Anode oxidation waste acid purification and recovery membrane separation equipment

Abstract

This utility model discloses a membrane separation device for the purification and recovery of anodic oxidation waste acid. This membrane separation device aims to solve the technical problem that existing cleaning methods require disassembly and cleaning, which is time-consuming, labor-intensive, and can delay the process. It includes a circular shell with an end cap mounted on its left end. A filter membrane is mounted on the side wall of the end cap within the inner cavity of the shell. An inlet pipe is fixedly connected to the side wall of the shell near the right end, and an outlet pipe is fixedly connected to the left end face of the end cap, communicating with the filter membrane. A cleaning assembly is provided within the inner cavity of the end cap. The cleaning assembly includes a fixed plate fixedly connected to the inner wall of the end cap, with a movable plate rotatably connected to one side of the fixed plate. This utility model removes contaminants from the surface and pores of the filter membrane through instantaneous pressure fluctuations and water flow impacts, making it more efficient than traditional rinsing methods.

Description

Technical Field

[0001] This utility model belongs to the technical field of membrane separation equipment, specifically relating to a membrane separation device for the purification and recovery of anodic oxidation waste acid. Background Technology

[0002] Membrane separation equipment for the purification and recovery of waste acid from anodizing mainly utilizes the selective permeability of membranes to separate and recover acids and metal ions. A high-pressure pump forces waste acid water through the membrane, allowing acid molecules (such as sulfuric acid and phosphoric acid) and water molecules to pass through the membrane into the product water side, while metal ions (such as aluminum, magnesium, and iron) and macromolecular pollutants are retained, thus achieving acid concentration and recovery.

[0003] However, after long-term use, the filter membranes in current membrane separation equipment will have a lot of impurities adhering to their surface, making it difficult for micro-molecules to penetrate the filter membrane and affecting the filtration effect. The usual cleaning method requires disassembly and cleaning, which is time-consuming and laborious, and will delay the process and is not conducive to use.

[0004] Therefore, a membrane separation device for the purification and recovery of anodic oxidation waste acid was designed to overcome the above-mentioned technical defects. Utility Model Content

[0005] (1) Technical problems to be solved

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a membrane separation device for the purification and recovery of anodic oxidation waste acid. This membrane separation device aims to solve the technical problem that the conventional cleaning method under the existing technology requires disassembly and cleaning, which is time-consuming and labor-intensive, and will delay the process.

[0007] (2) Technical solution

[0008] To solve the above-mentioned technical problems, this utility model provides a membrane separation device for the purification and recovery of anodic oxidation waste acid, including a circular shell, an end cap assembled at the left end of the circular shell, a filter membrane assembled on the side wall of the end cap located in the inner cavity of the circular shell, an inlet pipe fixedly connected to the side wall of the circular shell near the right end, an outlet pipe fixedly connected to the left end face of the end cap, the outlet pipe communicating with the filter membrane, and a cleaning component provided in the inner cavity of the end cap.

[0009] Furthermore, the cleaning component includes a fixed plate fixedly connected to the inner wall of the end cap, a movable plate rotatably connected to one side of the fixed plate, and several through holes respectively opened on the side walls of the fixed plate and the movable plate, with the through holes on both sides facing each other, and a transmission component provided on the side wall of the movable plate.

[0010] Furthermore, a water injection pipe is fixedly connected to the side wall of the end cap near the left end. The area between the fixing plate and the inner wall of the end cap is the water pressure zone. The water injection pipe is connected to the water pressure zone. A drain pipe is fixedly connected to the right end face of the round shell.

[0011] Furthermore, the transmission assembly includes a mounting plate fixedly connected to the side wall of the end cover, a motor fixedly connected to the side wall of the mounting plate, a worm fixedly connected to the output shaft of the motor, the worm passing through the end cover and rotatably connected thereto, and an annular worm wheel fixedly connected to the side wall of the movable plate, with the worm meshing with the annular worm wheel.

[0012] Furthermore, a sealing ring is fixedly connected to the left side wall of the movable plate, and a sealing groove is opened on the right side wall of the fixed plate, with the sealing ring and the sealing groove being rotatably connected.

[0013] Furthermore, valves are installed on the side walls of the water inlet pipe, water injection pipe, and sewage discharge pipe.

[0014] Furthermore, the round shell and the end cap are connected by threads.

