Multi-stage treatment equipment for printing waste liquid

Abstract

The invention discloses printing waste liquid multi-stage treatment equipment which comprises a centrifugal tank, an oxidation settling tank, an activated carbon adsorption tank, a first booster pump, a second booster pump and an air flotation mechanism. The top end and the bottom end of the inner side of the centrifugal tank are each sleeved with a supporting bearing, and the inner sides of the supporting bearings are sleeved with an inner tank; a plurality of mounting seats are fixedly mounted at the bottom of an inner cavity of the centrifugal tank, supporting balls are mounted on the inner sides of the mounting seats in a rolling manner, and a plurality of ball supporting seats are fixedly mounted at the top of the centrifugal tank; according to the scheme, when air flow is guided out through the Y-shaped air conveying pipe and the branch pipe, the air flow is shunted through the micropores of the microporous metal sintering mesh plug, compressed air is dispersed into tiny bubbles through the porous material, and the air is pressurized and then passes through the pores of the aeration head to form bubbles with the diameter of 50-300 microns to be matched with centrifugation to separate oil emulsion waste liquid; therefore, the separation efficiency is improved, and follow-up operation can be conveniently matched.

Description

Technical Field

[0001] The invention relates to the technical field of multi-stage treatment of printing wastewater, in particular to a multi-stage treatment device for printing wastewater. Background Art

[0002] Printing waste liquid is wastewater generated during the printing process. It mainly contains pollutants such as ink particles, organic solvents (such as ethanol, toluene), pigments, resins, surfactants, etc. It has the characteristics of complex composition, high chroma, and difficulty in degradation. If it is discharged directly without treatment, it will cause pollution to water bodies and soil. It is necessary to remove harmful substances through physical (such as centrifugation, flotation), chemical (such as coagulation, oxidation) or biological treatment processes to achieve standard discharge or recycling.

[0003] During the printing process, a lot of wastewater is generated due to various process requirements. These wastewaters contain a lot of organic solvents such as ink and water-based ink. Direct discharge will affect the environment due to harmful substances. Usually, they need to be treated before discharge. The existing multi-stage treatment usually uses centrifugation and flotation to reduce the emulsification of the ink and promote stratification for subsequent treatment. However, the existing multi-stage treatment equipment is usually a single-process device, which does not completely break the emulsion and has low oil removal efficiency. In addition, multiple devices need to be set up. Adding treatment processes during the treatment process will reduce the treatment efficiency and make it difficult to cooperate with multiple processes for multi-stage treatment, thereby reducing the use effect. Based on this, a multi-stage treatment device for printing waste liquid is proposed. Summary of the Invention

[0004] The object of the present invention is to provide a multi-stage treatment device for printing waste liquid to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-stage treatment device for printing waste liquid, comprising a centrifugal tank, an oxidation sedimentation tank, an activated carbon adsorption tank, a booster pump 1, a booster pump 2 and an air flotation mechanism, wherein the top and bottom ends of the inner side of the centrifugal tank are both sleeved with support bearings, the inner side of the support bearing is sleeved with an inner tank, a plurality of mounting seats are fixedly installed at the bottom of the inner cavity of the centrifugal tank, support balls are rollingly installed on the inner side of the mounting seats, a plurality of ball support seats are fixedly installed on the top of the centrifugal tank, a driven gear ring is fixedly sleeved on the outer side of the top of the inner tank, and the top of the centrifugal tank is fixedly sleeved with a driven gear ring. A gear speed increaser is fixedly installed on the outer side of the end, a transmission motor is fixedly installed on the outer side of the top of the centrifugal tank, a support ring is fixedly installed on the outer side of the top of the centrifugal tank, two hydraulic synchronous telescopic rods are fixedly installed on the top of the support ring, and a movable cover is fixedly installed on the output end of the two hydraulic synchronous telescopic rods. The top of the movable cover is connected to a primary coarse filtration mechanism, the top of the movable cover is connected to an adding bucket, and the top of the movable cover is connected to a connector. The inner side of the bottom end of the inner tank is sleeved with a sealed bearing, and the inner side of the sealed bearing is sleeved with a diversion mechanism.

[0006] The diversion mechanism includes a middle tube, the outer side of the middle tube is movably sleeved with a sealing support member, the outer side of the middle tube is fixedly sleeved with a rotating seal 2, the interior of the middle tube is fixedly installed with a partition, one side of the middle tube and the bottom of the partition are connected with an ink outlet pipe, the other side of the middle tube and the bottom of the partition are connected with a guide tube 1, the top of the middle tube is sealed, one side of the top of the inner cavity of the middle tube is fixedly installed with an electric-controlled telescopic rod 1, the output end of the electric-controlled telescopic rod 1 is fixedly installed with a semi-annular baffle, one side of the interior of the middle tube is provided with a plurality of high-position connecting holes, the other side of the top of the inner cavity of the middle tube is fixedly installed with an electric-controlled telescopic rod 2, the output end of the electric-controlled telescopic rod 2 is fixedly installed with a semi-annular sealing strip, the other side of the interior of the middle tube is provided with a plurality of low-position connecting holes, and wing baffles are fixedly installed on both sides of the middle tube, and a plurality of guide holes are provided inside the wing baffles.

[0007] The flotation mechanism includes a pressurized air pump and a Y-shaped air pipe. The output end of the pressurized air pump is connected to the input end of the Y-shaped air pipe. The Y-shaped air pipe is fixedly passed through the ink outlet pipe and the guide pipe and extends to the inner wall of the middle pipe. The opposite sides of the Y-shaped air pipe are connected to a number of branch pipes, and the output ends of the branch pipes are fixedly installed with microporous metal sintered mesh plugs.

