1010). The other end of the positioning tongue (920) has a positioning rod (930) that passes through the positioning block (910). The protruding end of the positioning tongue (920) and the upper side surface have a driving slope (921). The first piston column (310) moves down to press the driving slope (921) so that the positioning block (910) retracts, thereby driving the positioning rod (930) to extend into the slot (601) to position the upward-moving driving ring (240). The power component includes a cylinder (250) for driving the first piston column (310) to move up and down.

2. The aluminum profile anodizing waste acid treatment equipment according to claim 1, characterized in that, The lower end of the treatment tank (110) is provided with a motor (260) for driving the rotating shaft (230) to rotate, and the lower end of the treatment tank (110) is provided with a drain pipe (201) for discharging the waste acid liquid in the treatment tank (110) into the collection chamber (102).

3. A method for treating waste acid from the anodizing of aluminum profiles, characterized in that, The equipment for treating waste acid from aluminum profile anodizing, as described in any one of claims 1-2, specifically includes the following steps: S1. The first piston rod (310) is driven down by the cylinder (250) to close the liquid inlet assembly and add the waste acid liquid to be treated into the filter chamber (101); S2. The cylinder (250) drives the corresponding first piston column (310) to move upward so that the liquid inlet assembly opens. At this time, the waste acid liquid filtered by the filter screen (210) in the filter chamber (101) enters the treatment tank (110). During this process, the motor (260) drives the rotating shaft (230) to rotate so that the dosing assembly adds the agent into the treatment tank (110) at intervals. At the same time, the mixing assembly mixes and stirs the waste acid liquid and the agent in the treatment tank (110). S3. The waste acid liquid entering the treatment tank (110) can drive the float ring (200) to push the drive ring (240) upward. When the float ring (200) pushes the drive ring (240) upward to the top wall of the treatment tank (110), the cylinder (250) drives the first piston column (310) to descend, so that the liquid inlet assembly is closed, so as to complete the quantitative addition of waste acid liquid into the treatment tank (110). At this time, the positioning assembly positions the drive ring (240) so that the rotation of the drive ring (240) will not drive the dosing assembly to open and close intermittently for dosing. At this time, the waste acid liquid is neutralized in the treatment tank (110). S4. Discharge the treated waste acid liquid in the treatment tank (110) into the collection chamber (102) for collection; S5. Repeat steps S2-S4 to better neutralize the waste acid in the filter chamber (101).

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