Pharmaceutical wastewater treatment device

Abstract

The invention discloses a pharmaceutical wastewater treatment device. The device comprises a precipitation cylinder, a stirring mechanism and a main control module. The precipitation cylinder is composed of a cylinder body and a cylinder cover, and the stirring mechanism comprises a stirring shaft, an electromagnetic pulse stirring module, a turbine stirring module and a negative pressure aeration module. The stirring shaft penetrates through the shaft hole of the barrel cover and can freely rotate and move up and down in the shaft hole. The electromagnetic pulse stirring module realizes intermittent up-and-down movement of a stirring shaft through an electromagnetic coil and a magnetic chuck to generate a pulse stirring effect; the turbine stirring module forms a vortex by using inclined blades on a turbine when the stirring shaft moves; the negative pressure aeration module realizes unpowered aeration through an aeration wheel and a passive one-way valve, increases dissolved oxygen in wastewater and promotes turbulence. According to the device, a three-dimensional mixing field of gas-liquid mixed turbulent flow is formed in a pulse-vortex-aeration coupled composite stirring mode, so that a flocculating agent and wastewater are quickly and uniformly mixed, and the flocculation reaction efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of wastewater treatment, in particular to a pharmaceutical wastewater treatment device. Background Art

[0002] Pharmaceutical wastewater has a complex composition, often containing high concentrations of organic matter (such as antibiotics and solvent residues), strong acids and bases, and difficult-to-degrade pollutants. Traditional treatment methods require a multi-stage approach combining physical, chemical, and biological techniques. Chemical flocculation is widely used due to its ease of operation and low cost. However, key challenges lie in the mixing efficiency and reaction uniformity of the flocculant and wastewater, which directly impact the flocculation and sedimentation results.

[0003] In the prior art, pharmaceutical wastewater flocculation treatment devices typically use mechanical stirring or aeration stirring. However, traditional stirring equipment mostly uses a single mechanical stirring method, such as paddle stirring and turbine stirring. This stirring method relies solely on a single rotational motion, has many stirring dead angles, and has low stirring efficiency. It is difficult to quickly and evenly mix the flocculant and wastewater, which affects the flocculation effect. In addition, most existing stirring equipment does not have an aeration function and requires additional equipment such as an air compressor. The aeration equipment is complex, energy-intensive, and costly. In addition, the design of the separation of the stirring and aeration structures results in a bulky equipment and low synergistic efficiency, thus requiring optimization and improvement. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a pharmaceutical wastewater treatment device.

[0005] The technical solution of the present invention is as follows: A pharmaceutical wastewater treatment device comprises: a sedimentation cylinder, a stirring mechanism and a main control module;

[0006] The sedimentation cylinder includes a cylinder body and a cylinder cover, the main control module is arranged on the outside of the cylinder body, the top of the cylinder body is open, the cylinder cover is detachably arranged on the top of the cylinder body, the top of the cylinder cover is provided with a water inlet pipe and a dosing pipe, the bottom of the side of the cylinder body is provided with a drain pipe, the bottom of the cylinder body is provided with a sewage pipe, and the drain pipe and sewage pipe are respectively provided with a control valve connected to the main control module;

[0007] The stirring mechanism includes a stirring shaft, an electromagnetic pulse stirring module, a turbine stirring module and a negative pressure aeration module. The cylinder cover is provided with an axial hole, the stirring shaft passes through the axial hole and extends into the cylinder body. The stirring shaft can rotate freely in the axial hole and move freely up and down along the axial hole;

[0008] The electromagnetic pulse stirring module includes an electromagnetic coil and a magnetic chuck. The electromagnetic coil is fixedly arranged in the cylinder cover and coaxially arranged with the shaft hole. The electromagnetic coil is connected to the main control module. The magnetic chuck is arranged in the cylinder and directly below the electromagnetic coil. The magnetic chuck is coaxially fixed with the stirring shaft.

[0009] The turbine stirring module includes a turbine, which is located below the magnetic chuck and is coaxially fixedly connected to the stirring shaft. A plurality of inclined blades are evenly arranged on the outer peripheral wall of the turbine;

[0010] The negative pressure aeration module includes an aeration wheel and a passive one-way valve. The aeration wheel is coaxially fixed to the bottom of the stirring shaft. The aeration wheel and the stirring shaft are hollow inside to form an air flow channel. The top of the stirring shaft is provided with an air inlet connected to the air flow channel, and the air inlet is connected to the external air. The outer peripheral wall of the aeration wheel is provided with an exhaust port connected to the air flow channel, and the exhaust port is provided with a passive one-way valve.