[0008] Preferably, the mounting seats are evenly distributed circumferentially on opposite sides of the centrifugal tank and the inner tank, the outer sides of the supporting balls are in rolling contact with the bottom of the inner tank, a spiral plate 1 is fixedly sleeved inside the inner tank, and the ball support seats are evenly distributed circumferentially on the top of the centrifugal tank, and the top of the ball support seats are in rolling contact with the bottom of the driven gear ring.

[0009] Preferably, the input end of the gear speed increaser is transmission-connected to a driven bevel gear, the output end of the gear speed increaser is transmission-connected to an output gear, the output end of the transmission motor is transmission-connected to an active bevel gear, the outer side of the active bevel gear and the outer side of the driven bevel gear are meshed and transmission-connected, the outer side of the output gear and the outer side of the driven gear ring are meshed and transmission-connected, and the gear speed increaser is fixedly mounted on the outer side of the support ring.

[0010] Preferably, the primary coarse filtration mechanism includes a coarse filter box, the top of the coarse filter box is connected to a corrugated input pipe, the interior of the coarse filter box is obliquely inserted with an inclined coarse filter screen, one side of the bottom end of the coarse filter box is connected to an accumulation discharge pipe, the accumulation discharge pipe is L-shaped and extends vertically to the outside of the centrifuge tank, the bottom of the accumulation discharge pipe is threadedly connected to a sealing cover, a sealed box door is movably installed on the front of the coarse filter box, and the bottom of the coarse filter box is connected to the bottom of the movable cover 1 through a pipe passing through the movable cover 1.

[0011] Preferably, the sealing bearing is sleeved on the outside of the middle tube, the sealing support member is fixedly mounted on the bottom of the inner cavity of the inner tank, the inner side of the top of the sealing support member is fixedly sleeved with a rotating seal member 1, the rotating seal member 1 is movably sleeved on the opposite sides of the middle tube and the rotating seal member 2, the middle tube is fixedly penetrated through the centrifugal tank and extends to the bottom of the centrifugal tank, the outer side of the bottom end of the middle tube is fixedly sleeved with an outer bracket, and the outer bracket is fixedly mounted on the bottom of the inner cavity of the centrifugal tank.

[0012] Preferably, the high-position communicating holes are linearly and evenly distributed on one side of the interior of the middle tube, the semi-annular baffle is movably sleeved on the interior of the middle tube and the opposite side of the partition, the size of the semi-annular baffle is larger than the size of the high-position communicating holes, the semi-annular sealing strip is movably sleeved on the opposite side of the middle tube and the partition, the size of the semi-annular sealing strip is larger than the size of the low-position communicating holes, a through groove compatible with the Y-shaped gas pipe and the branch pipe is provided inside the semi-annular sealing strip, and the semi-annular sealing strip is slidably sleeved on the outside of the Y-shaped gas pipe through the through groove, the guide holes are linearly and evenly distributed inside the wing baffle, and the high-position communicating holes and the semi-annular baffle are distributed inside the middle tube in a high and low staggered manner.

[0013] Preferably, the microporous metal sintered mesh plug is sleeved inside the guide hole, the branch pipes are linearly and evenly distributed on opposite sides of the Y-shaped gas pipe, and the specifications and dimensions of the branch pipes are compatible with those of the guide hole.

[0014] Preferably, the input end of the boost pump 1 is connected to one end of the guide pipe 1, the output end of the boost pump 1 is connected to a connecting pipe 1, the end of the connecting pipe 1 away from the boost pump 1 is connected to the interior of the oxidation precipitation tank, the interior of the oxidation precipitation tank is provided with a constant temperature interlayer, the interior of the constant temperature interlayer is installed with an electric heater, two hydraulic synchronous telescopic rods 2 are fixedly installed on the outer side of the top of the oxidation precipitation tank through a bracket, the output ends of the two hydraulic synchronous telescopic rods 2 are fixedly installed with a sealing cover 2, the bottom of the sealing cover 2 is fixedly installed with a servo motor, the output end of the servo motor is transmission-connected with a stirring rod, the outer side of the bottom end of the stirring rod is fixedly installed with a spiral stirring piece, and the inner wall of the oxidation precipitation tank is fixedly sleeved with a spiral plate 2.

[0015] Preferably, the input end of the boost pump 2 is connected to the guide pipe 2, the end of the guide pipe 2 away from the boost pump 2 is connected to the interior of the oxidation precipitation tank, the output end of the boost pump 2 is connected to the connecting pipe 2, the end of the connecting pipe 2 away from the boost pump 2 is connected to the bellows, the bottom end of the bellows is connected to the top sealing cover, the top sealing cover is sealed with the activated carbon adsorption tank by flanges and bolts, the bottom of the activated carbon adsorption tank is connected to the discharge connecting pipe, four legs are fixedly installed on the bottom of the activated carbon adsorption tank, a hollow support frame is placed at the bottom of the inner cavity of the activated carbon adsorption tank, a stainless steel mesh bag tube is movably connected to the top of the hollow support frame and the inner side of the activated carbon adsorption tank, and an activated carbon adsorption filling layer is provided on the inner side of the stainless steel mesh bag tube.

[0016] Preferably, valves are provided inside the adding hopper, ink outlet pipe, guide pipe 1, connecting pipe 1, Y-shaped air supply pipe, guide pipe 2 and discharge connecting pipe, and the top of the sealing cover 2 is connected with two connectors.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the device is in use, the user connects the coarse filter output device to the primary coarse filter mechanism, and the oil is discharged into the interior of the primary coarse filter mechanism after coarse filtration. After the primary coarse filter mechanism filters out possible impurities, the oil is diverted to the interior of the centrifugal tank. After avoiding partial blockage by impurities, the transmission motor drives the gear speed increaser through the gear speed increaser to transmit the driven gear ring and drive the inner tank to rotate. The booster air pump starts the air flow and outputs it to the interior of the branch pipe through the Y-shaped air pipe. The air flow is micro-bubbled out through the microporous metal sintered mesh plug, prompting the liquid inside the inner tank to be centrifuged and separated by bubbles, prompting the emulsified oil to be stratified. After the liquid is stratified, it is guided into the interior of the oxidation precipitation tank through the starting pump of the booster pump 1, so that additives are added to the interior of the oxidation precipitation tank for precipitation or oxidation reaction treatment. The number of oxidation precipitation tanks and activated carbon adsorption tanks can be set to multiple. Finally, the oil is pumped into the interior of the activated carbon adsorption tank by the booster pump 2 for preliminary filtration and adsorption treatment, and finally introduced into the membrane treatment equipment for treatment and discharge. The overall oil emulsification and separation effect is good, the treatment is convenient, and the treatment efficiency is increased.

