Atmospheric pressure heating treatment equipment for water-based ink wastewater and treatment process thereof

Abstract

The invention relates to the technical field of ink wastewater treatment processes, and discloses water-based ink wastewater normal-pressure heating treatment equipment and a treatment process thereof.The equipment comprises a base, the side face of the base is triangular, a support is fixedly connected to the middle of the top of the base, the lower end of the support is rotationally connected with a lower-layer roller, and the upper end of the support is rotationally connected with an upper-layer roller; the lower-layer roller and the upper-layer roller are similar in structure, rotating grooves are formed in the two ends of the lower-layer roller, rotating rings are rotationally connected into the rotating grooves, connecting rings are fixedly connected to the outer walls of the rotating rings, and end plates are fixedly connected to the ends of the connecting rings. According to the normal-pressure heating treatment equipment for the water-based ink wastewater and the treatment process thereof, after the equipment is started, the wastewater can continuously enter the lower-layer roller according to a certain flow speed, so that the wastewater is continuously heated, the treatment time interval is reduced, and the treatment capacity in unit time is improved; therefore, the heating treatment efficiency of the wastewater is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ink wastewater treatment technology, in particular to a normal-pressure heating treatment device for water-based ink wastewater and a treatment process thereof. Background Art

[0002] Wastewater treatment, a key component of environmental protection and the sustainable use of water resources, aims to effectively remove pollutants from wastewater through a variety of physical, chemical, and biological methods, ensuring that water quality meets discharge standards or reuse requirements. When treating wastewater containing oil or high-concentration organic matter, such as high-concentration aqueous ink wastewater, a preheating strategy—using a heating furnace to pretreat the wastewater—is often employed to reduce organic matter concentration, ease the treatment burden, and improve overall treatment efficiency. This not only enhances the volatility of harmful components in the wastewater, creating favorable conditions for subsequent gas-phase treatment, but also facilitates flocculation, sedimentation, and solid-liquid separation by improving the uniformity of wastewater composition and reducing liquid viscosity, thereby achieving a dual improvement in treatment efficiency and effectiveness.

[0003] For example, the patent with the patent authorization announcement number CN209065637U discloses a wastewater evaporation combined heating furnace, including an inner water tank and an outer water tank arranged in an outer box body. The inner water tank is connected to the outer water tank through a number of transition pipes. The two water tanks continuously and efficiently circulate and heat the wastewater. The surrounding and containing design of the outer water tank can make full use of the thermal energy of the heating furnace. The heating furnace only needs to heat the waste heat of the inner water tank to complete the heating of the outer water tank, avoiding the dissipation loss of thermal energy, greatly improving the utilization efficiency of thermal energy, and the heating needs of the two units can be met to the maximum extent.

[0004] The above heating furnace still has certain defects: In the current industrial production field, when treating ink wastewater, heating furnaces mostly adopt an intermittent operation mode. Specifically, each time a batch of ink wastewater is put into the heating furnace, it needs to go through a series of heating treatment processes until all indicators of the wastewater meet the standards. Only then will the staff start the feeding process of the next batch of wastewater and then heat it. However, this operation mode has obvious disadvantages. During each heating start and stop, the heating furnace will not only cause energy loss due to heat loss, but the frequent start and stop will also accelerate the aging of the heating elements, thereby reducing the overall operating efficiency of the equipment. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a normal pressure heating treatment equipment for water-based ink wastewater and a treatment process thereof, which can continuously heat the wastewater and improve the operating efficiency of the equipment.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a normal pressure heating treatment device for water-based ink wastewater, comprising a base, the side surface of the base is triangular, a bracket is fixedly connected to the middle position of the top of the base, the lower end of the bracket is rotatably connected to the lower roller, the upper end of the bracket is rotatably connected to the upper roller, the lower roller and the upper roller have similar structures, both ends of the lower roller are provided with a rotating groove, the interior of the rotating groove is rotatably connected to a rotating ring, the outer wall of the rotating ring is fixedly connected to a connecting ring, the end of the connecting ring is fixedly connected to an end plate, and the end plate The gears are connected to the gears of the upper and lower drums by bolts, the gears are connected to the brackets at both ends of the outer walls of the lower and upper drums, a first motor is connected to one side of the bracket, a driving gear is connected to the output end of the first motor, the driving gear is meshed with the gear ring, a feed pipe fixed to the end plate is provided inside the upper drum, the feed pipe is communicated with one end of the lower drum, the other end of the lower drum is connected to a material guide assembly, the other end of the material guide assembly is communicated with the upper drum, and a heating assembly is fixed to the inner wall of the lower drum.

