Esterification wastewater multi-stage membrane separation recovery treatment device

Abstract

The utility model discloses an esterification wastewater multistage membrane separation recovery treatment device which comprises a base, a treatment tank is fixedly installed on the upper end face of the base, a water inlet pipe extending into the treatment tank is fixedly installed on the upper end face of the treatment tank, and a rotating shaft is rotatably installed in the treatment tank. A first motor connected with the rotating shaft is fixedly mounted on the upper end face of the treatment tank, a plurality of stirring blades are fixedly mounted on the outer wall of the rotating shaft through a mounting mechanism, and a separation box is fixedly mounted on the upper end face of the base through a mounting plate. According to the utility model, components such as the screw rod, the limiting rod and the moving block are arranged, the second motor drives the screw rod to rotate, and the moving block can stably ascend along the limiting rod under the guide action of thread transmission and the limiting rod, so that the cover plate and the filter membrane placing frame below are driven to integrally move out of the separation box. Compared with a tedious bolt dismounting mode in a traditional device, the structure shortens the dismounting time of the filter membrane, and greatly reduces the operation difficulty and the labor cost.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a multi-stage membrane separation and recovery treatment device for esterification wastewater. Background Technology

[0002] Esterification wastewater is a common type of industrial wastewater, primarily originating from the wastewater generated during the esterification reaction. Esterification is an organic chemical reaction used to synthesize ester compounds. The process utilizes large amounts of organic solvents and catalysts, while also producing byproducts and unreacted raw materials. These substances are discharged as wastewater after the reaction is complete.

[0003] If esterification wastewater is discharged directly without effective treatment, it will cause serious pollution to the soil, water bodies and other ecological environments, and disrupt the ecological balance. With the development of membrane separation technology, it has been applied in the treatment of esterification wastewater. However, when using existing membrane separation treatment devices, the membrane modules are fixedly installed, requiring a large number of bolts, nuts and other connectors for fastening. The installation process is cumbersome and requires a lot of manpower and time. Due to the difficulty in installing and disassembling the membrane modules, daily maintenance and cleaning work is difficult to carry out smoothly, reducing the treatment efficiency of esterification wastewater and making it impractical. Therefore, it is necessary to redesign a multi-stage membrane separation and recovery treatment device for esterification wastewater to address the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-stage membrane separation and recovery treatment device for esterification wastewater.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-stage membrane separation and recovery treatment device for esterification wastewater includes a base, a treatment tank fixedly mounted on the upper surface of the base, an inlet pipe extending into the upper surface of the treatment tank fixedly mounted on the upper surface of the treatment tank, a rotating shaft rotatably mounted inside the treatment tank, a first motor connected to the rotating shaft fixedly mounted on the upper surface of the treatment tank, multiple stirring blades fixedly mounted on the outer wall of the rotating shaft via an installation mechanism, a separation box fixedly mounted on the upper surface of the base via an installation plate, and a transfer pump fixedly mounted on the upper surface of the base. The inlet pipe of the transfer pump communicates with the interior of the treatment tank, and the outlet pipe of the transfer pump communicates with the interior of the separation box. A connection between the outer wall of the separation box and the interior is fixedly mounted. The discharge pipe is connected. A screw is rotatably mounted on the upper surface of the base via a support frame. A second motor connected to the screw is fixedly mounted on the upper surface of the support frame. A moving block is rotatably mounted on the outer wall of the screw via a thread. A limit rod is fixedly mounted inside the support frame. The limit rod slides through the moving block. A cover plate is fixedly connected to the upper surface of the moving block via a connecting mechanism. A first placement frame, a second placement frame, and a third placement frame are fixedly mounted on the bottom wall of the cover plate via a connecting plate. A primary filter membrane is slidably mounted inside the first placement frame. A secondary filter membrane is slidably mounted inside the second placement frame. A tertiary filter membrane is slidably mounted inside the third placement frame.

[0007] Preferably, the installation mechanism includes a mounting sleeve fixedly installed on the outer wall of the rotating shaft, and each of the stirring blades is fixedly installed on the outer wall of the mounting sleeve.

[0008] Preferably, the connecting mechanism includes two connecting rods fixedly installed on the upper end face of the movable block, and the ends of the two connecting rods are fixedly connected to the upper end face of the cover plate.

