Ink wastewater treatment device and process for printing

Abstract

This invention discloses a wastewater treatment device and process for printing ink, relating to the field of wastewater treatment technology. It includes a filtration chamber and a treatment chamber, with the treatment chamber equipped with an aeration component and a separation component. The aeration component includes a protruding pipe and an annular cavity. An electromagnetically driven rotating ring and rotating bars are located outside the annular cavity for cleaning the air jet and agitating the wastewater. The separation component includes multiple independent separation chambers and rotating chambers, with a solenoid valve installed in each connecting pipe for fault isolation. A rotating shaft driven by wastewater and a deflector plate are located inside the hemispherical bowl, with outlets between the deflector plates for mixing flocculant. The process includes: wastewater undergoing pretreatment via a dam-type hydraulic jump, secondary filtration via a filter plate, aeration in the annular cavity, and then flocculant mixing in the hemispherical bowl before being distributed to each rotating chamber for rotational separation. Clean water is discharged into a storage chamber, and impurities are discharged into an impurity chamber. This invention solves the problems of easy clogging of the aeration port, large flocculant usage, and operational disruption caused by separation chamber malfunctions, improving the stability and economy of the equipment operation.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a device and process for treating wastewater from printing ink. Background Technology

[0002] Printing ink wastewater falls under the category of dyeing and printing wastewater. It mainly originates from the cleaning process of printing equipment. The pollutants include cyclic organic compounds containing chromophores, acrylic resins, and macromolecular dispersants. It has high COD, high color intensity, and is difficult to degrade, thus requiring treatment of printing ink wastewater. Printing ink wastewater treatment equipment is a special device used to treat high-concentration, high-color, and difficult-to-degrade ink wastewater generated during the printing production process. This type of equipment usually removes suspended solids, colloidal particles, organic pigments, and some dissolved pollutants from the wastewater through processes such as filtration, aeration, flocculation, and solid-liquid separation, so that the wastewater meets the discharge or reuse standards. Existing printing ink wastewater treatment devices mostly adopt a combination of filtration and sedimentation. However, in actual operation, because ink wastewater contains a large number of fine fibers, pigment particles and viscous substances, the air jets of the aeration components are easily blocked by impurities, resulting in a decrease in aeration efficiency or even failure, which affects the air flotation separation effect. Summary of the Invention

[0003] The purpose of this invention is to provide a device and process for treating wastewater from printing ink, so as to solve the problem of reduced aeration efficiency caused by impurities blocking the air jet nozzle in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A wastewater treatment device for printing ink includes a filtration chamber and a treatment chamber. The treatment chamber includes an aeration component and a separation component. The aeration component is located in the middle of the filtration chamber, and the separation component is located at the bottom of the filtration chamber. The aeration component and the separation component are in communication. The aeration assembly consists of a protruding pipe and an annular cavity. The upper end of the protruding pipe is connected to the filter cavity, and the annular cavity is located outside the upper end of the protruding pipe. A pumping assembly is installed inside the protruding pipe and the annular cavity, and the pumping assembly is connected to the annular cavity. The separation assembly consists of several separation chambers, each of which is connected to the bottom of the protruding tube. A liquid storage chamber is provided around each separation chamber and is connected to the separation chamber. A rotating chamber is provided inside each separation chamber and is connected to the separation chamber. An impurity chamber is provided at the bottom of the rotating chamber and is connected to the impurity chamber.

[0005] Wastewater is fed from the filtration chamber into the annular chamber and the protruding pipe, where it undergoes aeration treatment. The aerated wastewater is then fed into the rotating chamber through the protruding pipe. During this flow, the wastewater passes through a hemispherical bowl where flocculants are added and stirred. This causes impurities in the wastewater to clump together under the action of the flocculants. After the wastewater is fed into the rotating chamber, the centrifugal force generated by the rotation of the chamber is applied to the wastewater, causing the wastewater and impurities to separate in the separation chamber. The separated wastewater is then fed into the storage chamber, while the impurities are fed into the impurity chamber.

[0006] Preferably, a plurality of jet nozzles are provided on the side of the annular cavity away from the protruding pipe, an air supply chamber is provided inside the annular cavity, the air supply chamber is connected to the plurality of jet nozzles, a rotating ring is provided on the outer side of the annular cavity, a plurality of rotating bars are provided on the rotating ring, the rotating bars are rotatably connected to the outer wall of the annular cavity, and the rotating ring is driven by electromagnetic force.