[0011] When the stirring shaft is stationary, the passive one-way valve is in a closed state. When the stirring shaft rotates and drives the aeration wheel to rotate, external air automatically flows to the aeration wheel under negative pressure and opens the passive one-way valve.

[0012] Furthermore, the bottom of the cylinder is a downwardly contracting conical portion, and the sewage pipe is provided at the bottom end of the conical portion.

[0013] Furthermore, the inner wall of the conical portion is provided with a smooth lining, and the surface of the lining is provided with a non-stick coating.

[0014] Furthermore, a plurality of flexible piezoelectric fibers are evenly arranged on the inner peripheral wall of the cylinder, and the flexible piezoelectric fibers are connected to the main control module. When alternating current is passed through the flexible piezoelectric fibers, the flexible piezoelectric fibers can generate waterweed-like swaying.

[0015] Furthermore, the flexible piezoelectric fiber is a PVDF-TrFE copolymer, and its piezoelectric coefficient is d 33 >30pC / N.

[0016] Furthermore, a limit plate is provided at the top end of the stirring shaft, the limit plate is located outside the cylinder cover, and the air inlet is provided on the limit plate.

[0017] Furthermore, a filter is provided at the air inlet.

[0018] Furthermore, the magnetic suction cup includes an upper disc body and a lower disc body, the upper disc body is a conical disc with the tip facing upward surrounding the stirring shaft, and the lower disc body is a conical disc with the tip facing downward surrounding the stirring shaft. The upper disc body and the lower disc body are symmetrical up and down and fixedly connected, and the upper disc body and the lower disc body are respectively provided with a plurality of water holes, and the water holes on the two disc bodies correspond to each other up and down.

[0019] Furthermore, the passive one-way valve is a duckbill valve, which includes a valve seat and an elastic valve sleeve. The valve seat is annular, and one axial end of the valve seat is detachably connected to the aeration wheel, and the other axial end is provided with the valve sleeve. The end of the valve sleeve away from the valve seat is constructed as a flat end, and a slit is provided at the flat end.

[0020] Furthermore, the outer peripheral wall of the valve seat is provided with an external thread, the inner peripheral wall of the exhaust port is provided with an internal thread, and the external thread is threadably connected to the internal thread.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The device is integrated with a stirring mechanism, which consists of an electromagnetic pulse stirring module, a turbine stirring module and a negative pressure aeration module, forming a pulse-vortex-aeration coupled composite stirring mode, which can form a three-dimensional mixing field of gas-liquid mixed turbulence in the wastewater, achieve rapid and uniform mixing of flocculant and wastewater, and effectively improve the flocculation reaction efficiency;

[0023] 2. A passive one-way valve is installed on the aeration wheel, which automatically draws in external air for air replenishment by utilizing the internal negative pressure generated by rotation, thus realizing unpowered aeration. This aeration structure is simple and has low aeration cost. In addition, aeration not only increases the dissolved oxygen in the wastewater and promotes the degradation of organic matter (such as antibiotic residues) by aerobic microorganisms, but also increases the turbulence of the liquid and improves the efficiency of the flocculation reaction.

[0024] 3. Each module of the stirring mechanism (electromagnetic pulse, turbine stirring, negative pressure aeration) undertakes different stirring and aeration functions respectively, and cooperates with each other to form an efficient mixing and aeration system. Moreover, each module is mainly integrated on the stirring shaft, with a relatively compact structure, which is easy to install and maintain.

[0025] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. The drawings are only examples and are not drawn strictly to scale. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0027] Figure 1 It is an overall schematic diagram of the present invention;

[0028] Figure 2 It is an internal schematic diagram of the present invention;

[0029] Figure 3 It is a cross-sectional schematic diagram of the barrel portion of the present invention;

[0030] Figure 4 It is a cross-sectional schematic diagram of the barrel cover portion of the present invention;

[0031] Figure 5 It is a sectional perspective view of the barrel cover portion of the present invention;

[0032] Figure 6 It is a three-dimensional diagram of the stirring shaft portion of the present invention;

[0033] Figure 7 is a cross-sectional view of the stirring shaft portion of the present invention;

[0034] Figure 8 Schematic diagram of the aeration wheel portion of the present invention;

[0035] Figure 9 Schematic diagram of the duckbill valve of the present invention.

