An electroplating waste treatment device for a water treatment apparatus

Abstract

This invention discloses an electroplating waste treatment device within a water treatment apparatus, relating to the field of wastewater treatment technology. It includes a housing assembly, inside which, from top to bottom, are arranged a pressing assembly for pressurizing and dewatering precipitates, a lifting assembly for raising and lowering a rotary filter assembly, and a rotary filter assembly for centrifugal dewatering of the precipitates. The rotary filter assembly includes a rigid filter membrane A slidably fitted onto the outside of a drive shaft in a vertical direction. A drive slider, slidably fitted onto the inside of a drive groove in a vertical direction, is fixedly disposed on the inner side of the rigid filter membrane A. This invention removes residual wastewater from precipitates through a combination of centrifugal and pressurized dewatering, thereby reducing wastewater residue at precipitate output and avoiding the need for secondary treatment after precipitate output. This simplifies the treatment process, improves efficiency, and reduces the cost of electroplating waste treatment.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an electroplating waste treatment device for a water treatment apparatus. Background Technology

[0002] Electroplating wastewater refers to various types of wastewater generated during the electroplating production process. It mainly originates from the pretreatment of the electroplating process, such as degreasing, pickling, rinsing of electroplating tank solutions, discharge of waste tank solutions, and equipment cleaning. Its composition is complex and contains a variety of toxic and harmful pollutants. If it is discharged directly without treatment, it will pose a serious threat to the environment and human health.

[0003] A search revealed that the invention patent CN114538584B discloses an electroplating wastewater recycling device. This device incorporates a drive coil and a drive magnetic block, along with a drain rod. During waste sedimentation, the downward movement of the purification block generates a repulsive magnetic force between the drive coil and the drive magnetic block, causing the purification block to quickly rise. This rise causes the waste within the purification block to become heavier and sink, increasing the sedimentation rate. The drain rod allows airflow from the treatment tank to slowly escape, reducing the upward movement of sedimented waste due to weightlessness during the recovery process. This cycle repeats, ultimately accelerating the waste sedimentation rate.

[0004] However, when the aforementioned electroplating wastewater recycling equipment completes the sedimentation of electroplating waste and outputs the electroplating waste, it inevitably results in some treated wastewater being output simultaneously with the electroplating waste. This means that after the electroplating waste is output, it still needs secondary treatment to remove the wastewater, increasing the number of treatment steps, affecting the treatment efficiency, and requiring the purchase of additional secondary treatment equipment, thus increasing the treatment cost of electroplating waste.

[0005] Therefore, it is necessary to invent a water treatment device for electroplating waste treatment to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide an electroplating waste treatment device within a water treatment apparatus. This device removes residual wastewater from precipitates through a combination of centrifugal and pressurized dewatering, thereby reducing wastewater residue during precipitate output and avoiding the need for secondary treatment after precipitate output. This simplifies the treatment process, improves efficiency, and reduces the cost of electroplating waste treatment. It addresses the problem mentioned in the background art where existing electroplating wastewater reuse equipment inevitably results in some treated wastewater being output simultaneously with the electroplating waste. This necessitates secondary treatment to remove wastewater after the electroplating waste is output, increasing the number of treatment steps, affecting efficiency, and requiring additional secondary treatment equipment, thus raising the overall cost of electroplating waste treatment.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an electroplating waste treatment device for a water treatment apparatus, comprising a shell assembly, wherein the shell assembly is provided with, from top to bottom, a squeezing assembly for pressurizing and dewatering precipitates, a lifting assembly for driving a rotary filter assembly to rise and fall, and a rotary filter assembly for centrifuging and dewatering precipitates.

[0008] The rotary filter assembly includes a rigid filter membrane A slidably sleeved on the outside of the drive shaft in a vertical direction. A drive slider is fixedly installed on the inside of the rigid filter membrane A and slidably installed on the inside of the drive groove in a vertical direction. An annular baffle is fixedly sleeved on the outside of the rigid filter membrane A. A rigid filter membrane B is fixedly sleeved on the outside of the annular baffle and slidably attached to the inner wall of the lower housing. A rigid filter membrane C is attached to the top of the rigid filter membrane B. An annular magnet B is fixedly installed on the top of the rigid filter membrane C. Multiple guide grooves are opened at the bottom of the rigid filter membrane C, and an elastic connecting mechanism is provided inside any one of the guide grooves.

[0009] Preferably, the elastic connection mechanism includes a limiting pin that is fixedly disposed on the top of the rigid filter membrane B and slidably disposed in the inner side of the adjacent guide groove in the vertical direction.