[0007] During the aeration process from the jet nozzle into the filter chamber, the controller controls the electromagnetic drive (i.e., an electromagnetic coil is installed inside the protruding pipe, and a magnetic conductor is installed inside the rotating ring. The electromagnetic coil is energized to generate magnetic force, which attracts the magnetic conductor inside the rotating ring) to rotate. As the rotating ring rotates, it drives several rotating bars to rotate. During the rotation, the rotating bars come into contact with the outer wall of the annular cavity. On the one hand, this pushes the wastewater in the filter chamber to flow towards the protruding pipe. On the other hand, it cleans the outer wall of the annular cavity, preventing impurities from blocking the jet nozzle and causing the gas to be unable to be delivered. It also drives the mixing and agitation of wastewater and aeration gas, thereby improving the mixing effect of wastewater and aeration gas.

[0008] Preferably, the pumping assembly includes an air inlet, an air pipe, and a pump device (the pump device is an air pump). The air inlet is located above the filter chamber. The air pipe passes through the filter chamber, the protruding pipe, and the annular chamber in sequence. The two ends of the air pipe are respectively connected to the air inlet and the air delivery chamber. The air pipe is connected to the pump device.

[0009] As the wastewater level in the filtration chamber rises, the pump is activated by the controller. The pump draws in outside air, which is then transported through the air inlet to the air pipe. The air then travels along the air pipe to the air delivery chamber, and finally through the air delivery chamber to the jet nozzle, where it is ejected. This process ensures that the wastewater flowing from the edge of the filtration chamber to the center undergoes multi-directional aeration as it passes through the annular chamber. The aerated wastewater then flows through the annular chamber to the protruding pipe.

[0010] Preferably, a connecting group is provided between the protruding tube and the separation chamber. The connecting group consists of a hemispherical bowl and several connecting tubes. The hemispherical bowl is located at the lower end of the protruding tube and is connected to the protruding tube. The several connecting tubes are located on the side of the hemispherical bowl away from the protruding tube. One end of each connecting tube is connected to the hemispherical bowl, and the other end of each connecting tube is connected to the separation chamber. Each connecting tube is equipped with a solenoid valve.

[0011] Wastewater enters the hemispherical bowl through the protruding pipe, then flows through the hemispherical bowl into the connecting pipe, and finally enters the rotating chamber for separation treatment through the connecting pipe. Since each connecting pipe is equipped with a solenoid valve, when a rotating chamber malfunctions, the corresponding connecting pipe can be closed by the solenoid valve, so that wastewater will not enter the rotating chamber for separation treatment through the connecting pipe, thereby improving the stability of equipment operation.

[0012] Preferably, a rotating shaft is provided inside the hemispherical bowl, the rotating shaft extends to the side near the upper end of the protruding tube, and a plurality of rotating plates are provided on the side of the rotating shaft near the upper end of the protruding tube. The axis of the rotating plates forms an angle with the axis of the rotating shaft, and the rotating plates are rotatably connected to the protruding tube and the annular cavity.

[0013] When wastewater flows into the protruding pipe through the filter plate, the wastewater will flow along the wall of the protruding pipe, causing the wastewater to encounter the rotating plate during the flow. Since the axis of the rotating plate forms an angle with the axis of the rotating shaft, the wastewater will push the rotating plate to rotate during the flow. In turn, the rotating plate will drive the rotating shaft to rotate, and the rotating shaft will drive the actuating plate of the hemispherical bowl to rotate.

[0014] Preferably, a plurality of actuating plates are provided on the side of the rotating shaft near the hemispherical bowl. The actuating plates are rotatably connected to the hemispherical bowl. A plurality of water outlets are provided between two adjacent actuating plates, and the water outlets are connected to a water conveying component.