[0018] 2. In this solution, when the airflow is discharged through the Y-shaped air pipe and branch pipes, it is diverted through the micropores of the microporous metal sintered mesh plug. The porous material disperses the compressed air into tiny bubbles. After being pressurized, the air passes through the pores of the aeration head, forming bubbles with a diameter of 50-300 microns. These bubbles are used to cooperate with centrifugal separation to separate oil-emulsion waste liquid, thereby increasing separation efficiency and facilitating subsequent operations.

[0019] 3. In this solution, after the emulsion is separated inside the inner tank, the liquid is diverted through the middle pipe, partition and guide pipe 1, pumped out by booster pump 1 and introduced into the interior of the oxidation precipitation tank through connecting pipe 1, and precipitated or oxidized in the oxidation precipitation tank. The generated airflow is discharged through the exhaust end of the sealing cover 2, and the servo motor is started to drive the stirring rod and spiral stirring element to rotate to stir and mix the liquid, which is convenient for coordinated operation and convenient for the next level of processing after emulsion separation, increases the relative stability of the structure, and facilitates multi-stage processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the front three-dimensional appearance structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional appearance structure of the present invention when viewed from the rear and upward.

[0022] Figure 3 It is a front sectional three-dimensional structural schematic diagram of the present invention.

[0023] Figure 4 It is a front cross-sectional schematic diagram of the internal structure of the present invention.

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the centrifugal tank of the present invention from a top view.

[0025] Figure 6 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0026] Figure 7 For the present invention Figure 3 Enlarged structural diagram at point B in the middle.

[0027] Figure 8 For the present invention Figure 4 Enlarged structural diagram at point C in the middle.

[0028] Figure 9 For the present invention Figure 4 Enlarged structural diagram at point D in the middle.

[0029] Figure 10 For the present invention Figure 4 Enlarged structural diagram at E in the middle.

[0030] Figure 11 For the present invention Figure 4 Enlarged structural diagram at F in the middle.

[0031] Figure 12 For the present invention Figure 4 Enlarged structural diagram at G in the middle.

[0032] Figure 13 For the present invention Figure 5Enlarged structural diagram at H in the middle.

[0033] In the figure: 1. Centrifugal tank; 101. Movable cover 1; 102. Driven gear ring; 103. Hydraulic synchronous telescopic rod 1; 104. Adding bucket; 105. Connector 1; 106. Spiral plate 1; 107. Inner tank; 108. Support bearing; 109. Mounting seat; 110. Support ball; 111. Sealing bearing; 112. Sealing support member; 113. Rotating seal 1; 114. Rotating seal 2; 115. Ball support seat; 116. Support ring; 2. Oxidation sedimentation tank; 201. Sealing cover (2); 202. Stirring rod; 203. Hydraulic synchronous telescopic rod (2); 204. Spiral stirring element; 205. Servo motor; 206. Constant temperature interlayer; 207. Electric heater; 208. Spiral plate (2); 3. Activated carbon adsorption tank; 301. Support legs; 302. Top sealing cover; 303. Discharge connecting pipe; 304. Activated carbon adsorption filling layer; 305. Hollow support frame; 306. Stainless steel mesh bag; 4. Primary coarse filter Structure; 401, coarse filter box; 402, corrugated inlet pipe; 403, accumulation discharge pipe; 404, inclined coarse filter screen; 5, gear speed increaser; 501, driven bevel gear; 502, output gear; 6, booster pump 1; 601, connecting pipe 1; 602, diversion pipe 1; 7, booster pump 2; 701, connecting pipe 2; 702, diversion pipe 2; 703, bellows; 8, ink outlet pipe; 9, air flotation mechanism; 901, booster air pump; 902, Y-shaped air pipe ; 903, branch pipe; 904, microporous metal sintered mesh plug; 10, diversion mechanism; 1001, middle pipe; 1002, partition; 1003, outer bracket; 1004, wing baffle; 1005, high-position connecting hole; 1006, electric-controlled telescopic rod one; 1007, semi-annular baffle frame; 1008, electric-controlled telescopic rod two; 1009, semi-annular sealing strip; 1010, guide hole; 1011, low-position connecting hole; 11, transmission motor; 1101, active bevel gear. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figures 1-13The present invention provides a technical solution: a multi-stage treatment device for printing waste liquid, comprising a centrifugal tank 1, an oxidation sedimentation tank 2, an activated carbon adsorption tank 3, a booster pump 1 6, a booster pump 2 7 and an air flotation mechanism 9, wherein the top and bottom ends of the inner side of the centrifugal tank 1 are sleeved with support bearings 108, the inner side of the support bearing 108 is sleeved with an inner tank 107, a plurality of mounting seats 109 are fixedly installed at the bottom of the inner cavity of the centrifugal tank 1, a support ball 110 is rollingly installed on the inner side of the mounting seat 109, a plurality of ball support seats 115 are fixedly installed on the top of the centrifugal tank 1, a driven gear ring 102 is fixedly sleeved on the outer side of the top of the inner tank 107, and a plurality of ball support seats 115 are fixedly installed on the top of the centrifugal tank 1. A gear speed increaser 5 is installed, a transmission motor 11 is fixedly installed on the outer side of the top of the centrifugal tank 1, a support ring 116 is fixedly installed on the outer side of the top of the centrifugal tank 1, two hydraulic synchronous telescopic rods 103 are fixedly installed on the top of the support ring 116, and a movable cover 101 is fixedly installed on the output end of the two hydraulic synchronous telescopic rods 103. The top of the movable cover 101 is connected to the primary coarse filtering mechanism 4, the top of the movable cover 101 is connected to the adding bucket 104, the top of the movable cover 101 is connected to the connector 105, the inner side of the bottom end of the inner tank 107 is sleeved with a sealed bearing 111, and the inner side of the sealed bearing 111 is sleeved with a diversion mechanism 10.