[0009] Preferably, an additive pump is fixedly installed on the upper end face of the treatment tank, and the outlet pipe of the additive pump extends into the interior of the treatment tank.

[0010] Preferably, a pH detector is fixedly installed on the outer wall of the treatment tank via a support plate, and the pH detector probe extends into the interior of the treatment tank.

[0011] Preferably, the first placement frame, the second placement frame, and the third placement frame are distributed sequentially from top to bottom, and sealing rings are fixedly installed on the outer walls of the first placement frame, the second placement frame, and the third placement frame.

[0012] The beneficial effects of this utility model are:

[0013] 1. By incorporating components such as a screw, a limiting rod, and a moving block, the second motor drives the screw to rotate. Guided by the threaded transmission and the limiting rod, the moving block smoothly rises along the limiting rod, thereby removing the cover plate and the filter membrane placement frame below from the separation box as a whole. Compared to the cumbersome bolt disassembly method in traditional devices, this structure shortens the filter membrane disassembly time, greatly reducing operational difficulty and labor costs.

[0014] 2. By setting up components such as a pH detector, a rotating shaft, and stirring blades, the pH detector can accurately monitor the acidity and alkalinity of the wastewater in the treatment tank in real time. The first motor drives the rotating shaft and stirring blades to rotate at high speed, powerfully agitating the wastewater and ensuring that the reagent and wastewater are fully mixed in a short time. This can shorten the pH adjustment time. The rapid and uniform mixing process not only improves the pretreatment efficiency but also ensures that the wastewater is in a state suitable for membrane separation treatment, effectively improving the effect and stability of subsequent membrane separation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the multi-stage membrane separation and recovery treatment device for esterification wastewater proposed in this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the vertical section structure;

[0017] Figure 3 This is a side view of the multi-stage membrane separation and recovery treatment device for esterification wastewater proposed in this utility model.

[0018] Figure 4 for Figure 1 Enlarged schematic diagram of the structure at point A in the diagram;

[0019] Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point B in the diagram;

[0020] Figure 6 for Figure 3 A magnified schematic diagram of the structure at point C.

[0021] In the diagram: 1. Base, 2. Treatment tank, 3. Inlet pipe, 4. Rotating shaft, 5. First motor, 6. Mounting sleeve, 7. Stirring blade, 8. Addition pump, 9. Support plate, 10. pH detector, 11. Mounting plate, 12. Separation box, 13. Transfer pump, 14. Discharge pipe, 15. Support frame, 16. Screw, 17. Second motor, 18. Limiting rod, 19. Moving block, 20. Connecting rod, 21. Cover plate, 22. Connecting plate, 23. First placement frame, 24. Second placement frame, 25. Third placement frame, 26. Primary filter membrane, 27. Secondary filter membrane, 28. Tertiary filter membrane, 29. Sealing ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-6A multi-stage membrane separation and recovery treatment device for esterification wastewater includes a base 1, a treatment tank 2 fixedly mounted on the upper surface of the base 1, an inlet pipe 3 extending into the upper surface of the treatment tank 2 fixedly mounted on the upper surface of the treatment tank 2, a rotating shaft 4 rotatably mounted inside the treatment tank 2, a first motor 5 connected to the rotating shaft 4 fixedly mounted on the upper surface of the treatment tank 2, multiple stirring blades 7 fixedly mounted on the outer wall of the rotating shaft 4 via an installation mechanism, a separation box 12 fixedly mounted on the upper surface of the base 1 via an installation plate 11, a transfer pump 13 fixedly mounted on the upper surface of the base 1, the inlet pipe of the transfer pump 13 communicating with the interior of the treatment tank 2, the outlet pipe of the transfer pump 13 communicating with the interior of the separation box 12, and a discharge pipe 14 communicating with the interior of the separation box 12 fixedly mounted on the outer wall of the separation box 12. A screw 16 is rotatably mounted on the upper end face of a support frame 15. A second motor 17 connected to the screw 16 is fixedly mounted on the upper end face of the support frame 15. A moving block 19 is rotatably mounted on the outer wall of the screw 16 via a thread. A limit rod 18 is fixedly mounted inside the support frame 15. The limit rod 18 slides through the moving block 19. A cover plate 21 is fixedly connected to the upper end face of the moving block 19 via a connecting mechanism. A first placement frame 23, a second placement frame 24, and a third placement frame 25 are fixedly mounted on the bottom wall of the cover plate 21 via a connecting plate 22. A primary filter membrane 26 is slidably mounted inside the first placement frame 23. A secondary filter membrane 27 is slidably mounted inside the second placement frame 24. A tertiary filter membrane 28 is slidably mounted inside the third placement frame 25.