[0015] As the agitator plate rotates under the action of the rotating shaft, it conveys wastewater to several connecting pipes. At the same time, the water conveying component (which is a water pump) extracts flocculant and delivers it through the pipes to the outlet. Finally, it is delivered through the outlet to the space between two adjacent agitator plates. Since the wastewater enters the space between two adjacent agitator plates first when it enters the connecting pipe, the flocculant comes into contact with the wastewater in the narrow space. Furthermore, the rotation of the agitator plate inside the hemispherical bowl causes the agitator plate to also mix with the flocculant and wastewater. Thus, a small amount of flocculant can be used to complete the flocculation treatment of impurities in the wastewater.

[0016] Preferably, the separation chamber has several separation holes at one end near the liquid storage chamber, and the rotating chamber has several water flow holes on its wall. The water flow holes communicate with the liquid storage chamber through the separation holes. A power device is provided at the bottom of the liquid storage chamber, and a gear is connected to the power device. A gear ring is provided at the bottom of the rotating chamber, and the gear meshes with the gear ring for transmission. The rotating chamber is rotatably connected to the separation chamber. An opening and closing plate is also provided at the bottom of the rotating chamber, and the opening and closing plate is rotatably connected to the rotating chamber. The opening and closing plate is driven by electronic control.

[0017] After the wastewater enters the rotating chamber through the connecting pipe, the controller starts the power unit (the power unit is a motor). The power unit drives the gear to rotate, and during the rotation of the gear, it meshes with the gear ring. During the meshing of the gear ring, it drives the rotating chamber to rotate. During the rotation of the rotating chamber, the separation chamber is in a stationary state. As a result, the water flow hole and the separation hole are in a reciprocating motion state of being connected and disconnected. When the water flow hole and the separation hole are connected, the wastewater in the rotating chamber is transported to the storage chamber through the water flow hole and the separation hole, while the flocculated impurities remain in the rotating chamber. When one of the rotating chambers malfunctions, the water flow hole and the separation hole are staggered to separate the water flow hole and the separation hole, preventing the wastewater in the storage chamber from flowing back into the malfunctioning rotating chamber. When the impurities in the rotating chamber are full, the controller closes the solenoid valve in the connecting pipe of the corresponding rotating chamber, and then opens the opening and closing plate at the bottom of the rotating chamber. As a result, the impurity rotating chamber moves under the action of rotation and gravity, causing the impurities to detach from the rotating chamber and be transported to the impurity chamber. After the impurities are detached, the opening and closing plate closes again, the solenoid valve in the connecting pipe opens again, and the rotating chamber rotates and separates the wastewater again.

[0018] Preferably, the outer wall of the filter chamber is provided with a plurality of water channels, a dam is provided between the water channels and the filter chamber, the top of the annular cavity and the top of the dam are on the same plane, and a filter plate is provided at the upper end of the protruding pipe.

[0019] Wastewater is transported to the filtration chamber through a flow channel. During the flow, the wastewater first flows past the dam and then flows down the dam towards the side closest to the filtration chamber. Because the side of the dam closest to the filtration chamber has a slope, when the wastewater flows to the junction of the bottom of the slope and the bottom of the filtration chamber, a hydraulic jump occurs at the junction, causing the wastewater to tumble and mix with the air. As wastewater is continuously injected into the filtration chamber, the liquid level in the filtration chamber rises continuously, and large particles of impurities floating in the wastewater are blocked by the dam, resulting in the first impurity separation. Since the top of the annular chamber and the top of the dam are on the same plane, when the wastewater level in the filtration chamber is at the same level as the top of the annular chamber, the wastewater flows through the filtration chamber, through the annular chamber, and towards the protruding pipe. During the flow, it flows through the filter plate, where it undergoes a second filtration, filtering out the floating impurities in the wastewater.

[0020] A treatment process for a wastewater treatment device for printing ink, the treatment process comprising the following specific steps: S1. Wastewater is transported from the flow channel through the dam to the filtration chamber; S2. The aeration gas is delivered to the jet nozzle through the gas delivery chamber and finally delivered to the filter chamber for aeration treatment. S3. The wastewater after aeration flows through the loop cavity to the protruding pipe, and pushes the rotating bar to rotate during the process of being transported through the protruding pipe. S4. The rotating bar drives the agitator plate through the rotating shaft to stir the wastewater and flocculant, and uses the agitator plate to transport the wastewater to the connecting pipe. S5. Wastewater is transported to the rotating chamber through the connecting pipe for centrifugal separation treatment; S6. The separated wastewater is transported to the storage chamber, and the impurities are transported to the impurity chamber.