[0036] The diversion mechanism 10 includes a middle tube 1001, a sealing support 112 is movably sleeved on the outer side of the middle tube 1001, a rotating seal 114 is fixedly sleeved on the outer side of the middle tube 1001, a partition 1002 is fixedly installed inside the middle tube 1001, the middle tube 1001 and the bottom of the partition 1002 are connected to the ink outlet pipe 8 on one side, the middle tube 1001 and the bottom of the partition 1002 are connected to the guide pipe 1 602 on the other side, the top of the middle tube 1001 is blocked, and an electric control telescopic rod 1006 is fixedly installed on one side of the inner top of the middle tube 1001. A semi-circular baffle 1007 is fixedly installed on the output end of the control telescopic rod 1006, and a plurality of high-position connecting holes 1005 are opened on one side of the interior of the middle tube 1001. An electric-controlled telescopic rod 2 1008 is fixedly installed on the other side of the top of the inner cavity of the middle tube 1001, and a semi-circular sealing strip 1009 is fixedly installed on the output end of the electric-controlled telescopic rod 2 1008. A plurality of low-position connecting holes 1011 are opened on the other side of the interior of the middle tube 1001. Wing baffles 1004 are fixedly installed on both sides of the middle tube 1001, and a plurality of guide holes 1010 are opened inside the wing baffles 1004.

[0037] The flotation mechanism 9 includes a booster air pump 901 and a Y-shaped air pipe 902. The output end of the booster air pump 901 is connected to the input end of the Y-shaped air pipe 902. The Y-shaped air pipe 902 is fixedly passed through the ink outlet pipe 8 and the guide pipe 602 and extends to the inner wall of the middle pipe 1001. The opposite sides of the Y-shaped air pipe 902 are connected to a number of branch pipes 903. The output end of the branch pipe 903 is fixedly installed with a microporous metal sintered mesh plug 904.

[0038] The working principle of the above technical solution is as follows: when in use, the user connects the primary coarse filter mechanism 4 to the external coarse filter output device, and the coarse filter is discharged into the interior of the primary coarse filter mechanism 4. After the primary coarse filter mechanism 4 filters out possible impurities, the fluid is diverted to the interior of the centrifugal tank 1. After avoiding partial blockage by impurities, the transmission motor 11 starts to drive the gear speed increaser 5 through the gear speed increaser 5 to drive the driven gear ring 102 and drive the inner tank 107 to rotate. The inner tank 107 maintains a relatively stable position under the support of the support bearing 108 and the support ball 110. At the same time, the hydraulic synchronous telescopic rod 103 retracts to drive the bottom of the movable cover 101 to move in contact with the inner side of the inner tank 107, thereby reducing liquid overflow and centrifuging the liquid. At the same time, the booster air pump 901 starts the air flow to be output to the inside of the branch pipe 903 through the Y-shaped air pipe 902, and the air flow is guided out in the form of microbubbles through the microporous metal sintered mesh plug 904, so as to promote the centrifugation and bubble separation of the liquid inside the inner tank 107 and promote the stratification of the emulsified oil. When the liquid is stratified, the electric control telescopic rod 1006 retracts The semi-annular baffle 1007 is driven to move upward to partially leak out the high-position communicating hole 1005. At this time, the upper oil flows into the middle tube 1001 and one side of the partition 1002 through the high-position communicating hole 1005, and then is exported to the collection device through the ink outlet pipe 8. After the separation, the electric telescopic rod 1006 is reset and the electric telescopic rod 2 1008 is retracted to drive the semi-annular blocking strip 1009 to move upward, thereby leaking out the low-position communicating hole 1011. At this time, the lower water flows into the middle tube 1001 and the partition 1002 through the low-position communicating hole 1011. 02, and then discharged through the guide pipe 1 602, and pumped into the interior of the oxidation sedimentation tank 2 by starting the booster pump 1 6, so that additives are added to the interior of the oxidation sedimentation tank 2 for precipitation or oxidation reaction treatment, and the number of oxidation sedimentation tanks 2 and activated carbon adsorption tanks 3 can be set to multiple, and finally pumped into the interior of the activated carbon adsorption tank 3 by the booster pump 2 7 for preliminary filtration and adsorption treatment, and finally introduced into the membrane treatment equipment for treatment and discharge, the overall oil emulsification and separation effect is good, it is easy to treat, and the treatment efficiency is increased.

[0039] In another embodiment, Figures 1-10 As shown, the mounting seats 109 are evenly distributed on the opposite sides of the centrifugal tank 1 and the inner tank 107 in a circumferential manner, the outer sides of the supporting balls 110 are in rolling contact with the bottom of the inner tank 107, the inner tank 107 is fixedly sleeved with a spiral plate 106, and the ball support seats 115 are evenly distributed on the top of the centrifugal tank 1 in a circumferential manner, and the top of the ball support seats 115 is in rolling contact with the bottom of the driven gear ring 102.