[0024] The installation mechanism includes a mounting sleeve 6 fixedly installed on the outer wall of the rotating shaft 4, and each stirring blade 7 is fixedly installed on the outer wall of the mounting sleeve 6.

[0025] Furthermore, the mounting sleeve 6 and the rotating shaft 4 are connected by a key to ensure that the mounting sleeve 6 and the rotating shaft 4 will not rotate relative to each other during the stirring process, while also facilitating the disassembly and replacement of the mounting sleeve 6.

[0026] The connecting mechanism includes two connecting rods 20 fixedly installed on the upper surface of the movable block 19, and the ends of the two connecting rods 20 are fixedly connected to the upper surface of the cover plate 21.

[0027] Furthermore, the connection points between the connecting rod 20 and the moving block 19 and the cover plate 21 are all fixed by welding to ensure the stability of the connection.

[0028] An additive pump 8 is fixedly installed on the upper end face of the treatment tank 2, and the outlet pipe of the additive pump 8 extends into the interior of the treatment tank 2.

[0029] Furthermore, a check valve is installed on the outlet pipe of the additive pump 8 to prevent wastewater in the treatment tank 2 from flowing back into the additive pump 8 and to protect the pump body; at the same time, the outlet pipe is made of special pipe material that is resistant to acid and alkali corrosion, which extends the service life of the pipe and ensures the stability of the agent delivery.

[0030] A pH detector 10 is fixedly installed on the outer wall of the treatment tank 2 via a support plate 9, and the probe of the pH detector 10 extends into the interior of the treatment tank 2.

[0031] Furthermore, the probe of the pH detector 10 is covered with a protective sleeve, on which are evenly distributed fine through holes. This not only protects the probe from damage by impurities in the wastewater, but also ensures that the probe is in full contact with the wastewater, thus ensuring the accuracy of the detection data.

[0032] The first placement frame 23, the second placement frame 24, and the third placement frame 25 are distributed from top to bottom, and sealing rings 29 are fixedly installed on the outer walls of the first placement frame 23, the second placement frame 24, and the third placement frame 25.

[0033] Furthermore, each sealing ring 29 is coated with an anti-stick coating, which effectively prevents the sealing ring 29 from sticking to the inner wall of the separation box 12 when the placement frame is disassembled, making maintenance and replacement easier.

[0034] When this utility model is in use, the esterification wastewater can be transported to the treatment tank 2 through the inlet pipe 3. Then, the pH detector 10 starts to monitor the acidity and alkalinity of the wastewater in real time. If the pH value of the wastewater deviates from the appropriate range, the addition pump 8 injects neutralizing agents and other agents into the treatment tank 2 according to the preset program or manual setting. At the same time, the first motor 5 drives the rotating shaft 4 and the stirring blade 7 to rotate at high speed, strongly stirring the wastewater, so that the agents and wastewater are fully mixed and the pH is quickly adjusted, laying the foundation for subsequent treatment. When the wastewater pretreatment meets the standard, the transfer pump 13 starts and pumps the wastewater in the treatment tank 2 to the separation box 12 through the pipeline. Before this, the second motor 17 has been pre-operated, driving the screw 16 to rotate, so that the moving block 19 moves down along the limit rod 18, thereby allowing the cover plate 21 and the first placement frame 23, the second placement frame 24, and the third placement frame 25 below to fall accurately into the separation box 12. The sealing ring 29 tightly fits the inner wall of the box to form a sealed space.