[0021] Compared with the prior art, the beneficial effects of the present invention are: 1. An aeration assembly consisting of a protruding pipe and an annular cavity is used. An electromagnetically driven rotating ring and rotating bar are installed on the outside of the annular cavity. During aeration at the jet nozzle, the controller drives the rotating ring to rotate the rotating bar. The rotating bar can push the wastewater in the filter chamber towards the protruding pipe, enhancing the mixing and stirring effect of wastewater and aeration gas. On the other hand, it can continuously scrape the outer wall of the annular cavity, which can effectively prevent impurities from accumulating and blocking at the jet nozzle, ensuring smooth delivery of aeration gas, thereby improving the stability of aeration treatment.

[0022] 2. A rotating shaft and a deflector plate are installed inside the hemispherical bowl. The upper end of the rotating shaft is equipped with a rotating plate arranged at an angle to the flow direction of wastewater in the protruding pipe. When the wastewater flows, it pushes the rotating plate to rotate, which in turn drives the deflector plate to rotate inside the hemispherical bowl. At the same time, the outlet between the deflector plates delivers flocculant to the adjacent space, so that the flocculant can fully contact the wastewater in the narrow space before the wastewater enters the connecting pipe, and be stirred and mixed by the agitation of the deflector plate. Thus, a smaller amount of flocculant can be used to complete the flocculation treatment of impurities in the wastewater, reducing the consumption of flocculant and operating costs.

[0023] 3. Multiple independent separation chambers and rotating chambers are set up, and each connecting pipe is equipped with a solenoid valve. When a rotating chamber malfunctions, the corresponding solenoid valve can be closed individually, achieving rapid isolation of the faulty chamber without affecting the normal operation of other chambers. At the same time, the water flow holes on the rotating chamber wall and the separation holes on the separation chamber wall form a reciprocating motion of connection and disconnection during rotation. Under normal operation, wastewater is transported to the water storage chamber through the water flow holes and separation holes. In case of failure, the staggered arrangement of the water flow holes and separation holes effectively prevents the treated wastewater in the water storage chamber from flowing back into the faulty rotating chamber, improving the reliability of equipment operation and the convenience of maintenance.

[0024] 4. A water flow channel and a dam are set on the outer wall of the filter chamber, and the top of the dam is flush with the top of the annular chamber. When the wastewater flows in, it first passes through the dam to block large particles of impurities, and a water jump phenomenon occurs at the bottom slope of the dam for a period of time, which mixes and agitates the wastewater with air. Then, when the wastewater level rises to the top of the annular chamber, it undergoes secondary filtration through the filter plate, realizing multi-stage pretreatment and further reducing the load on subsequent treatment units. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the processing cavity; Figure 3 This is a front view of the processing cavity; Figure 4 This is a schematic diagram of the aeration component. Figure 5 This is a front view of the aeration assembly; Figure 6 This is a schematic diagram of the top structure of the aeration and separation components; Figure 7 This is a schematic diagram of the bottom structure of the aeration and separation components; Figure 8 for Figure 1 Enlarged view of point A in the middle; Figure 9 for Figure 6 Enlarged view of point B in the middle; In the diagram: 1. Filter chamber; 11. Water flow channel; 12. Dam; 2. Treatment chamber; 21. Aeration assembly; 23. Protruding pipe; 231. Filter plate; 24. Annular chamber; 241. Jet nozzle; 242. Air delivery chamber; 243. Rotating ring; 244. Rotating bar; 22. Separation assembly; 25. Separation chamber; 251. Separation hole; 26. Liquid storage chamber; 27. Rotation chamber; 271. Water flow hole; 272. Gear ring; 273. Opening and closing plate; 28. Impurity chamber; 29. ​​Gear; 3. Pumping assembly; 31. Air inlet; 32. Air pipe; 4. Connecting assembly; 41. Hemispherical bowl; 42. Connecting pipe; 43. Rotating shaft; 431. Rotating plate; 44. Actuating plate; 441. Water outlet. Detailed Implementation

[0026] 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.