[0015] Furthermore, the filter membrane is detachably connected to the end cap and the round shell.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention utilizes a design of a round shell, end caps, filter membrane, and cleaning components to periodically rinse the filter membrane surface using the water hammer effect. Through instantaneous pressure fluctuations and water flow impacts, it removes contaminants from the filter membrane surface and pores, making it more efficient than traditional rinsing methods. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the left oblique view structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the right oblique view structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the end cap structure of this utility model;

[0022] Figure 4 This is a structural schematic diagram of the cleaning component of this utility model in its assembled state;

[0023] Figure 5 This is a right oblique view of the structure of the cleaning component of this utility model in a disassembled state;

[0024] Figure 6 This is a left oblique view of the structure of the cleaning component of this utility model in a disassembled state;

[0025] Figure 7 This is a front sectional view of the present invention.

[0026] The markings in the attached diagram are as follows: 1. Round shell; 2. End cap; 3. Filter membrane; 4. Inlet pipe; 5. Outlet pipe; 6. Sewage pipe; 7. Fixed plate; 8. Movable plate; 9. Through hole; 10. Water injection pipe; 11. Mounting plate; 12. Motor; 13. Worm gear; 14. Sealing ring; 15. Sealing groove; 16. Valve; 17. Annular worm gear. Detailed Implementation

[0027] This specific embodiment is a membrane separation device for the purification and recovery of anodic oxidation waste acid, and its structural schematic diagram is shown below. Figures 1-7 As shown, it includes a circular shell 1, an end cap 2 is assembled on the left end of the circular shell 1, a filter membrane 3 is assembled on the side wall of the end cap 2 in the inner cavity of the circular shell 1, an inlet pipe 4 is fixedly connected to the side wall of the circular shell 1 near the right end, an outlet pipe 5 is fixedly connected to the left end face of the end cap 2, the outlet pipe 5 is connected to the filter membrane 3, and a cleaning component is provided in the inner cavity of the end cap 2.

[0028] like Figures 4-6 As shown, the cleaning assembly includes a fixed plate 7 fixedly connected to the inner wall of the end cap 2. A movable plate 8 is rotatably connected to one side of the fixed plate 7. Several through holes 9 are respectively opened on the side walls of the fixed plate 7 and the movable plate 8, with the through holes 9 on both sides facing each other. A transmission assembly is provided on the side wall of the movable plate 8. By setting up the cleaning assembly, a water hammer effect can be formed. The impact force of the water hammer effect is used to clean the filter membrane 3. The high-pressure wave can impact the contaminants (such as colloids, suspended solids, and microbial mucus) on the surface of the filter membrane 3, causing them to fall off. The negative pressure wave creates a momentary vacuum in a local area, causing the contaminants in the pores of the filter membrane 3 to be "sucked out". At the same time, the sudden change in the direction of water flow (such as forward and reverse impact) can enhance the cleaning effect.

[0029] like Figure 7 As shown, a water injection pipe 10 is fixedly connected to the side wall of end cap 2 near the left end. The area between the fixing plate 7 and the inner wall of end cap 2 is the water pressure zone, and the water injection pipe 10 is connected to the water pressure zone. A drain pipe 6 is fixedly connected to the right end face of the round shell 1. During the cleaning process, the drain pipe 6 can be used to discharge the impurities washed down, so that the internal pressure of the round shell 1 is in a suitable state, ensuring that the impact generated by the water hammer effect can achieve the purpose of rinsing.

[0030] like Figure 4 As shown, the transmission assembly includes a mounting plate 11 fixedly connected to the side wall of the end cover 2. A motor 12 is fixedly connected to the side wall of the mounting plate 11. A worm gear 13 is fixedly connected to the output shaft of the motor 12. The worm gear 13 passes through the end cover 2 and is rotatably connected to it. An annular worm wheel 17 is fixedly connected to the side wall of the movable plate 8. The worm gear 13 meshes with the annular worm wheel 17.

[0031] The worm gear 13 and the annular worm wheel 17 structure used in the transmission component are existing mature technologies. The forward and reverse rotation of the movable plate 8 can be controlled by the forward and reverse rotation of the motor 12. The water hammer effect is achieved by the staggered closing and connecting opening of the through holes 9 on both sides.

[0032] like Figure 5 and Figure 6 As shown, a sealing ring 14 is fixedly connected to the left side wall of the movable plate 8, and a sealing groove 15 is provided on the right side wall of the fixed plate 7. The sealing ring 14 and the sealing groove 15 are rotatably connected. The cooperation between the sealing ring 14 and the sealing groove 15 can increase the sealing between the fixed plate 7 and the movable plate 8, and prevent leakage caused by water pressure, which would affect the cleaning effect.

[0033] like Figure 7 As shown, valves 16 are installed on the side walls of the water inlet pipe 4, the water injection pipe 10, and the sewage discharge pipe 6. Valves 16 can be electric valves, solenoid valves, manual valves, etc., and are not specifically limited in this design; they can be selected according to requirements.