[0010] Preferably, a return spring is sleeved on the outer side of the limiting pin, and the return spring is located between the inner wall of the guide groove and the limiting pin.

[0011] Preferably, the housing assembly includes a lower housing, and an upper housing is fixedly disposed on the top of the lower housing.

[0012] Preferably, an electroplating wastewater inlet pipe and a chemical reagent inlet pipe are fixedly and continuously installed on the right side of the lower housing from top to bottom.

[0013] Preferably, a wastewater output pipe is fixedly installed through the bottom of the lower shell, and a sedimentation output pipe is fixedly installed through the left side of the lower shell.

[0014] Preferably, the lower housing and the upper housing are nested together by bearings to accommodate a drive shaft, and the drive shaft has a drive groove on its front side along the vertical direction.

[0015] Preferably, the extrusion assembly includes an annular extrusion block and an annular shield fixedly disposed on the top inner side of the lower housing, the annular shield being located outside the annular extrusion block.

[0016] Preferably, an annular magnet A is fixedly sleeved on the outer side of the annular extrusion block, and a limiting cylinder is slidably provided on the inner side of the annular extrusion block in the vertical direction. The horizontal part of the limiting cylinder is attached to the top of the annular extrusion block due to gravity.

[0017] Preferably, the lifting assembly includes a threaded sleeve that is sleeved on the outside of the drive shaft, a lifting plate that is fixedly sleeved on the outside of the threaded sleeve, and guide shafts that slide through the upper housing are fixedly provided on both sides of the top of the lifting plate.

[0018] Preferably, both sides of the bottom of the lifting plate are slidably connected to the traction rods, and the bottom ends of the two traction rods are jointly fixed with an annular movable plate that is rotatably nested on top of the rigid filter membrane A via bearings.

[0019] Preferably, a lower limit collar and an upper limit collar are fixedly sleeved on the outer side of the traction rod from bottom to top. The lower limit collar is located below the lifting plate, and the upper limit collar is attached to the top of the lifting plate.

[0020] Preferably, it also includes a method of using an electroplating waste treatment device within a water treatment apparatus, specifically comprising the following steps:

[0021] S1. Electroplating wastewater and chemical agents used to treat electroplating wastewater are introduced into the inner cavity of the lower shell through the electroplating wastewater inlet pipe and the chemical agent inlet pipe, respectively, and are initially mixed. At this time, the annular baffle blocks the inlet end of the wastewater outlet pipe, so that the electroplating wastewater cannot enter the interior of the wastewater outlet pipe.

[0022] S2. The motor drives the drive shaft to rotate counterclockwise. During this process, the drive shaft drives the threaded sleeve to move downward. When the threaded sleeve moves downward, it drives the lifting plate guided by the guide shaft to move downward along the traction rod, thereby causing the lifting plate to gradually approach the lower limit collar. During this process, the drive shaft drives the drive slider to rotate through the drive groove. When the drive slider rotates, it drives the hard filter membrane A, the annular baffle, the hard filter membrane B, and the hard filter membrane C to rotate synchronously, thereby playing a stirring role and mixing the electroplating wastewater with the chemical agents. During the mixing process, the electroplating wastewater continuously produces precipitates under the action of the chemical agents.

[0023] S3. The motor drives the drive shaft to rotate clockwise. During this process, the drive shaft drives the threaded sleeve to move upward and reset. When the threaded sleeve moves upward, it drives the lifting plate guided by the guide shaft to move upward along the traction rod, thereby making the lifting plate gradually approach the upper limit collar until the top of the lifting plate is in contact with the bottom of the upper limit collar.

[0024] S4. As the lifting plate continues to move upward, the lifting plate drives the traction rod to move upward through the upper limit collar. When the traction rod moves upward, it drives the rigid filter membrane A, the annular baffle, the rigid filter membrane B, and the rigid filter membrane C to move upward through the annular movable plate. At this time, the annular baffle no longer blocks the inlet end of the wastewater outlet pipe. The treated wastewater passes through the rigid filter membrane A and the rigid filter membrane B and enters the bottom of the inner cavity of the lower shell. Then it is output through the wastewater outlet pipe. The sediment is blocked by the rigid filter membrane A, the rigid filter membrane B, and the rigid filter membrane C, and thus remains in the first container composed of the rigid filter membrane A, the annular baffle, the rigid filter membrane B, and the rigid filter membrane C.