[0027] Example: Figures 1-9 As shown, the present invention provides a technical solution: a wastewater treatment device for printing ink, including a filter chamber 1 and a treatment chamber 2. The treatment chamber 2 includes an aeration component 21 and a separation component 22. The aeration component 21 is located in the middle of the filter chamber 1, and the separation component 22 is located at the bottom of the filter chamber 1. The aeration component 21 and the separation component 22 are in communication. The aeration assembly 21 consists of a protruding pipe 23 and an annular cavity 24. The upper end of the protruding pipe 23 is connected to the filter cavity 1. The annular cavity 24 is located outside the upper end of the protruding pipe 23. A pumping assembly 3 is installed inside the protruding pipe 23 and the annular cavity 24. The pumping assembly 3 is connected to the annular cavity 24. The separation assembly 22 consists of several separation chambers 25, each of which is connected to the bottom of the protruding tube 23. A liquid storage chamber 26 is provided around each separation chamber 25 and is connected to the separation chamber 25. A rotating chamber 27 is provided inside each separation chamber 25 and is connected to the separation chamber 25. An impurity chamber 28 is provided at the bottom of the rotating chamber 27 and is connected to the impurity chamber 28.

[0028] In one specific embodiment of the present invention, the outer wall of the filter chamber 1 is provided with a plurality of water channels 11, and a dam 12 is provided between the water channels 11 and the filter chamber 1. The top of the annular cavity 24 and the top of the dam 12 are on the same plane, and a filter plate 231 is provided at the upper end of the protruding pipe 23.

[0029] In one specific embodiment of the present invention, a plurality of jet nozzles 241 are provided on the side of the annular cavity 24 away from the protruding pipe 23. An air supply chamber 242 is provided inside the annular cavity 24, and the air supply chamber 242 is connected to the plurality of jet nozzles 241. A rotating ring 243 is provided on the outer side of the annular cavity 24, and a plurality of rotating bars 244 are provided on the rotating ring 243. The rotating bars 244 are rotatably connected to the outer wall of the annular cavity 24, and the rotating ring 243 is driven by electromagnetic force.

[0030] In one specific embodiment of the present invention, the separation chamber 25 is provided with a plurality of separation holes 251 at one end near the liquid storage chamber 26, and the rotating chamber 27 is provided with a plurality of water flow holes 271 on its wall surface. The water flow holes 271 are connected to the liquid storage chamber 26 through the separation holes 251. A power device (power device is an electric motor) is provided at the bottom of the liquid storage chamber 26. The power device is connected to a gear 29. A gear ring 272 is provided at the bottom of the rotating chamber 27. The gear 29 and the gear ring 272 mesh and drive each other. The rotating chamber 27 is rotatably connected to the separation chamber 25. An opening and closing plate 273 is also provided at the bottom of the rotating chamber 27. The opening and closing plate 273 is rotatably connected to the rotating chamber 27 and is driven by electric control.

[0031] In one specific embodiment of the present invention, the pumping assembly 3 includes an air inlet 31, an air pipe 32 and a pump device. The air inlet 31 is located above the filter chamber 1. The air pipe 32 passes through the filter chamber 1, the protruding pipe 23 and the annular cavity 24 in sequence. The two ends of the air pipe 32 are respectively connected to the air inlet 31 and the air delivery chamber 242. The air pipe 32 is connected to the pump device.

[0032] In one specific embodiment of the present invention, a connecting group 4 is provided between the protruding tube 23 and the separation chamber 25. The connecting group 4 consists of a hemispherical bowl 41 and several connecting tubes 42. The hemispherical bowl 41 is located at the lower end of the protruding tube 23 and is connected to the protruding tube 23. Several connecting tubes 42 are located on the side of the hemispherical bowl 41 away from the protruding tube 23. One end of the connecting tube 42 is connected to the hemispherical bowl 41, and the other end of the connecting tube 42 is connected to the separation chamber 25. Each connecting tube 42 is provided with a solenoid valve.

[0033] In one specific embodiment of the present invention, a rotating shaft 43 is provided inside the hemispherical bowl 41. The rotating shaft 43 extends towards the side near the upper end of the protruding tube 23. A plurality of rotating plates 431 are provided on the side of the rotating shaft 43 near the upper end of the protruding tube 23. The axis of the rotating plates 431 forms an angle with the axis of the rotating shaft 43. The rotating plates 431 are rotatably connected to the protruding tube 23 and the annular cavity 24.