[0007] Furthermore, the heating assembly includes a heating plate and an electric slip ring, the heating plate is fixedly connected to the inner wall of the lower drum, the outer rotation of the lower drum is connected to the electric slip ring, the electric slip ring is fixedly connected to one end of the connecting ring close to the bracket, and the heating plate is electrically connected to the electric slip ring.

[0008] Furthermore, the material guide assembly includes a material guide pipe, a water pump and a material delivery pipe. The end of the lower drum away from the feed pipe is provided with a material guide pipe fixed to the end plate, the material guide pipe is connected to the lower drum, a water pump is fixed to one side of the base, the material guide pipe is fixed to the water inlet end of the water pump, the water outlet end of the water pump is fixed to the material delivery pipe, the other end of the material delivery pipe is connected to the end of the upper drum away from the water pump, the end of the upper drum close to the water pump is provided with a discharge pipe, and the discharge pipe is fixed to the end plate.

[0009] Furthermore, a plurality of symmetrically arranged fixed baffles are provided inside the lower drum, the fixed baffles are fixedly connected to the lower drum, and notches are provided at the upper and lower ends of the fixed baffles.

[0010] Furthermore, a fixed frame is fixedly connected to one end of the lower drum close to the feed pipe, a connecting shaft is fixedly connected to one side of the fixed frame, a rotating shaft is clamped on the end of the connecting shaft away from the fixed frame, a plurality of connecting blocks are fixedly connected to the outer wall of the rotating shaft, a movable baffle is fixedly connected to the other end of the connecting block, notches are provided on both sides of the movable baffle, the fixed baffle and the movable baffle are arranged alternately, a push block is fixedly connected to the end of the rotating shaft away from the fixed frame, and the outer side of the push block is slidably connected to a follower ring rotatably connected to the end plate.

[0011] Furthermore, a movable groove is provided at one end of the rotating shaft close to the connecting shaft, and a toggle block fixed to the connecting shaft is slidably connected inside the movable groove. Slots are provided at the top and bottom of the toggle block, and a group of plug-in blocks matching the slots are fixed to the inner walls at both ends of the movable groove.

[0012] Furthermore, a receiving groove is provided at the end of the rotating shaft away from the connecting shaft, a threaded plate is rotatably connected inside the receiving groove, a threaded rod is threadedly connected at the middle position of the threaded plate, and a frame is rotatably connected to the end of the threaded rod away from the rotating shaft, one side of the frame is fixedly connected to the end plate, and the other side of the frame is fixedly connected to a second motor, and the output end of the second motor is fixedly connected to the threaded rod, and a positioning rod is provided on the circumference of the threaded rod with a sliding connection to the threaded plate, one end of the positioning rod is fixedly connected to the frame, and the other end of the positioning rod is fixedly connected to a fixing plate rotatably connected to the threaded rod.

[0013] A process for treating water-based ink wastewater by heating at normal pressure, comprising the following steps: Step 1: Wastewater enters the lower drum through the feed pipe. The first motor rotates through the driving gear, and then drives the gear ring to rotate through the driving gear, causing the lower drum to rotate. The wastewater flow rate is slowed down by fixed and movable baffles. At the same time, the heating plate heats the wastewater to volatilize the harmful gases dissolved in the wastewater. These gases are then collected and treated by external equipment, such as an active oxygen adsorption device, a UV photolysis device, or a supersaturated lime water tail gas treatment device, until they meet the standards for discharge.

[0014] Step 2: The heated wastewater flows out from the lower drum and enters the feed pipe. Under the action of the water pump, the wastewater enters the upper drum through the feed pipe. This part of the wastewater can not only preheat the untreated wastewater inside the feed pipe, but also reduce its own temperature.