[0025] S5. After the rigid filter membrane B moves the rigid filter membrane C to the upper part of the inner cavity of the lower shell, the inner diameter of the lower shell increases. At this time, the rigid filter membrane C no longer adheres to the inner wall of the lower shell. Meanwhile, as the first container rotates continuously, the sediment adheres to the inner wall of the rigid filter membrane C under centrifugal action. At the same time, the residual wastewater passes through the rigid filter membrane C under centrifugal action and is output.

[0026] S6. As the first container moves upward, it moves to the inside of the annular shield. The bottom of the limiting cylinder is in contact with the top of the annular baffle. At this time, the limiting cylinder, the annular baffle, the rigid filter membrane B and the rigid filter membrane C form the second container. The sediment gathers inside the second container due to centrifugal force. Subsequently, as the second container moves upward, the annular extrusion block pressurizes the sediment in the second container, thereby causing the residual wastewater to be discharged through the annular baffle and the rigid filter membrane C until the top of the annular magnet B is in contact with the bottom of the annular magnet A and adsorbs.

[0027] S7. The motor drives the drive shaft to rotate counterclockwise again. During this process, the drive shaft drives the threaded sleeve to move down until the bottom of the lifting plate is in contact with the top of the lower limit collar. During this process, the second container remains in a squeezed state. Subsequently, as the threaded sleeve continues to move down, the lifting plate pushes the traction rod down through the lower limit collar. When the traction rod moves down, it drives the rigid filter membrane A, the annular baffle and the rigid filter membrane B down through the annular movable plate.

[0028] S8. Because the annular magnet B is attracted by the annular magnet A, the rigid filter membrane C cannot move down synchronously. Therefore, when the rigid filter membrane B moves down, it is separated from the bottom of the rigid filter membrane C. At the same time, the limiting pin is driven by the rigid filter membrane B to descend inside the guide groove. At this time, a sediment output channel is formed between the rigid filter membrane B and the rigid filter membrane C. Subsequently, as the rigid filter membrane B continues to rotate, the sediment enters the sediment output tube and is discharged under centrifugal force.

[0029] S9. As the threaded sleeve continues to move downward, the return spring is compressed to its extreme value. Subsequently, as the threaded sleeve continues to move downward, the annular magnet B disengages from the bottom of the annular magnet A. At this point, the rotating filter assembly returns to its original position. After the hard filter membrane A, the annular baffle, and the hard filter membrane B re-adhere to the bottom of the lower housing cavity, the power is turned off.

[0030] The technical effects and advantages of this invention are as follows:

[0031] This invention incorporates a rotating filter assembly. When the lifting assembly moves the continuously rotating filter assembly upwards, it collects sediment. Once the rotating filter assembly reaches the upper part of the lower housing cavity, it centrifuges the sediment to remove water, simultaneously bringing the sediment to a pressurized dewatering station. This allows the rotating filter assembly to work with the squeezing assembly to perform pressurized dewatering. After pressurized dewatering, the lifting assembly moves the rotating filter assembly downwards to its original position. During this process, the squeezing assembly works with the rotating filter assembly to actively output the sediment. Compared to existing technologies, this invention removes residual wastewater from the sediment through a combination of centrifugal and pressurized dewatering, thereby reducing wastewater residue during sediment output and avoiding the need for secondary treatment after sediment output. This simplifies the processing steps, improves processing efficiency, and reduces the cost of electroplating waste treatment. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0033] Figure 2 This is a three-dimensional structural diagram of the housing assembly of the present invention;

[0034] Figure 3 This is a three-dimensional structural diagram of the extrusion assembly of the present invention;

[0035] Figure 4 This is a three-dimensional structural diagram of the lifting component of the present invention;

[0036] Figure 5 This is a three-dimensional structural diagram of the rotating filter assembly of the present invention.