[0040] The uniform distribution of the mounting seat 109 and the supporting balls 110 facilitates providing relatively stable support for the bottom of the inner tank 107, and the spiral plate 106 facilitates the addition of a blocking structure to the inner wall of the inner tank 107 in conjunction with the wing baffle 1004 when the tank body is centrifuged, which can enhance turbulence and shear force, and help assist in demulsification and separation. The ball support seat 115 provides rolling support for the driven gear ring 102, which facilitates the driven gear ring 102 to maintain a stable position. The overall structure facilitates the inner tank 107 to maintain relative stability, and facilitates relatively stable operation at centrifugal speeds.

[0041] In another embodiment, Figures 1-6 As shown, the input end of the gear speed increaser 5 is connected to the driven bevel gear 501, the output end of the gear speed increaser 5 is connected to the output gear 502, the output end of the transmission motor 11 is connected to the driving bevel gear 1101, the outer side of the driving bevel gear 1101 and the outer side of the driven bevel gear 501 are meshed and connected, the outer side of the output gear 502 and the outer side of the driven gear ring 102 are meshed and connected, and the gear speed increaser 5 is fixedly mounted on the outer side of the support ring 116.

[0042] The gear speed increaser 5 is connected to the active bevel gear 1101 through the driven bevel gear 501 to increase the power of the transmission motor 11 and transmit it to the driven gear ring 102 through the output gear 502, prompting the inner tank 107 to rotate, making it convenient to set the speed through the setting of the gear speed increaser 5 to cooperate with the centrifugal operation.

[0043] In another embodiment, Figures 1-4 As shown, the primary coarse filtration mechanism 4 includes a coarse filter box 401, the top of the coarse filter box 401 is connected to a corrugated inlet pipe 402, an inclined coarse filter screen 404 is obliquely inserted into the interior of the coarse filter box 401, and one side of the bottom end of the coarse filter box 401 is connected to an accumulation discharge pipe 403, which is L-shaped and extends vertically to the outside of the centrifuge tank 1. The bottom of the accumulation discharge pipe 403 is threadedly connected to a sealing cover, and a sealed box door is movably installed on the front of the coarse filter box 401. The bottom of the coarse filter box 401 passes through the movable cover 101 through a pipe and is connected to the bottom of the movable cover 101.

[0044] The corrugated inlet pipe 402 introduces the coarsely filtered waste liquid into the coarse filter box 401. After filtering through the inclined surface of the inclined coarse filter screen 404, the solid matter remaining in the waste liquid, such as flocculent fibers and granular impurities, is filtered to avoid affecting the subsequent process and reduce blockage. The waste liquid is then diverted to the inside of the stacking discharge pipe 403 through the inclined stacking, and the water flows into the inside of the inner tank 107 through the pipeline, thereby performing preliminary coarse filtration on the waste liquid, facilitating subsequent multi-stage treatment and increasing controllability.

[0045] In another embodiment, Figures 1-13As shown, the sealing bearing 111 is sleeved on the outside of the middle tube 1001, the sealing support member 112 is fixedly mounted on the bottom of the inner cavity of the inner tank 107, the inner side of the top of the sealing support member 112 is fixedly sleeved with a rotating seal 113, the rotating seal 113 is movably sleeved on the opposite sides of the middle tube 1001 and the rotating seal 2 114, the middle tube 1001 is fixedly penetrated through the centrifuge tank 1 and extends to the bottom of the centrifuge tank 1, the outer side of the bottom end of the middle tube 1001 is fixedly sleeved with an outer bracket 1003, and the outer bracket 1003 is fixedly mounted on the bottom of the inner cavity of the centrifuge tank 1.

[0046] The sealing bearing 111 provides rotational support for the middle tube 1001. When the inner tank 107 rotates, the middle tube 1001 does not rotate, which facilitates the structure to maintain its position. The middle tube 1001 performs rotational sealing on the sealing bearing 111 through the sealing support 112, the rotating seal 113 and the rotating seal 2 114 to reduce leakage and facilitate the coordination of the structure to maintain relative stability. The middle tube 1001 is reinforced by the outer bracket 1003 and maintains a relatively stable position, which facilitates the coordination of rotation operations.

[0047] In another embodiment, Figures 1-13 As shown, the high-position communicating holes 1005 are linearly and evenly distributed on one side of the interior of the middle tube 1001, the semi-annular baffle 1007 is movably sleeved on the interior of the opposite side of the middle tube 1001 and the partition 1002, the size of the semi-annular baffle 1007 is larger than the size of the high-position communicating holes 1005, the semi-annular blocking strip 1009 is movably sleeved on the opposite side of the middle tube 1001 and the partition 1002, the size of the semi-annular blocking strip 1009 is larger than the size of the low-position communicating holes 1011, the interior of the semi-annular blocking strip 1009 is provided with a through groove compatible with the Y-shaped gas pipe 902 and the branch pipe 903, and the semi-annular blocking strip 1009 is slidably sleeved on the outside of the Y-shaped gas pipe 902 through the through groove, the guide holes 1010 are linearly and evenly distributed on the interior of the wing baffle 1004, and the high-position communicating holes 1005 and the semi-annular baffle 1007 are distributed in a high and low staggered manner inside the middle tube 1001.