[0034] In one specific embodiment of the present invention, a plurality of actuating plates 44 are provided on the side of the rotating shaft 43 near the hemispherical bowl 41. The actuating plates 44 are rotatably connected to the hemispherical bowl 41. A plurality of water outlets 441 are provided between two adjacent actuating plates 44. The water outlets 441 are connected to a water conveying assembly (the water conveying assembly is a water pump).

[0035] A treatment process for a wastewater treatment device for printing ink, the treatment process comprising the following specific steps: S1. Wastewater is transported from the flow channel 11 to the filter chamber 1 through the dam 12. S2. The aeration gas is delivered to the jet nozzle 241 through the gas delivery chamber 242 and finally delivered to the filter chamber 1 for aeration treatment. S3. The wastewater after aeration flows through the loop cavity 24 to the protruding pipe 23 and pushes the rotating bar 431 to rotate during the process of being conveyed through the protruding pipe 23. S4. The rotating bar 431 drives the agitator plate 44 through the rotating shaft 43 to stir the wastewater and flocculant, and uses the agitator plate 44 to transport the wastewater to the connecting pipe 42. S5. Wastewater is transported to the rotating chamber 27 through the connecting pipe 42 for centrifugal separation treatment; S6. The separated wastewater is transported to the storage chamber 26, and the impurities are transported to the impurity chamber 28.