[0037] In the diagram: 1. Outer shell assembly; 11. Lower shell; 12. Upper shell; 13. Electroplating wastewater inlet pipe; 14. Chemical reagent inlet pipe; 15. Wastewater outlet pipe; 16. Sediment outlet pipe; 17. Drive shaft; 18. Drive chute; 19. Motor; 2. Extrusion assembly; 21. Annular extrusion block; 22. Annular shield; 23. Annular magnet A; 24. Limiting cylinder; 3. Lifting assembly; 31. Threaded sleeve; 32. Lifting plate; 33. Guide shaft; 34. Traction rod; 35. Annular movable plate; 36. Lower limit collar; 37. Upper limit collar; 4. Rotary filter assembly; 41. Rigid filter membrane A; 42. Drive slider; 43. Annular baffle; 44. Rigid filter membrane B; 45. Rigid filter membrane C; 46. Annular magnet B; 47. Guide chute; 48. Limiting pin; 49. Return spring. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] This invention provides, for example Figures 1-5 The electroplating waste treatment device shown is designed to address the core objectives of efficient water removal, simplified processes, and cost reduction. It employs a two-stage dewatering process combining centrifugal dewatering and pressurized dewatering. Through the coordinated operation of the outer shell assembly 1, the extrusion assembly 2, the lifting assembly 3, and the rotary filter assembly 4, it overcomes the shortcomings of traditional electroplating wastewater treatment equipment, such as water-carrying sediment output and the need for secondary treatment. The components are arranged in layers from top to bottom, ensuring space utilization and achieving fully automated connection of the entire process from "mixing reaction - centrifugal dewatering - pressurized dewatering - sedimentation output," thus avoiding efficiency losses and secondary pollution risks caused by manual intervention.

[0040] like Figure 2As shown, the outer casing assembly 1 includes a lower casing 11, with an upper casing 12 fixedly mounted on the top of the lower casing 11. The two are connected by bolts, and a sealing ring is installed at the connection to prevent wastewater leakage. The lower casing 11 has a stepped cylindrical structure that is narrow at the bottom and wide at the top. The narrow section at the bottom is used for the mixing reaction of wastewater and reagents, while the wide section at the top provides sufficient space for centrifugal dewatering. The upper casing 12 is a cylindrical cavity that houses the drive structure of the lifting assembly 3. A sliding hole for the guide shaft 33 is reserved at the top to ensure smooth lifting. On the right side, from top to bottom, an electroplating wastewater inlet pipe 13 and a chemical reagent inlet pipe 14 are fixedly and continuously installed. A wastewater outlet pipe 15 is fixedly and continuously installed at the bottom of the lower housing 11. A sedimentation outlet pipe 16 is fixedly and continuously installed on the left side of the lower housing 11. The lower housing 11 and the upper housing 12 are coaxially connected by a double bearing-driven drive shaft 17. The drive shaft 17 has a drive groove 18 on its front side along the vertical direction, which can drive the rotating filter assembly 4 to rotate synchronously and also allow it to slide in the vertical direction, realizing a "rotation + lifting" composite motion.

[0041] By setting up the above structure, the electroplating wastewater and the chemical agents used to treat the electroplating wastewater are introduced into the inner cavity of the lower shell 11 through the electroplating wastewater inlet pipe 13 and the chemical agent inlet pipe 14 respectively, so that they can be initially mixed. After the electroplating wastewater treatment is completed, the treated wastewater is discharged through the wastewater outlet pipe 15, and the precipitate is discharged through the sediment outlet pipe 16.

[0042] like Figure 3 As shown, the extrusion assembly 2 includes an annular extrusion block 21 and an annular shield 22 fixedly disposed on the top inner side of the lower housing 11. The annular shield 22 is located outside the annular extrusion block 21. The annular extrusion block 21 is made of 304 stainless steel with a chrome-plated surface, which is both wear-resistant and corrosion-resistant. The annular shield 22 is made of transparent acrylic, which prevents wastewater from splashing during the extrusion process and facilitates observation of the internal sediment. The bottom of the annular shield 22 is sealed to the inner wall of the lower housing 11, and the top is reserved with a sliding gap for the limiting cylinder 24 to ensure smooth lifting and lowering of the limiting cylinder 24. An annular magnet A23, made of neodymium iron boron strong magnetic material, is fixedly sleeved on the outside of the annular extrusion block 21, and interacts with the annular magnet of the rotating filter assembly 4. The magnets B46 have opposite magnetic properties. When the two are in contact, the adsorption force can reach 500N. This can fix the position of the rotating filter component 4 to ensure stable extrusion pressure, and can also achieve component reset by disengaging the magnet during the sediment output stage. A limiting cylinder 24 is slidably provided on the inner side of the annular extrusion block 21 in the vertical direction. The horizontal part of the limiting cylinder 24 is in contact with the top of the annular extrusion block 21 due to gravity. The limiting cylinder 24 is made of lightweight aluminum alloy. Its horizontal part is naturally in contact with the top of the annular extrusion block 21 due to gravity. When it moves down, it can be in contact with the top of the annular baffle 43 to form a closed "second container" to prevent sediment from leaking out during the extrusion process. At the same time, the height of the vertical part of the limiting cylinder 24 can be adjusted according to the amount of sediment to adapt to different processing conditions.