[0036] Reference numerals:

[0037] 1. Sedimentation cylinder; 11. Cylinder body; 12. Cylinder cover; 13. Water inlet pipe; 14. Dosing pipe; 15. Drain pipe; 16. Sewage pipe; 17. Control valve; 18. Liner;

[0038] 2. Main control module;

[0039] 3. Stirring shaft; 31. Limiting plate;

[0040] 4. Electromagnetic pulse stirring module; 41. Electromagnetic coil; 42. Magnetic chuck; 43. Upper plate; 44. Lower plate; 45. Water hole;

[0041] 5. Turbine stirring module; 51. Turbine; 52. Blade;

[0042] 6. Negative pressure aeration module; 61. Aeration wheel; 62. Air flow channel; 63. Air inlet; 64. Exhaust port; 65. Valve seat; 66. Valve sleeve; 67. Passive one-way valve;

[0043] 7. Flexible piezoelectric fiber. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0046] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0047] In the description of the present invention, references to "first feature" and "second feature" may include one or more of these features. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being described. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of these features.

[0048] like Figures 1-9 The medical wastewater treatment device shown includes: a sedimentation cylinder 1, a stirring mechanism and a main control module 2.

[0049] like Figure 1-Figure 3 As shown, the sedimentation cylinder 1 includes a cylinder body 11 and a cylinder cover 12, the main control module 2 is arranged on the outside of the cylinder body 11, the top of the cylinder body 11 is open, the cylinder cover 12 is detachably arranged on the top of the cylinder body 11, and the top of the cylinder cover 12 is provided with a water inlet pipe 13 and a dosing pipe 14, a drain pipe 15 is provided at the bottom of the side of the cylinder body 11, and a sewage pipe 16 is provided at the bottom of the cylinder body 11, and a control valve 17 connected to the main control module 2 is provided on the drain pipe 15 and the sewage pipe 16 respectively.

[0050] When the device is in use, the pharmaceutical wastewater to be treated is added to the cylinder 11 through the water inlet pipe 13. A solution containing a flocculant is then added to the cylinder 11 through the dosing pipe 14 to flocculate and mix with the pharmaceutical wastewater. After a period of reaction, a precipitate settles to the bottom of the cylinder 11. The precipitate is then discharged by opening the control valve 17 on the sewage pipe 16. The flocculated pharmaceutical wastewater is then discharged by opening the control valve 17 on the drain pipe 15, facilitating further purification.

[0051] In the initial stage of the reaction, in order to ensure that the flocculant and the pharmaceutical wastewater can be mixed evenly and quickly, the device is also equipped with a stirring mechanism for mixing and stirring.

[0052] like Figure 2 、 Figure 4 and Figure 5 As shown, the stirring mechanism includes a stirring shaft 3, an electromagnetic pulse stirring module 4, a turbine stirring module 5 and a negative pressure aeration module 6. An axial hole is provided on the cylinder cover 12. The stirring shaft 3 passes through the axial hole and extends into the cylinder body 11. The stirring shaft 3 can rotate freely in the axial hole and move freely up and down along the axial hole.

[0053] like Figure 4 and Figure 5 As shown, the electromagnetic pulse stirring module 4 includes an electromagnetic coil 41 and a magnetic chuck 42. The electromagnetic coil 41 is fixedly arranged in the cylinder cover 12 and is coaxially arranged with the shaft hole. The electromagnetic coil 41 is connected to the main control module 2. The magnetic chuck 42 is arranged in the cylinder body 11 and is located directly below the electromagnetic coil 41. The magnetic chuck 42 is coaxially fixedly connected to the stirring shaft 3.

[0054] like Figure 6 As shown, the turbine stirring module 5 includes a turbine 51, which is located below the magnetic chuck 42 and is coaxially fixedly connected to the stirring shaft 3. A plurality of inclined blades 52 are evenly arranged on the outer peripheral wall of the turbine 51;

[0055] like Figure 6-Figure 8As shown, the negative pressure aeration module 6 includes an aeration wheel 61 and a passive one-way valve 67. The aeration wheel 61 is coaxially fixed to the bottom of the stirring shaft 3. The aeration wheel 61 and the stirring shaft 3 are hollow to form an air flow channel 62. The top of the stirring shaft 3 is provided with an air inlet 63 connected to the air flow channel 62. The air inlet 63 is connected to the external air. The outer peripheral wall of the aeration wheel 61 is provided with an exhaust port 64 connected to the air flow channel 62, and the exhaust port 64 is provided with a passive one-way valve 67; when the stirring shaft 3 is stationary, the passive one-way valve 67 is in a closed state. When the stirring shaft 3 rotates and drives the aeration wheel 61 to rotate, the external air automatically flows to the aeration wheel 61 under negative pressure and flushes open the passive one-way valve 67.