[0036] Working principle of the invention: Wastewater is conveyed to the filter chamber 1 through the flow channel 11. During the flow, the wastewater first flows past the dam 12 and then flows down the dam 12 towards the side closest to the filter chamber 1. Because the side of the dam 12 closest to the filter chamber 1 has a slope, when the wastewater flows to the junction of the bottom of the slope and the bottom of the filter chamber 1, a hydraulic jump occurs at the junction, causing the wastewater to tumble and mix with the air. As wastewater is continuously injected into the filter chamber 1, the liquid level in the filter chamber 1 rises continuously. Large particles of impurities floating in the wastewater are blocked by the dam 12, resulting in the first separation of impurities. Since the top of the annular cavity 24 and the top of the dam 12 are on the same plane, when the height of the wastewater liquid level in the filter chamber 1 is on the same plane as the height of the top of the annular cavity 24, the wastewater will flow through the filter chamber 1, through the annular cavity 24, and into the protruding pipe 23. During the flow, it will flow through the filter plate 231, and then the wastewater will undergo a second filtration when it flows through the filter plate 231, filtering out the impurities floating in the wastewater. As the wastewater level in the filter chamber 1 rises, the pump is started by the controller. The pump draws in outside air, which is then delivered to the air pipe 32 through the air inlet 31. The air then travels along the air pipe 32 to the air delivery chamber 242, and finally through the air delivery chamber 242 to the jet nozzle 241 and is ejected. This means that the wastewater flowing from the edge of the filter chamber 1 to the center of the filter chamber 1 needs to undergo multi-directional aeration when it flows through the annular cavity 24. The aerated wastewater then flows through the annular cavity 24 to the protruding pipe 23. During the aeration process from the jet nozzle 241 to the filter chamber 1, the controller controls the electromagnetic drive to rotate the rotating ring 243. As the rotating ring 243 rotates, it drives several rotating bars 244 to rotate. During the rotation, the rotating bars 244 contact the outer wall of the annular cavity 24. On the one hand, this can push the wastewater in the filter chamber 1 to flow towards the protruding pipe 23. On the other hand, it can clean the outer wall of the annular cavity 24 to prevent impurities from blocking the jet nozzle 241 and causing the gas to be unable to be delivered. It can also drive the mixing and stirring of wastewater and aeration gas. Wastewater enters the hemispherical bowl 41 through the protruding pipe 23, then flows through the hemispherical bowl 41 into the connecting pipe 42, and finally enters the rotating chamber 27 through the connecting pipe 42 for separation treatment. Since each connecting pipe 42 is equipped with a solenoid valve, when a rotating chamber 27 malfunctions, the corresponding connecting pipe 42 can be closed by the solenoid valve, so that wastewater will not enter the rotating chamber 27 through the connecting pipe 42 for separation treatment. When wastewater flows into the protruding pipe 23 through the filter plate 231, the wastewater will flow along the wall of the protruding pipe 23, so that the wastewater will encounter the rotating plate 431 during the flow. Since the axis of the rotating plate 431 forms an angle with the axis of the rotating shaft 43, the wastewater will push the rotating plate 431 to rotate during the flow. In turn, the rotating plate 431 drives the rotating shaft 43 to rotate during the rotation. The rotating shaft 43 drives the actuating plate 44 of the hemispherical bowl 41 to rotate during the rotation. As the actuating plate 44 rotates under the action of the rotating shaft 43, it conveys wastewater to several connecting pipes 42. At the same time, the water conveying component extracts flocculant and conveys it through the pipe to the outlet 441. Finally, it conveys the flocculant to the space between two adjacent actuating plates 44 through the outlet 441. Since the wastewater enters the space between two adjacent actuating plates 44 first when it enters the connecting pipe 42, the flocculant comes into contact with the wastewater in the narrow space. Furthermore, the actuating plate 44 rotates in the hemispherical bowl 41, which also causes the actuating plate 44 to mix the flocculant and the wastewater. Thus, a small amount of flocculant can be used to complete the flocculation treatment of impurities in the wastewater. After the wastewater enters the rotating chamber 27 through the connecting pipe 42, the controller starts the power unit, which drives the gear 29 to rotate. During the rotation of the gear 29, it meshes with the gear ring 272, which in turn drives the rotating chamber 27 to rotate. During the rotation of the rotating chamber 27, the separation chamber 25 is stationary. Consequently, the water flow hole 271 and the separation hole 251 are in a reciprocating motion of being connected and disconnected. When the water flow hole 271 and the separation hole 251 are connected, the wastewater in the rotating chamber 27 is transported to the storage chamber 26 through the water flow hole 271 and the separation hole 251, while the flocculated impurities remain in the rotating chamber 27. When one of the rotating chambers 27 malfunctions, the water flow hole 271 and the separation hole 251 are misaligned to disengage the water flow hole 271 from the separation hole 251, preventing the wastewater in the storage chamber 26 from flowing back into the malfunctioning rotating chamber 27. When the impurities in the rotating chamber 27 are full, the controller closes the solenoid valve in the connecting pipe 42 corresponding to the rotating chamber 27, and then opens the opening and closing plate 273 at the bottom of the rotating chamber 27. As a result, the impurity rotating chamber 27 moves under the action of rotation and gravity, causing the impurities to detach from the rotating chamber 27 and be transported to the impurity chamber 28. After the impurities are detached, the opening and closing plate 273 closes again, and the solenoid valve in the connecting pipe 42 opens again, and the rotating chamber 27 rotates and separates the wastewater again. The separated wastewater is transported to the storage chamber 26, while the impurities are transported to the impurity chamber 28.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for treating printing ink wastewater, characterized in that: It includes a filter chamber (1) and a treatment chamber (2). The treatment chamber (2) includes an aeration component (21) and a separation component (22). The aeration component (21) is located in the middle of the filter chamber (1), and the separation component (22) is located at the bottom of the filter chamber (1). The aeration component (21) and the separation component (22) are connected. The aeration assembly (21) consists of a protruding pipe (23) and an annular cavity (24). The upper end of the protruding pipe (23) is connected to the filter cavity (1). The annular cavity (24) is located on the outer side of the upper end of the protruding pipe (23). A pumping assembly (3) is provided inside the protruding pipe (23) and the annular cavity (24). The pumping assembly (3) is connected to the annular cavity (24). The separation assembly (22) consists of several separation chambers (25), which are connected to the bottom of the protruding tube (23). A liquid storage chamber (26) is provided around the separation chamber (25), and the liquid storage chamber (26) is connected to the separation chamber (25). A rotating chamber (27) is provided inside the separation chamber (25), and the rotating chamber (27) is connected to the separation chamber (25). An impurity chamber (28) is provided at the bottom of the rotating chamber (27), and the rotating chamber (27) is connected to the impurity chamber (28).

2. The printing ink wastewater treatment device according to claim 1, characterized in that: The annular cavity (24) has several jet nozzles (241) on the side away from the protruding pipe (23). The annular cavity (24) has an air supply chamber (242) inside it, which is connected to the several jet nozzles (241). The annular cavity (24) has a rotating ring (243) on its outer side, and several rotating bars (244) are provided on the rotating ring (243). The rotating bars (244) are rotatably connected to the outer wall of the annular cavity (24). The rotating ring (243) is driven by electromagnetic force.