[0043] By setting up the above structure, the first container moves to the inside of the annular shield 22 as it moves upward continuously, and the bottom of the limiting cylinder 24 is in contact with the top of the annular baffle 43. At this time, the limiting cylinder 24, the annular baffle 43, the rigid filter membrane B44 and the rigid filter membrane C45 form the second container. The sediment gathers inside the second container due to centrifugal force. Subsequently, as the second container moves upward continuously, the annular extrusion block 21 pressurizes the sediment in the second container, thereby allowing the residual wastewater to be discharged through the annular baffle 43 and the rigid filter membrane C45, thereby realizing the pressurized dewatering operation of the sediment.

[0044] like Figure 4 As shown, the lifting assembly 3 includes a threaded sleeve 31 that is sleeved on the outside of the drive shaft 17 and connected to the drive shaft 17 via a trapezoidal thread with a thread lead of 10mm. This provides high transmission efficiency and good self-locking performance, preventing the assembly from falling when power is off. A lifting plate 32, a circular steel plate made of Q235 steel and coated with anti-rust paint, is fixedly sleeved on the outside of the threaded sleeve 31. Guide shafts 33 are symmetrically fixed on both sides of the top of the lifting plate 32. The guide shafts 33 are clearance-fitted with the guide holes of the upper housing 12 with a clearance of 0.1mm, which effectively counteracts radial sway during the lifting process and ensures smooth lifting. The bottom sides of the lifting plate 32 are slidably connected to the traction rods 34, which are two circular rods. A cylindrical optical axis symmetrically passes through the guide hole of the lifting plate 32. The bottom ends of the two traction rods 34 are jointly fixed with an annular movable plate 35, which is nested on the top of the rigid filter membrane A41 through a bearing. The plate is an annular steel plate, and its inner side is rotatably connected to the top of the rigid filter membrane A41 through a bearing. This transmits lifting power without affecting the rotation of the rotating filter assembly 4. The bearing is a sealed deep groove ball bearing, model 6205, which can prevent wastewater from entering the bearing and causing jamming. The outer side of the traction rod 34 is fixedly sleeved with a lower limit collar 36 and an upper limit collar 37 from bottom to top. The lower limit collar 36 is located below the lifting plate 32, and the upper limit collar 37 is attached to the top of the lifting plate 32.

[0045] By setting the above structure, the motor 19 drives the drive shaft 17 to rotate counterclockwise. During this process, the drive shaft 17 drives the threaded sleeve 31 to move downward. When the threaded sleeve 31 moves downward, it drives the lifting plate 32, which is guided by the guide shaft 33, to move downward along the traction rod 34, thereby causing the lifting plate 32 to gradually approach the lower limiting collar 36.

[0046] So that the motor 19 can drive the drive shaft 17 to rotate clockwise. During this process, the drive shaft 17 drives the threaded sleeve 31 to move upward and reset. When the threaded sleeve 31 moves upward, it drives the lifting plate 32, which is guided by the guide shaft 33, to move upward along the traction rod 34, thereby making the lifting plate 32 gradually approach the upper limit collar 37 until the top of the lifting plate 32 is in contact with the bottom of the upper limit collar 37.

[0047] like Figure 5 As shown, the rotary filter assembly 4 includes a rigid filter membrane A41, which is vertically slidably sleeved on the outside of the drive shaft 17. The membrane is made of ceramic composite material with a pore size of 0.1-0.2 μm, capable of blocking sediment while allowing treated water to pass through smoothly. A drive slider 42, which is vertically slidably sleeved on the inside of the rigid filter membrane A41 and located inside the drive groove 18, is fixedly sleeved on the outside of the rigid filter membrane A41. An annular baffle 43, made of annular steel plate, is fixed between the rigid filter membrane A41 and the rigid filter membrane B44. It is made of 304 stainless steel with a thickness of 5 mm and serves both as a separator and support. When its bottom is attached to the bottom of the lower housing 11, it can seal the inlet of the wastewater outlet pipe 15 to prevent wastewater leakage during the mixing stage. When it rises, it opens the channel to allow clean water to drain. A rigid filter membrane B44, made of stainless steel sintered mesh, is fixedly sleeved on the outside of the annular baffle 43 and slidably attached to the inner wall of the lower housing 11. The rigid filter membrane has a pore size of 0.05-0.1μm. A rigid filter membrane C45, made of the same material as the rigid filter membrane B44, is attached to the top of the rigid filter membrane B44. An annular magnet B46 is fixedly installed on the top of the rigid filter membrane C45. Multiple guide grooves 47 are opened at the bottom of the rigid filter membrane C45. Each guide groove 47 is equipped with an elastic connection mechanism. The elastic connection mechanism includes a limiting pin 48 fixedly installed on the top of the rigid filter membrane B44 and slidably installed in the inner side of the adjacent guide groove 47 in the vertical direction. A return spring 49 is sleeved on the outside of the limiting pin 48. The return spring 49 is located between the inner wall of the guide groove 47 and the limiting pin 48. In the initial state, the spring is in a natural extension state, so that the rigid filter membrane B44 and the rigid filter membrane C45 are tightly attached. When the rigid filter membrane B44 moves down, the spring is compressed to form a sedimentation output channel. The channel width can be adjusted by the spring compression to adapt to sediments of different particle sizes.