[0056] Specifically, the stirring structure of the stirring shaft 3 is mainly divided into three parts: upper, middle and lower. The upper layer is the electromagnetic pulse stirring module 4, the middle layer is the turbine stirring module 5, and the lower layer is the negative pressure aeration module 6, thus forming a composite stirring mode of pulse-vortex-aeration coupling.

[0057] In the electromagnetic pulse stirring module 4, the electromagnetic coil 41 is connected to the main control module 2, and when the electromagnetic coil 41 is energized, a magnetic field can be generated. Since a magnetic suction cup 42 is provided on the stirring shaft 3, and the magnetic suction cup 42 is located directly below the electromagnetic coil 41, after the magnetic field is generated, the magnetic suction cup 42 will move upward under the action of the magnetic attraction, thereby driving the stirring shaft 3 to move upward. When the current is disconnected, the magnetic field disappears, and the magnetic suction cup 42 will drop again under its own weight, thereby driving the stirring shaft 3 to move downward. Therefore, the main control module 2 intermittently passes a pulse current (for example, a frequency of 0.5 to 5 Hz) into the electromagnetic coil 41, which can realize the intermittent up and down movement of the stirring shaft 3, thereby causing the wastewater in the cylinder 11 to oscillate in the up and down directions.

[0058] In the turbine stirring module 5, the turbine 51 is coaxially fixedly connected to the stirring shaft 3. When the stirring shaft 3 moves up and down, the turbine 51 will also be driven to move up and down. Since the turbine 51 is provided with inclined blades 52, it will be impacted by the water flow during the up and down movement, causing the turbine 51 to rotate, and then drive the stirring shaft 3 to rotate. After the turbine 51 rotates, it can cause a vortex in the wastewater in the cylinder 11.

[0059] In the negative pressure aeration module 6, the aeration wheel 61 is coaxially fixedly connected to the agitator shaft 3. Therefore, when the agitator shaft 3 rotates, it drives the aeration wheel 61 to rotate. Because the aeration wheel 61 is hollow, when the aeration wheel 61 rotates, the gas inside it will break open the passive one-way valve 67 under the centrifugal force and enter the wastewater. At this time, a negative pressure is formed in the central area of ​​the aeration wheel 61, and external air is automatically sucked in through the air flow channel 62 for air replenishment. This achieves unpowered aeration without additional active air supply devices such as air compressors and air pumps.

[0060] When the gas is discharged and enters the wastewater, the discharge of air will increase the dissolved oxygen in the wastewater, promote aerobic microorganisms to degrade organic matter (such as antibiotic residues), and the discharge of air will increase the turbulence of the liquid and improve the reaction efficiency.

[0061] Therefore, the stirring mechanism can form a three-dimensional mixing field of gas-liquid mixed turbulence in the wastewater through a composite stirring method coupled with pulse-vortex-aeration, so as to achieve a stirring effect in which the flocculant and wastewater can be quickly and evenly mixed, thereby improving the efficiency of the flocculation reaction.

[0062] In some embodiments, as Figure 2 and Figure 3 As shown, the bottom of the cylinder 11 is a downwardly conical portion, with a drain pipe 16 at the bottom end of the conical portion. This allows the flocculated sediment to be collected at the drain pipe 16 for easy drainage. Furthermore, the inner wall of the conical portion is provided with a smooth lining 18 with a non-stick coating, which prevents the flocculated sediment from sticking to the conical portion and lining 18.

[0063] In some embodiments, as Figure 2 and Figure 3 As shown, a number of flexible piezoelectric fibers 7 are evenly provided on the inner wall of the cylinder 11. The flexible piezoelectric fibers 7 are connected to the main control module 2. After the alternating current is passed through the flexible piezoelectric fibers 7, they can produce waterweed-like swaying, thereby achieving gentle stirring with low shear force at the edge area of ​​the cylinder 11. Combined with the above-mentioned stirring mechanism, it is conducive to achieving all-round stirring and is less likely to have dead corners of stirring.