[0048] The semi-annular baffle 1007 is slidably connected to one side of the middle tube 1001 and the partition 1002 and blocks the high-position communicating hole 1005. When the semi-annular baffle 1007 is separated from the position of the high-position communicating hole 1005, the high-position communicating hole 1005 leaks out, thereby guiding the liquid into the opposite side of the middle tube 1001 and the partition 1002. The length of movement of the semi-annular baffle 1007 and the number of exposed high-position communicating holes 1005 determine the height and speed of the diversion, which is convenient for discharging in accordance with different layers, such as the semi-annular baffle 1 When the length of 007 is just enough to completely block the linearly distributed high-position communicating holes 1005, if the electric-controlled telescopic rod 1006 retracts and drives the semi-annular blocking frame 1007 to move upward, the lowest high-position communicating hole 1005 will leak out, thereby diverting the liquid out. The connection mode of the semi-annular blocking strip 1009 and the diversion hole 1010 is similar. The difference is that the diversion hole 1010 and the high-position communicating hole 1005 are highly staggered. The high-position communicating hole 1005 diverts the upper liquid, while the diversion hole 1010 diverts the lower liquid, thereby ensuring The protective structure is segmented and layered to guide the flow, which is convenient for coordinating the structure to carry out different layered diversion and discharge, and the semi-annular blocking strip 1009 just blocks the position of the diversion hole 1010 when it moves up and down, and the moving trajectory of the semi-annular blocking strip 1009 covers the position of the Y-shaped gas pipe 902 and the branch pipe 903. The solution is to open a notch on the inner side of the semi-annular blocking strip 1009 so that the operation will not be hindered by the obstruction of the Y-shaped gas pipe 902 when it moves. The Y-shaped air pipe 902 and the branch pipe 903 are arranged in a cross-staggered manner, which will not affect the operation, thereby ensuring that the structure remains relatively stable. The semi-annular baffle 1007 is also provided with a through groove adapted to the Y-shaped air pipe 902 and the branch pipe 903 when it does not affect the structural strength and a supporting structure is installed inside. It is used to pass through the pipe without being affected, and push the structure forward to push and clean the inside of the middle pipe 1001 and the partition 1002, reduce the situation of viscous stratified oil clogging the holes, and indirectly increase the convenience of cleaning and maintenance.

[0049] In another embodiment, Figures 1-13 As shown, the microporous metal sintered mesh plug 904 is sleeved inside the guide hole 1010, and the branch pipes 903 are linearly and evenly distributed on the opposite sides of the Y-shaped gas pipe 902. The specifications and dimensions of the branch pipes 903 are compatible with those of the guide hole 1010.

[0050] As the airflow is directed through Y-shaped air delivery pipe 902 and branch pipe 903, it is diverted through the micropores of microporous sintered metal mesh plug 904. This porous material, such as ceramic, plastic, or a sintered metal plate, disperses the compressed air into tiny bubbles. The pressurized air then passes through the fine pores of the aeration head, forming bubbles with diameters of 50–300 microns. These bubbles are used to separate the oil-emulsion wastewater through centrifugation, thereby increasing separation efficiency and facilitating subsequent operations.

[0051] In another embodiment, Figures 1-4 As shown, the input end of the boost pump 6 is connected to one end of the guide tube 602, and the output end of the boost pump 6 is connected to the connecting tube 601. The end of the connecting tube 601 away from the boost pump 6 is connected to the interior of the oxidation precipitation tank 2. The interior of the oxidation precipitation tank 2 is provided with a constant temperature interlayer 206, and the interior of the constant temperature interlayer 206 is installed with an electric heater 207. Two hydraulic synchronous telescopic rods 203 are fixedly installed on the outer side of the top of the oxidation precipitation tank 2 through a bracket. The output ends of the two hydraulic synchronous telescopic rods 203 are fixedly installed with sealing covers 201, and the bottom of the sealing cover 201 is fixedly installed with a servo motor 205. The output end of the servo motor 205 is transmission-connected to the stirring rod 202, and the outer side of the bottom end of the stirring rod 202 is fixedly installed with a spiral stirring piece 204. The inner wall of the oxidation precipitation tank 2 is fixedly sleeved with a spiral plate 208.

[0052] After the emulsion separation is carried out inside the inner tank 107, the liquid is diverted through the middle pipe 1001, the partition 1002 and the guide pipe 602, pumped out by the booster pump 6 through the connecting pipe 601 and introduced into the interior of the oxidation sedimentation tank 2, and precipitated or oxidized in the oxidation sedimentation tank 2. The number of oxidation sedimentation tanks 2 can be set to multiple, and they can be connected in series or in parallel according to process requirements, and flocculants or oxidants can be added. The generated airflow is discharged through the exhaust end of the sealing cover 201, and is started by the servo motor 205 to drive the stirring rod 202 and the spiral stirring element 204 to rotate to stir and mix the liquid, which is convenient for coordinated operation and convenient for the next level of processing after emulsion separation, thereby increasing the relative stability of the structure and facilitating multi-stage processing.

[0053] In another embodiment, Figures 1-12 As shown, the input end of the boost pump 27 is connected to the guide pipe 2702, the end of the guide pipe 2702 away from the boost pump 27 is connected to the interior of the oxidation precipitation tank 2, the output end of the boost pump 27 is connected to the connecting pipe 2701, the end of the connecting pipe 2701 away from the boost pump 27 is connected to the bellows 703, the bottom end of the bellows 703 is connected to the top sealing cover 302, the top sealing cover 302 is sealed with the activated carbon adsorption tank 3 through flanges and bolts, the bottom of the activated carbon adsorption tank 3 is connected to the discharge connecting pipe 303, four supporting legs 301 are fixedly installed on the bottom of the activated carbon adsorption tank 3, a hollow support frame 305 is placed at the bottom of the inner cavity of the activated carbon adsorption tank 3, a stainless steel mesh bag tube 306 is movably connected to the top of the hollow support frame 305 and the inner side of the activated carbon adsorption tank 3, and an activated carbon adsorption filling layer 304 is provided on the inner side of the stainless steel mesh bag tube 306.

[0054] After treatment in the oxidation precipitation tank 2, the liquid is diverted through the diversion pipe 2 702 and pumped out through the booster pump 2 7, and is led to the interior of the activated carbon adsorption tank 3 through the connecting pipe 2 701 and the bellows 703, and is adsorbed and filtered by the activated carbon adsorption filling layer 304 set inside the activated carbon adsorption tank 3. The hollow support frame 305 and the stainless steel mesh bag tube 306 can be replaced with different materials according to the different components of the waste liquid to be treated, such as zeolite, quartz sand and other filter materials. Similarly, multiple ones can be set in series or parallel for treatment. The structure is easy to use, easy to maintain and clean, and convenient for subsequent ultrafiltration or membrane treatment operations after treatment, which increases the convenience of structural contact and enables the structure to change the connection and operation position according to needs in the case of different waste liquids, thereby increasing flexibility and adaptability.