[0048] By setting up the above structure, the annular baffle 43 can be used to block the inlet of the wastewater outlet pipe 15, preventing electroplating wastewater from entering the interior of the wastewater outlet pipe 15 and thus avoiding sedimentation inside the wastewater outlet pipe 15.

[0049] So that the drive shaft 17 can drive the drive slider 42 to rotate through the drive slide groove 18. When the drive slider 42 rotates, it drives the hard filter membrane A41, the annular baffle 43, the hard filter membrane B44 and the hard filter membrane C45 to rotate synchronously, thereby playing a stirring role and mixing the electroplating wastewater with the chemical agents. During the mixing process, the electroplating wastewater continuously produces precipitates under the action of the chemical agents, thereby achieving the treatment of electroplating wastewater.

[0050] So that after the rigid filter membrane B44 moves the rigid filter membrane C45 to the upper part of the inner cavity of the lower housing 11, the inner diameter of the lower housing 11 increases, and the rigid filter membrane C45 no longer adheres to the inner wall of the lower housing 11. At the same time, as the first container rotates continuously, the precipitate adheres to the inner wall of the rigid filter membrane C45 under centrifugal action, while the residual wastewater passes through the rigid filter membrane C45 under centrifugal action and is output, thereby realizing the centrifugal dewatering operation of the precipitate. At the same time, the precipitate reaches the pressurized dewatering station to facilitate subsequent pressurized dewatering operation.

[0051] So that when the traction rod 34 moves down, it can drive the rigid filter membrane A41, the annular baffle 43 and the rigid filter membrane B44 to move down through the annular movable plate 35. Since the annular magnet B46 is attracted by the annular magnet A23, the rigid filter membrane C45 cannot move down synchronously. Therefore, when the rigid filter membrane B44 moves down, it is separated from the bottom of the rigid filter membrane C45. At the same time, the limiting pin 48 is driven by the rigid filter membrane B44 and descends inside the guide groove 47. At this time, a sediment output channel is formed between the rigid filter membrane B44 and the rigid filter membrane C45. Subsequently, as the rigid filter membrane B44 continues to rotate, the sediment enters the sediment output pipe 16 under centrifugal force and is discharged, thereby realizing the active output of sediment.

[0052] The present invention also provides a method for using an electroplating waste treatment device within a water treatment apparatus, specifically comprising the following steps:

[0053] S1. Electroplating wastewater and chemical agents used to treat electroplating wastewater are introduced into the inner cavity of the lower shell 11 through the electroplating wastewater inlet pipe 13 and the chemical agent inlet pipe 14, respectively, and are initially mixed. At this time, the annular baffle 43 blocks the inlet end of the wastewater outlet pipe 15, and the electroplating wastewater cannot enter the interior of the wastewater outlet pipe 15.

[0054] S2. Motor 19 drives drive shaft 17 to rotate counterclockwise. During this process, drive shaft 17 drives threaded sleeve 31 to move downward. When threaded sleeve 31 moves downward, it drives lifting plate 32, which is guided by guide shaft 33, to move downward along traction rod 34. This causes lifting plate 32 to gradually approach lower limit collar 36. During this process, drive shaft 17 drives drive slider 42 to rotate through drive slide groove 18. When drive slider 42 rotates, it drives hard filter membrane A41, annular baffle 43, hard filter membrane B44 and hard filter membrane C45 to rotate synchronously, thereby playing a stirring role and mixing electroplating wastewater with chemical agents. During the mixing process, electroplating wastewater continuously produces precipitates under the action of chemical agents.