[0064] Flexible piezoelectric fiber 7 is a PVDF-TrFE (polyvinylidene fluoride-trifluoroethylene copolymer) copolymer with a piezoelectric coefficient d33>30pC / N. Compared with ordinary piezoelectric fiber materials such as PVDF and PZT ceramics, the piezoelectric response of this PVDF-TrFE is sufficient to drive the cilia to swing significantly (amplitude can reach 5-10cm), and only 10-50V AC is needed to stimulate effective vibration. Traditional PVDF requires a higher voltage to achieve the same effect (PZT ceramics require more than 100V), so PVDF-TrFE is suitable for safe low-voltage control systems. In addition, PVDF-TrFE has good corrosion resistance and can resist common organic solvents (such as acetone and xylene), strong acids (pH=2), and strong bases (pH=12) in pharmaceutical wastewater. Compared with PZT ceramics that dissolve in acidic environments, the life of PVDF-TrFE is extended by more than 3 times.

[0065] In some embodiments, as Figure 4As shown, a limit plate 31 is provided at the top of the stirring shaft 3. The limit plate 31 is located outside the cylinder cover 12. An air inlet 63 is provided on the limit plate 31. The limit plate 31 can prevent the stirring shaft 3 from separating downward from the shaft hole. Furthermore, a filter is provided at the air inlet 63 to filter the incoming external air.

[0066] In some embodiments, as Figure 5-Figure 7 As shown, the magnetic chuck 42 comprises an upper disc 43 and a lower disc 44. The upper disc 43 is a conical disc surrounding the agitator shaft 3, with its tip facing upward. The lower disc 44 is a conical disc surrounding the agitator shaft 3, with its tip facing downward. The upper and lower discs 43 and 44 are vertically symmetrical and fixedly connected. Each disc is provided with a plurality of water holes 45, with the water holes 45 on each disc corresponding to each other. Because both the upper and lower discs are conical and have water holes 45, the magnetic force can reduce the resistance of the water flow to the magnetic chuck 42 when it moves up and down.

[0067] In some embodiments, as Figure 7-Figure 9 As shown, the passive one-way valve 67 is a duckbill valve, which includes a valve seat 65 and an elastic valve sleeve 66. The valve seat 65 is annular, and one axial end of the valve seat 65 is detachably connected to the aeration wheel 61, and the other axial end is provided with a valve sleeve 66. The end of the valve sleeve 66 away from the valve seat 65 is constructed as a flat end, and a slit is provided at the flat end.

[0068] The valve sleeve 66 of this duckbill valve is typically made of silicone. When the aeration wheel 61 rotates and generates negative pressure, the external air pressure pushes open the slit in the valve sleeve 66, allowing aeration. If water attempts to flow back, the water pressure compresses the valve sleeve 66, closing it and achieving reverse sealing. This passive one-way valve 67 has no mechanically moving parts, a simple structure, and reliable operation. It effectively prevents water backflow and ensures one-way gas discharge.

[0069] Furthermore, the outer peripheral wall of the valve seat 65 is provided with an external thread, and the inner peripheral wall of the exhaust port 64 is provided with an internal thread, and the external thread and the internal thread are threadedly connected, thereby realizing the detachable and replaceable duckbill valve, which is convenient for later maintenance.

[0070] In summary, this device has the following characteristics:

[0071] 1. The device is integrated with a stirring mechanism, which consists of an electromagnetic pulse stirring module 4, a turbine stirring module 5 and a negative pressure aeration module 6, forming a pulse-vortex-aeration coupled composite stirring mode, which can form a three-dimensional mixing field of gas-liquid mixed turbulence in the wastewater, achieve rapid and uniform mixing of flocculant and wastewater, and effectively improve the flocculation reaction efficiency;

[0072] 2. A passive one-way valve 67 is provided on the aeration wheel 61, which automatically draws in external air for air replenishment by utilizing the internal negative pressure generated by rotation, thereby realizing unpowered aeration. This aeration structure is simple and has low aeration cost. In addition, aeration not only increases the dissolved oxygen in the wastewater, promoting aerobic microorganisms to degrade organic matter (such as antibiotic residues), but also increases the turbulence of the liquid and improves the efficiency of the flocculation reaction.

[0073] 3. Each module of the stirring mechanism (electromagnetic pulse, turbine 51 stirring, negative pressure aeration) undertakes different stirring and aeration functions respectively, and cooperates with each other to form an efficient mixing and aeration system. Moreover, each module is mainly integrated on the stirring shaft 3, with a relatively compact structure, which is easy to install and maintain.

[0074] Although some embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations to these embodiments without departing from the principles and purpose of the present invention are all within the scope of protection of the claims of the present invention.