[0055] In another embodiment, Figures 1-13 As shown, valves are provided inside the adding hopper 104, the ink outlet pipe 8, the guide pipe 1 602, the connecting pipe 1 601, the Y-shaped air supply pipe 902, the guide pipe 2 702 and the discharge connecting pipe 303, and the top of the sealing cover 201 is connected with two connectors.

[0056] The valve can be easily closed when not connected, ensuring that the fluids do not affect each other, and the connector on the top of the sealing cover 201 is used to connect to the airflow collection and processing equipment. For example, some gas will be generated during the oxidation treatment, and overflow can be avoided by diversion treatment, which is convenient for cooperation with other equipment for treatment. The movable setting of the sealing cover 201 and the movable cover 101, and the passage setting for adding agents such as the adding bucket 104 and the connector 105, thereby ensuring the treatment of the printing waste liquid and increasing the convenience of use.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage treatment device for printing waste liquid, comprising a centrifuge tank (1), an oxidation sedimentation tank (2), an activated carbon adsorption tank (3), a first booster pump (6), a second booster pump (7) and an air flotation mechanism (9), characterized in that: The top and bottom ends of the inner side of the centrifugal tank (1) are both sleeved with support bearings (108), the inner side of the support bearings (108) is sleeved with an inner tank (107), a plurality of mounting seats (109) are fixedly installed at the bottom of the inner cavity of the centrifugal tank (1), support balls (110) are rollingly installed on the inner side of the mounting seats (109), a plurality of ball support seats (115) are fixedly installed at the top of the centrifugal tank (1), a driven gear ring (102) is fixedly sleeved on the outer side of the top of the inner tank (107), a gear speed increaser (5) is fixedly installed on the outer side of the top of the centrifugal tank (1), a transmission motor (11) is fixedly installed on the outer side of the top of the centrifugal tank (1), and the A support ring (116) is fixedly installed on the outer side of the top of the centrifugal tank (1), two hydraulic synchronous telescopic rods (103) are fixedly installed on the top of the support ring (116), and a movable cover (101) is fixedly installed on the output end of the two hydraulic synchronous telescopic rods (103). The top of the movable cover (101) is connected to a primary coarse filtering mechanism (4), the top of the movable cover (101) is connected to a adding bucket (104), and the top of the movable cover (101) is connected to a connector (105). The inner side of the bottom end of the inner tank (107) is sleeved with a sealing bearing (111), and the inner side of the sealing bearing (111) is sleeved with a diversion mechanism (10); The diversion mechanism (10) comprises a middle tube (1001), the outer side of the middle tube (1001) is movably sleeved with a sealing support member (112), the outer side of the middle tube (1001) is fixedly sleeved with a second rotating seal member (114), the interior of the middle tube (1001) is fixedly mounted with a partition (1002), one side of the bottom of the middle tube (1001) and the partition (1002) is connected to an ink outlet tube (8), the other side of the bottom of the middle tube (1001) and the partition (1002) is connected to a guide tube (602), the top of the middle tube (1001) is in a blocked shape, and one side of the inner top of the middle tube (1001) is fixedly mounted with an electric control telescopic rod (1002). 6), a semi-circular baffle (1007) is fixedly installed on the output end of the electric-controlled telescopic rod 1 (1006), a plurality of high-position communication holes (1005) are opened on one side of the interior of the middle tube (1001), an electric-controlled telescopic rod 2 (1008) is fixedly installed on the other side of the top of the inner cavity of the middle tube (1001), a semi-circular blocking strip (1009) is fixedly installed on the output end of the electric-controlled telescopic rod 2 (1008), a plurality of low-position communication holes (1011) are opened on the other side of the interior of the middle tube (1001), wing baffles (1004) are fixedly installed on both sides of the middle tube (1001), and a plurality of guide holes (1010) are opened inside the wing baffles (1004); The air flotation mechanism (9) comprises a pressurized air pump (901) and a Y-shaped air pipe (902). The output end of the pressurized air pump (901) is connected to the input end of the Y-shaped air pipe (902). The Y-shaped air pipe (902) is fixedly passed through the ink outlet pipe (8) and the first guide pipe (602) and extends to the inner wall of the middle pipe (1001). The opposite sides of the Y-shaped air pipe (902) are connected to a plurality of branch pipes (903). The output ends of the branch pipes (903) are fixedly installed with microporous metal sintered mesh plugs (904).

2. The multi-stage treatment equipment for printing waste liquid according to claim 1, characterized in that: The mounting seats (109) are evenly distributed on opposite sides of the centrifugal tank (1) and the inner tank (107), the outer sides of the supporting balls (110) are in rolling contact with the bottom of the inner tank (107), the interior of the inner tank (107) is fixedly sleeved with a spiral plate (106), the ball support seats (115) are evenly distributed on the top of the centrifugal tank (1), and the top of the ball support seats (115) is in rolling contact with the bottom of the driven gear ring (102).

3. The multi-stage treatment equipment for printing waste liquid according to claim 1, characterized in that: The input end of the gear speed increaser (5) is transmission-connected to a driven bevel gear (501), the output end of the gear speed increaser (5) is transmission-connected to an output gear (502), the output end of the transmission motor (11) is transmission-connected to an active bevel gear (1101), the outer side of the active bevel gear (1101) and the outer side of the driven bevel gear (501) are meshed and transmission-connected, the outer side of the output gear (502) and the outer side of the driven gear ring (102) are meshed and transmission-connected, and the gear speed increaser (5) is fixedly mounted on the outer side of a support ring (116).