[0055] S3, the motor 19 drives the drive shaft 17 to rotate clockwise. During this process, the drive shaft 17 drives the threaded sleeve 31 to move upward and reset. When the threaded sleeve 31 moves upward, it drives the lifting plate 32, which is guided by the guide shaft 33, to move upward along the traction rod 34, thereby causing the lifting plate 32 to gradually approach the upper limit collar 37 until the top of the lifting plate 32 is in contact with the bottom of the upper limit collar 37.

[0056] S4. As the lifting plate 32 continues to move upward, the lifting plate 32 drives the traction rod 34 to move upward through the upper limit collar 37. When the traction rod 34 moves upward, it drives the rigid filter membrane A41, the annular baffle 43, the rigid filter membrane B44, and the rigid filter membrane C45 to move upward through the annular movable plate 35. At this time, the annular baffle 43 no longer blocks the input end of the wastewater output pipe 15. The treated wastewater passes through the rigid filter membrane A41 and the rigid filter membrane B44 and enters the bottom of the inner cavity of the lower shell 11. Then it is output through the wastewater output pipe 15. The sediment is blocked by the rigid filter membrane A41, the rigid filter membrane B44, and the rigid filter membrane C45, and then remains in the first container composed of the rigid filter membrane A41, the annular baffle 43, the rigid filter membrane B44, and the rigid filter membrane C45.

[0057] S5. After the rigid filter membrane B44 moves the rigid filter membrane C45 to the upper part of the inner cavity of the lower housing 11, the inner diameter of the lower housing 11 increases. At this time, the rigid filter membrane C45 no longer adheres to the inner wall of the lower housing 11. Meanwhile, as the first container rotates continuously, the sediment adheres to the inner wall of the rigid filter membrane C45 under centrifugal force, and the residual wastewater passes through the rigid filter membrane C45 under centrifugal force and is output.

[0058] S6. As the first container moves upward, it moves to the inside of the annular shield 22. The bottom of the limiting cylinder 24 is in contact with the top of the annular baffle 43. At this time, the limiting cylinder 24, the annular baffle 43, the rigid filter membrane B44 and the rigid filter membrane C45 form the second container. The sediment gathers inside the second container due to centrifugal force. Subsequently, as the second container moves upward, the annular extrusion block 21 pressurizes the sediment in the second container, thereby causing the residual wastewater to be discharged through the annular baffle 43 and the rigid filter membrane C45 until the top of the annular magnet B46 is in contact with the bottom of the annular magnet A23 and adsorbs.

[0059] S7, the motor 19 drives the drive shaft 17 to rotate counterclockwise again. During this process, the drive shaft 17 drives the threaded sleeve 31 to move down until the bottom of the lifting plate 32 is in contact with the top of the lower limit collar 36. During this process, the second container remains in a squeezed state. Subsequently, as the threaded sleeve 31 continues to move down, the lifting plate 32 pushes the traction rod 34 down through the lower limit collar 36. When the traction rod 34 moves down, it drives the rigid filter membrane A41, the annular baffle 43 and the rigid filter membrane B44 down through the annular movable plate 35.

[0060] S8. Because the annular magnet B46 is attracted by the annular magnet A23, the rigid filter membrane C45 cannot move down synchronously. Therefore, when the rigid filter membrane B44 moves down, it is separated from the bottom of the rigid filter membrane C45. At the same time, the limiting pin 48 descends inside the guide groove 47 under the action of the rigid filter membrane B44. At this time, a sediment output channel is formed between the rigid filter membrane B44 and the rigid filter membrane C45. Subsequently, as the rigid filter membrane B44 continues to rotate, the sediment enters the sediment output pipe 16 and is discharged under the action of centrifugation.

[0061] S9. As the threaded sleeve 31 continues to move downward, the return spring 49 is compressed to its extreme value. Subsequently, as the threaded sleeve 31 continues to move downward, the annular magnet B46 disengages from the bottom of the annular magnet A23. At this time, the rotating filter assembly 4 returns to its original position. Subsequently, after the hard filter membrane A41, the annular baffle 43, and the hard filter membrane B44 are once again attached to the bottom of the inner cavity of the lower housing 11, the motor 19 is turned off.