[0034] like Figure 2 and Figure 3 As shown, the circular shell 1 and the end cap 2 are connected by threads. This facilitates the later disassembly of the end cap 2 and the removal of the filter membrane 3 for maintenance or replacement. The threaded connection also provides good sealing and pressure resistance.

[0035] like Figure 7 As shown, the filter membrane 3 is detachably connected to the end cap 2 and the circular shell 1. The filter membrane 3 can be connected by other methods such as plug-in, snap-fit, or threaded connection, making subsequent replacement more convenient.

[0036] Working principle: First, connect the inlet pipe 4 to the waste acid pipe and the outlet pipe 5 to the clean water pipe. Then, use a pressure pump to discharge the wastewater to be purified into the round shell 1. Under pressure, the waste acid causes clean molecules to pass through the filter membrane 3 and be discharged from the outlet pipe 5, while impurities adhere to the filter membrane 3.

[0037] When the filter membrane 3 needs to be cleaned, the water injection pipe 10 is connected to an external pressure facility, and water is injected. The water flow gathers in the water pressure zone, and then the motor 12 is started intermittently, causing the motor 12 to quickly rotate forward and backward. The output shaft of the motor 12 drives the worm gear 13 to rotate, and the worm gear 13 meshes with the annular worm wheel 17, thereby driving the movable plate 8 to rotate. When the movable plate 8 is connected to the through hole 9 on the fixed plate 7, the water flow in the water pressure zone is quickly discharged from the through hole 9 under pressure. At the same time, the motor 12 quickly reverses, causing the through holes 9 on both sides to be closed alternately. The high-pressure water flow is discharged intermittently, forming a water hammer effect. Through the instantaneous pressure fluctuation and water flow impact, the pollutants on the surface and in the pores of the filter membrane 3 are removed, which is more efficient than the traditional flushing method.

[0038] All technical features in this embodiment can be freely combined according to actual needs.

[0039] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A membrane separation device for purifying and recovering waste acid from anodizing, comprising a cylindrical shell (1), characterized in that: The left end of the round shell (1) is fitted with an end cap (2), and the side wall of the end cap (2) is fitted with a filter membrane (3) in the inner cavity of the round shell (1). The side wall of the round shell (1) is fixedly connected to the right end with an inlet pipe (4). The left end face of the end cap (2) is fixedly connected with an outlet pipe (5). The outlet pipe (5) is connected to the filter membrane (3). The inner cavity of the end cap (2) is provided with a cleaning component.

2. The membrane separation equipment for purifying and recovering anodic oxidation waste acid according to claim 1, characterized in that: The cleaning assembly includes a fixed plate (7) fixedly connected to the inner wall of the end cap (2), a movable plate (8) rotatably connected to one side of the fixed plate (7), and several through holes (9) respectively opened on the side walls of the fixed plate (7) and the movable plate (8), with the through holes (9) on both sides facing each other, and a transmission assembly provided on the side wall of the movable plate (8).

3. The membrane separation equipment for purifying and recovering anodic oxidation waste acid according to claim 2, characterized in that: A water injection pipe (10) is fixedly connected to the side wall of the end cap (2) near the left end. The area between the fixing plate (7) and the inner wall of the end cap (2) is a water pressure zone. The water injection pipe (10) is connected to the water pressure zone. A sewage pipe (6) is fixedly connected to the right end face of the round shell (1).

4. The membrane separation equipment for purifying and recovering anodic oxidation waste acid according to claim 2, characterized in that: The transmission assembly includes a mounting plate (11) fixedly connected to the side wall of the end cover (2), a motor (12) fixedly connected to the side wall of the mounting plate (11), a worm (13) fixedly connected to the output shaft of the motor (12), the worm (13) passing through the end cover (2) and rotatably connected thereto, and an annular worm wheel (17) fixedly connected to the side wall of the movable plate (8), the worm (13) meshing with the annular worm wheel (17).

5. The membrane separation equipment for purifying and recovering anodic oxidation waste acid according to claim 2, characterized in that: A sealing ring (14) is fixedly connected to the left side wall of the movable plate (8), and a sealing groove (15) is provided on the right side wall of the fixed plate (7). The sealing ring (14) and the sealing groove (15) are rotatably connected.

6. The membrane separation equipment for purifying and recovering anodic oxidation waste acid according to claim 3, characterized in that: Valves (16) are installed on the side walls of the water inlet pipe (4), water injection pipe (10) and sewage pipe (6).

7. The membrane separation equipment for purifying and recovering anodic oxidation waste acid according to claim 1, characterized in that: The circular shell (1) and the end cap (2) are connected by threads.

8. The membrane separation equipment for purifying and recovering anodic oxidation waste acid according to claim 1, characterized in that: The filter membrane (3) is detachably connected to the end cap (2) and the round shell (1).

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