Claims

1. A pharmaceutical wastewater treatment device, characterized in that: include: Sedimentation cylinder, stirring mechanism and main control module; The sedimentation cylinder includes a cylinder body and a cylinder cover, the main control module is arranged on the outside of the cylinder body, the top of the cylinder body is open, the cylinder cover is detachably arranged on the top of the cylinder body, the top of the cylinder cover is provided with a water inlet pipe and a dosing pipe, the bottom of the side of the cylinder body is provided with a drain pipe, the bottom of the cylinder body is provided with a sewage pipe, and the drain pipe and sewage pipe are respectively provided with a control valve connected to the main control module; The stirring mechanism includes a stirring shaft, an electromagnetic pulse stirring module, a turbine stirring module and a negative pressure aeration module. The cylinder cover is provided with an axial hole, the stirring shaft passes through the axial hole and extends into the cylinder body. The stirring shaft can rotate freely in the axial hole and move freely up and down along the axial hole; The electromagnetic pulse stirring module includes an electromagnetic coil and a magnetic chuck. The electromagnetic coil is fixedly arranged in the cylinder cover and coaxially arranged with the shaft hole. The electromagnetic coil is connected to the main control module. The magnetic chuck is arranged in the cylinder and directly below the electromagnetic coil. The magnetic chuck is coaxially fixed with the stirring shaft. The turbine stirring module includes a turbine, which is located below the magnetic chuck and is coaxially fixedly connected to the stirring shaft. A plurality of inclined blades are evenly arranged on the outer peripheral wall of the turbine; The negative pressure aeration module includes an aeration wheel and a passive one-way valve. The aeration wheel is coaxially fixed to the bottom of the stirring shaft. The aeration wheel and the stirring shaft are hollow inside to form an air flow channel. The top of the stirring shaft is provided with an air inlet connected to the air flow channel, and the air inlet is connected to the external air. The outer peripheral wall of the aeration wheel is provided with an exhaust port connected to the air flow channel, and the exhaust port is provided with a passive one-way valve. When the stirring shaft is stationary, the passive one-way valve is in a closed state. When the stirring shaft rotates and drives the aeration wheel to rotate, external air automatically flows to the aeration wheel under negative pressure and opens the passive one-way valve.

2. The pharmaceutical wastewater treatment device according to claim 1, characterized in that: The bottom of the cylinder is a tapered portion that contracts downward, and the sewage pipe is provided at the bottom end of the tapered portion.

3. The pharmaceutical wastewater treatment device according to claim 2, characterized in that: The inner wall of the conical portion is provided with a smooth lining plate, and the surface of the lining plate is provided with a non-stick coating.

4. The pharmaceutical wastewater treatment device according to claim 1, characterized in that: A plurality of flexible piezoelectric fibers are evenly arranged on the inner peripheral wall of the cylinder, and the flexible piezoelectric fibers are connected to the main control module. When alternating current is passed through the flexible piezoelectric fibers, the flexible piezoelectric fibers can generate waterweed-like swaying.

5. The pharmaceutical wastewater treatment device according to claim 4, characterized in that: The flexible piezoelectric fiber is a PVDF-TrFE copolymer, and its piezoelectric system is d 33 >30pC / N.

6. The pharmaceutical wastewater treatment device according to claim 1, characterized in that: A limit plate is provided at the top end of the stirring shaft, the limit plate is located outside the cylinder cover, and the air inlet is provided on the limit plate.

7. The pharmaceutical wastewater treatment device according to claim 1, characterized in that: A filter is provided at the air inlet.

8. The pharmaceutical wastewater treatment device according to claim 1, characterized in that: The magnetic suction cup includes an upper disc body and a lower disc body. The upper disc body is a conical disc with the tip facing upward and surrounding the stirring shaft. The lower disc body is a conical disc with the tip facing downward and surrounding the stirring shaft. The upper disc body and the lower disc body are symmetrical up and down and fixedly connected. The upper disc body and the lower disc body are respectively provided with a plurality of water holes, and the water holes on the two disc bodies correspond to each other up and down.

9. The pharmaceutical wastewater treatment device according to claim 1, characterized in that: The passive one-way valve is a duckbill valve, which includes a valve seat and an elastic valve sleeve. The valve seat is annular, and one axial end of the valve seat is detachably connected to the aeration wheel, and the other axial end is provided with the valve sleeve. The end of the valve sleeve away from the valve seat is constructed as a flat end, and a slit is provided at the flat end.

10. The pharmaceutical wastewater treatment device according to claim 9, characterized in that: An outer peripheral wall of the valve seat is provided with an external thread, and an inner peripheral wall of the exhaust port is provided with an internal thread, and the external thread is threadably connected to the internal thread.

Images