4. The multi-stage treatment equipment for printing waste liquid according to claim 1, characterized in that: The primary coarse filtering mechanism (4) comprises a coarse filter box (401), the top of the coarse filter box (401) is connected to a corrugated inlet pipe (402), an inclined coarse filter screen (404) is obliquely inserted into the interior of the coarse filter box (401), one side of the bottom end of the coarse filter box (401) is connected to an accumulation discharge pipe (403), the accumulation discharge pipe (403) is L-shaped and vertically extends to the outside of the centrifugal tank (1), the bottom of the accumulation discharge pipe (403) is threadedly connected to a sealing cover, a sealing box door is movably installed on the front of the coarse filter box (401), and the bottom of the coarse filter box (401) passes through the movable cover (101) through a pipe and is connected to the bottom of the movable cover (101).

5. The multi-stage treatment equipment for printing waste liquid according to claim 1, characterized in that: The sealing bearing (111) is sleeved on the outer side of the middle tube (1001), the sealing support member (112) is fixedly mounted on the bottom of the inner cavity of the inner tank (107), the inner side of the top end of the sealing support member (112) is fixedly sleeved with a rotating seal member (113), the rotating seal member (113) is movably sleeved on the opposite sides of the middle tube (1001) and the rotating seal member (114), the middle tube (1001) is fixedly penetrated through the centrifugal tank (1) and extends to the bottom of the centrifugal tank (1), the outer side of the bottom end of the middle tube (1001) is fixedly sleeved with an outer bracket (1003), and the outer bracket (1003) is fixedly mounted on the bottom of the inner cavity of the centrifugal tank (1).

6. The multi-stage treatment equipment for printing waste liquid according to claim 1, characterized in that: The high-position communicating holes (1005) are linearly and evenly distributed on one side of the interior of the middle tube (1001); the semi-annular retaining frame (1007) is movably sleeved inside the middle tube (1001) and the opposite side of the partition (1002); the size of the semi-annular retaining frame (1007) is larger than the size of the high-position communicating holes (1005); the semi-annular sealing strip (1009) is movably sleeved on the opposite side of the middle tube (1001) and the partition (1002); the size of the semi-annular sealing strip (1009) is larger than the size of the low-position communicating holes (1005); The hole (1011) is large in size, and a through groove adapted to the Y-shaped gas pipe (902) and the branch pipe (903) is provided inside the semi-annular sealing strip (1009), and the semi-annular sealing strip (1009) is slidably sleeved on the outside of the Y-shaped gas pipe (902) through the through groove. The guide holes (1010) are linearly and evenly distributed inside the wing baffle (1004), and the high-position communicating holes (1005) and the semi-annular baffle (1007) are staggered in height inside the middle pipe (1001).

7. The multi-stage processing equipment for printing waste liquid according to claim 1, characterized in that: The microporous metal sintered mesh plug (904) is sleeved inside the guide hole (1010), and the branch pipes (903) are linearly and evenly distributed on opposite sides of the Y-shaped gas transmission pipe (902). The specifications and dimensions of the branch pipes (903) are compatible with the specifications and dimensions of the guide hole (1010).

8. The multi-stage processing equipment for printing waste liquid according to claim 1, characterized in that: The input end of the booster pump (6) is connected to one end of the guide tube (602), the output end of the booster pump (6) is connected to the connecting tube (601), the end of the connecting tube (601) away from the booster pump (6) is connected to the interior of the oxidation precipitation tank (2), the interior of the oxidation precipitation tank (2) is provided with a constant temperature interlayer (206), the interior of the constant temperature interlayer (206) is installed with an electric heater (207), the outer side of the top of the oxidation precipitation tank (2) is fixedly installed by a bracket There are two hydraulic synchronous telescopic rods (203), the output ends of the two hydraulic synchronous telescopic rods (203) are fixedly installed with sealing covers (201), the bottom of the sealing covers (201) is fixedly installed with a servo motor (205), the output end of the servo motor (205) is connected to the stirring rod (202), the outer side of the bottom end of the stirring rod (202) is fixedly installed with a spiral stirring piece (204), and the inner wall of the oxidation precipitation tank (2) is fixedly sleeved with a spiral plate (208).

9. The multi-stage treatment equipment for printing waste liquid according to claim 8, characterized in that: The input end of the booster pump 2 (7) is connected to the guide pipe 2 (702), and the end of the guide pipe 2 (702) away from the booster pump 2 (7) is connected to the interior of the oxidation precipitation tank (2). The output end of the booster pump 2 (7) is connected to the connecting pipe 2 (701), and the end of the connecting pipe 2 (701) away from the booster pump 2 (7) is connected to the bellows (703). The bottom end of the bellows (703) is connected to the top sealing cover (302), and the top sealing cover (302) is connected to the activated carbon adsorption tank (3) through the method The flange and bolts are sealed and connected, the bottom of the activated carbon adsorption tank (3) is connected to a discharge connection pipe (303), the bottom of the activated carbon adsorption tank (3) is fixedly installed with four supporting legs (301), the bottom of the inner cavity of the activated carbon adsorption tank (3) is placed with a hollow support frame (305), the top of the hollow support frame (305) and the inner side of the activated carbon adsorption tank (3) are movably connected with a stainless steel mesh bag tube (306), and the inner side of the stainless steel mesh bag tube (306) is provided with an activated carbon adsorption filling layer (304).

10. The multi-stage treatment equipment for printing waste liquid according to claim 9, characterized in that: Valves are provided inside the adding hopper (104), ink outlet pipe (8), guide pipe 1 (602), connecting pipe 1 (601), Y-shaped air supply pipe (902), guide pipe 2 (702) and discharge connecting pipe (303), and the top of the sealing cover 2 (201) is connected to two connectors.

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