[0062] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electroplating waste treatment device for a water treatment apparatus, characterized in that: The housing assembly (1) includes, from top to bottom, a pressing assembly (2) for pressurizing and dewatering the sediment, a lifting assembly (3) for driving the rotary filter assembly (4) to rise and fall, and a rotary filter assembly (4) for centrifugal dewatering the sediment. The outer shell assembly (1) includes a lower shell (11), which is a stepped cylindrical structure that is narrow at the bottom and wide at the top; The extrusion assembly (2) includes an annular extrusion block (21) and an annular shield (22) fixedly disposed on the top of the inner side of the lower housing (11). A limit cylinder (24) is slidably disposed on the inner side of the annular extrusion block (21) in the vertical direction. The rotary filter assembly (4) includes a rigid filter membrane A (41) that is slidably sleeved on the outside of the drive shaft (17) in the vertical direction. A drive slider (42) that is slidably sleeved on the inside of the drive groove (18) in the vertical direction is fixedly installed on the inside of the rigid filter membrane A (41). An annular baffle (43) is fixedly sleeved on the outside of the rigid filter membrane A (41). A rigid filter membrane B (44) that is slidably attached to the inner wall of the lower housing (11) is fixedly sleeved on the outside of the annular baffle (43). A rigid filter membrane C (45) is attached to the top of the rigid filter membrane B (44). An annular magnet B (46) is fixedly installed on the top of the rigid filter membrane C (45). A plurality of guide grooves (47) are opened at the bottom of the rigid filter membrane C (45). An elastic connection mechanism is provided inside any one of the guide grooves (47). The rigid filter membrane A (41), the annular baffle (43), the rigid filter membrane B (44), and the rigid filter membrane C (45) form the first container. The first container moves to the inside of the annular shield (22), and the bottom of the limiting cylinder (24) is in contact with the top of the annular baffle (43). At this time, the limiting cylinder (24), the annular baffle (43), the rigid filter membrane B (44), and the rigid filter membrane C (45) form the second container. The annular extrusion block (21) pressurizes the precipitate in the second container.

2. The electroplating waste treatment device of the water treatment apparatus according to claim 1, characterized in that: The elastic connection mechanism includes a limiting pin (48) fixedly disposed on the top of the rigid filter membrane B (44) and slidably disposed in the inner side of the adjacent guide groove (47) in the vertical direction.

3. The electroplating waste treatment device of the water treatment apparatus according to claim 2, characterized in that: A reset spring (49) is sleeved on the outside of the limiting pin (48), and the reset spring (49) is located between the inner wall of the guide groove (47) and the limiting pin (48).

4. The electroplating waste treatment device of the water treatment apparatus according to claim 3, characterized in that: The upper shell (12) is fixedly installed on the top of the lower shell (11).

5. The electroplating waste treatment device of the water treatment apparatus according to claim 4, characterized in that: The lower housing (11) has an electroplating wastewater inlet pipe (13) and a chemical reagent inlet pipe (14) fixedly installed from top to bottom on the right side.

6. The electroplating waste treatment device of the water treatment apparatus according to claim 5, characterized in that: Wastewater output pipe (15) is fixedly installed through the bottom of the lower shell (11), and sedimentation output pipe (16) is fixedly installed through the left side of the lower shell (11).

7. The electroplating waste treatment device of the water treatment apparatus according to claim 6, characterized in that: The lower housing (11) and the upper housing (12) are nested together by bearings and a drive shaft (17) is provided. The drive shaft (17) has a drive groove (18) on its front side along the vertical direction.

8. The electroplating waste treatment device of the water treatment apparatus according to claim 7, characterized in that: The annular shield (22) is located outside the annular extrusion block (21).

9. The electroplating waste treatment device of the water treatment apparatus according to claim 8, characterized in that: An annular magnet A (23) is fixedly sleeved on the outside of the annular extrusion block (21), and the horizontal part of the limiting cylinder (24) is attached to the top of the annular extrusion block (21) due to gravity.

10. The electroplating waste treatment device of the water treatment apparatus according to claim 9, characterized in that: The lifting assembly (3) includes a threaded sleeve (31) that is sleeved on the outside of the drive shaft (17). A lifting plate (32) is fixedly sleeved on the outside of the threaded sleeve (31). Guide shafts (33) that slide through the upper housing (12) are fixedly installed on both sides of the top of the lifting plate (32).

11. The electroplating waste treatment device of the water treatment apparatus according to claim 10, characterized in that: The lifting plate (32) is slidably installed on both sides of the bottom of the traction rod (34), and the bottom ends of the two traction rods (34) are fixedly provided with an annular movable plate (35) that is nested on the top of the rigid filter membrane A (41) by rotating through the bearing.

12. The electroplating waste treatment device of the water treatment apparatus according to claim 11, characterized in that: The lower limit collar (36) and the upper limit collar (37) are fixedly sleeved on the outside of the traction rod (34) from bottom to top. The lower limit collar (36) is located below the lifting plate (32), and the upper limit collar (37) is attached to the top of the lifting plate (32).

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