3. The printing ink wastewater treatment device according to claim 2, characterized in that: The pumping assembly (3) includes an air inlet (31), an air pipe (32), and a pump device. The air inlet (31) is located above the filter chamber (1). The air pipe (32) passes through the filter chamber (1), the protruding pipe (23), and the annular cavity (24) in sequence. The two ends of the air pipe (32) are connected to the air inlet (31) and the air delivery chamber (242), respectively. The air pipe (32) is connected to the pump device.

4. The printing ink wastewater treatment device according to claim 1, characterized in that: A connecting group (4) is provided between the protruding tube (23) and the separation chamber (25). The connecting group (4) consists of a hemispherical bowl (41) and several connecting tubes (42). The hemispherical bowl (41) is located at the lower end of the protruding tube (23) and is connected to the protruding tube (23). Several connecting tubes (42) are located on the side of the hemispherical bowl (41) away from the protruding tube (23). One end of the connecting tube (42) is connected to the hemispherical bowl (41), and the other end of the connecting tube (42) is connected to the separation chamber (25). Each connecting tube (42) is equipped with a solenoid valve.

5. The printing ink wastewater treatment device according to claim 4, characterized in that: The hemispherical bowl (41) is provided with a rotating shaft (43), which extends towards the side near the upper end of the protruding tube (23). Several rotating plates (431) are provided on the side of the rotating shaft (43) near the upper end of the protruding tube (23). The axis of the rotating plate (431) forms an angle with the axis of the rotating shaft (43). The rotating plate (431) is rotatably connected to the protruding tube (23) and the annular cavity (24).

6. The printing ink wastewater treatment device according to claim 5, characterized in that: The rotating shaft (43) is provided with several actuating plates (44) on the side near the hemispherical bowl (41). The actuating plates (44) are rotatably connected to the hemispherical bowl (41). Several water outlets (441) are provided between two adjacent actuating plates (44), and the water outlets (441) are connected to a water conveying component.

7. The printing ink wastewater treatment device according to claim 1, characterized in that: The separation chamber (25) has several separation holes (251) at one end near the liquid storage chamber (26). The rotating chamber (27) has several water flow holes (271) on its wall. The water flow holes (271) are connected to the liquid storage chamber (26) through the separation holes (251). The liquid storage chamber (26) has a power device at its bottom. The power device is connected to a gear (29). The rotating chamber (27) has a gear ring (272) at its bottom. The gear (29) meshes with the gear ring (272) for transmission. The rotating chamber (27) is rotatably connected to the separation chamber (25). The rotating chamber (27) also has an opening and closing plate (273) at its bottom. The opening and closing plate (273) is rotatably connected to the rotating chamber (27). The opening and closing plate (273) is driven by electric control.

8. The printing ink wastewater treatment device according to claim 1, characterized in that: The outer wall of the filter chamber (1) is provided with several water channels (11), and a dam (12) is provided between the water channels (11) and the filter chamber (1). The top of the annular cavity (24) and the top of the dam (12) are on the same plane, and a filter plate (231) is provided at the upper end of the protruding pipe (23).

9. The treatment process applied to the printing ink wastewater treatment device as described in any one of claims 1-8, characterized in that: The processing technology includes the following specific steps: S1. Wastewater is transported from the water flow channel (11) to the filter chamber (1) through the dam (12); S2. The aeration gas is delivered to the jet nozzle (241) through the gas delivery chamber (242) and finally delivered to the filter chamber (1) for aeration treatment; S3. The wastewater after aeration flows through the loop cavity (24) to the protruding pipe (23) and pushes the rotating bar (431) to rotate during the process of being transported through the protruding pipe (23); S4. The rotating bar (431) drives the agitator (44) through the rotating shaft (43) to stir the wastewater and flocculant, and uses the agitator (44) to transport the wastewater to the connecting pipe (42); S5. Wastewater is transported to the rotating chamber (27) through the connecting pipe (42) for centrifugal separation treatment; S6. The separated wastewater is transported to the storage chamber (26), and the impurities are transported to the impurity chamber (28).

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