[0035] After entering the separation tank 12, the wastewater passes through the primary filter membrane 26, the secondary filter membrane 27, and the tertiary filter membrane 28 sequentially from top to bottom. Each filter membrane, based on its pore size and characteristics, traps impurities such as organic matter, colloids, and salts of different particle sizes in the wastewater. Large particles and macromolecular organic matter are first intercepted by the primary filter membrane 26. The permeated wastewater continues to be filtered by the secondary filter membrane 27, separating small molecular organic matter and some ions. Finally, the tertiary filter membrane 28 further removes residual micro-impurities and salts, achieving deep purification of the wastewater. The purified water flows out from the discharge pipe 14. After meeting the discharge standards, it can be directly discharged or recycled for reuse. When disassembling and cleaning the primary filter membrane 26, secondary filter membrane 27, and tertiary filter membrane 28, first start the second motor 17. Its output shaft drives the screw 16 to start rotating. Under the action of the threaded transmission, the moving block 19 slides upward along the limit rod 18. Through the connecting rod 20, the cover plate 21 is slowly raised. As the cover plate 21 rises, the first placement frame 23, the second placement frame 24, and the third placement frame 25, which are fixed on its bottom wall, are also moved out of the separation box 12. When it rises to a suitable height, turn off the second motor 17. At this time, the operator can directly pull out the primary filter membrane 26, secondary filter membrane 27, and tertiary filter membrane 28 from the corresponding placement frames.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-stage membrane separation and recovery treatment device for esterification wastewater, comprising a base (1), characterized in that, A processing tank (2) is fixedly installed on the upper surface of the base (1). An inlet pipe (3) extending into the interior is fixedly installed on the upper surface of the processing tank (2). A rotating shaft (4) is rotatably installed inside the processing tank (2). A first motor (5) connected to the rotating shaft (4) is fixedly installed on the upper surface of the processing tank (2). Multiple stirring blades (7) are fixedly installed on the outer wall of the rotating shaft (4) through an installation mechanism. A separation box (12) is fixedly installed on the upper surface of the base (1) through an installation plate (11). A conveying pump (13) is fixedly installed on the upper surface of the base (1). The inlet pipe of the conveying pump (13) is connected to the interior of the processing tank (2). The outlet pipe of the conveying pump (13) is connected to the interior of the separation box (12). A discharge pipe (14) communicating with the interior is fixedly installed on the outer wall of the separation box (12). The upper surface of the base (1) is supported by a support frame ( 15) A screw (16) is rotatably installed. A second motor (17) connected to the screw (16) is fixedly installed on the upper end face of the support frame (15). A moving block (19) is rotatably installed on the outer wall of the screw (16) by a thread. A limit rod (18) is fixedly installed inside the support frame (15). The limit rod (18) slides through the moving block (19). A cover plate (21) is fixedly connected to the upper end face of the moving block (19) by a connecting mechanism. A first placement frame (23), a second placement frame (24) and a third placement frame (25) are fixedly installed on the bottom wall of the cover plate (21) by a connecting plate (22). A first-stage filter membrane (26) is slidably installed inside the first placement frame (23). A second-stage filter membrane (27) is slidably installed inside the second placement frame (24). A third-stage filter membrane (28) is slidably installed inside the third placement frame (25).

2. The multi-stage membrane separation and recovery treatment device for esterification wastewater according to claim 1, characterized in that, The installation mechanism includes a mounting sleeve (6) fixedly installed on the outer wall of the rotating shaft (4), and each of the stirring blades (7) is fixedly installed on the outer wall of the mounting sleeve (6).

3. The multi-stage membrane separation and recovery treatment device for esterification wastewater according to claim 2, characterized in that, The connecting mechanism includes two connecting rods (20) fixedly installed on the upper surface of the movable block (19), and the ends of the two connecting rods (20) are fixedly connected to the upper surface of the cover plate (21).

4. The multi-stage membrane separation and recovery treatment device for esterification wastewater according to claim 3, characterized in that, An additive pump (8) is fixedly installed on the upper end face of the treatment tank (2), and the outlet pipe of the additive pump (8) extends into the interior of the treatment tank (2).

5. The multi-stage membrane separation and recovery treatment device for esterification wastewater according to claim 4, characterized in that, A pH detector (10) is fixedly installed on the outer wall of the treatment tank (2) by a support plate (9), and the probe of the pH detector (10) extends into the interior of the treatment tank (2).

6. The multi-stage membrane separation and recovery treatment device for esterification wastewater according to claim 5, characterized in that, The first placement frame (23), the second placement frame (24) and the third placement frame (25) are distributed from top to bottom, and the outer walls of the first placement frame (23), the second placement frame (24) and the third placement frame (25) are all fixedly installed with sealing rings (29).

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