[0015] Step 3: When the baffle density needs to be reduced when treating low-viscosity wastewater, first turn off the first motor and suspend the treatment of the wastewater. Then start the second motor and drive the threaded rod to rotate. Since the threaded plate threadedly connected to the threaded rod is restricted by the positioning rod and cannot rotate, the threaded plate will move away from the second motor, thereby pushing the shaft to move toward the fixed frame until the plug in the movable groove near one end of the fixed frame is disengaged from the slot. Then, turn the shaft to rotate it 90° to align the other set of plugs with the slot. Then, start the second motor again to continue moving the shaft toward the fixed frame, allowing the plug in the movable groove away from one end of the fixed frame to be inserted into the slot. Then, turn off the second motor. At this time, the movable baffle will overlap with the fixed baffle.

[0016] Step 4: The wastewater discharged from the upper drum will enter the external flocculation pool or flocculation tank, and flocculation treatment will be carried out by adding flocculants. Finally, the flocculants will be separated from the wastewater. The separated solid waste will be landfilled or incinerated, and the separated wastewater will be introduced into the anaerobic pool or aerobic pool for decomposition treatment until it meets the standards and is discharged.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This type of water-based ink wastewater normal pressure heating treatment equipment and its treatment process: after the equipment is started, the wastewater can flow into the lower drum at a certain flow rate, realizing continuous heating treatment of the wastewater, reducing the treatment time interval, and increasing the treatment volume per unit time, thereby improving the heating treatment efficiency of the wastewater; 2. This type of water-based ink wastewater normal pressure heating treatment equipment and its treatment process can adjust the position of the movable baffle when treating low-viscosity wastewater so that the movable baffle overlaps with the fixed baffle, thereby reducing the baffle density, shortening the time the wastewater stays in the lower drum, and improving the wastewater treatment efficiency; 3. This type of water-based ink wastewater normal pressure heating treatment equipment and its treatment process, the wastewater after heating treatment will enter the upper drum for cooling, so that the wastewater can return to normal temperature faster, so that the flocculant can play the maximum effect. At the same time of cooling, the heat emitted will be absorbed by the wastewater in the feed pipe, thereby preheating the wastewater in the feed pipe and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a structural schematic diagram of another perspective of the present invention as a whole; Figure 3 It is a partial cross-sectional view of the upper drum of the present invention; Figure 4 It is a partial cross-sectional view of the lower drum of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the local enlarged structure at A in the middle; Figure 6 For the present invention Figure 4 Schematic diagram of the local enlarged structure at B in the middle; Figure 7 This is a schematic diagram of the connection structure between the lower roller and the end plate of the present invention; Figure 8 This is a schematic structural diagram of the fixed baffle and the movable baffle of the present invention; Figure 9 This is a schematic diagram of the connection structure between the rotating shaft and the movable baffle of the present invention; Figure 10This is a schematic diagram of the connection structure between the fixing bracket and the connecting shaft of the present invention; Figure 11 Schematic diagram of the connection structure between the rotating shaft and the second motor of the present invention.

[0019] In the figure: 1. base; 2. bracket; 3. lower roller; 4. upper roller; 5. rotating groove; 6. connecting ring; 7. rotating ring; 8. end plate; 9. gear ring; 10. driving gear; 11. first motor; 12. feed pipe; 13. guide pipe; 14. water pump; 15. conveying pipe; 16. discharge pipe; 17. heating plate; 18. electric slip ring; 19. fixed baffle; 20. movable baffle; 21. fixed frame; 22. connecting shaft; 23. toggle block; 24. slot; 25. connecting block; 26. rotating shaft; 27. movable groove; 28. insert block; 29. storage groove; 30. threaded plate; 31. positioning rod; 32. fixed plate; 33. threaded rod; 34. second motor; 35. frame; 36. push block; 37. follower ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figures 1 to 11 , a water-based ink wastewater normal pressure heating treatment equipment, including a base 1, the side of the base 1 is triangular, the middle position of the top of the base 1 is fixed with a bracket 2, the lower end of the bracket 2 is rotatably connected to the lower roller 3, the upper end of the bracket 2 is rotatably connected to the upper roller 4, the lower roller 3 and the upper roller 4 have similar structures, both ends of the lower roller 3 are provided with a rotating groove 5, the interior of the rotating groove 5 is rotatably connected to a rotating ring 7, the outer wall of the rotating ring 7 is fixed with a connecting ring 6, the end of the connecting ring 6 is fixed with an end plate 8, and the end plate 8 and the connecting ring 6 are connected by bolts Fixed, the connecting ring 6 is fixedly connected to the bracket 2, gear rings 9 are fixedly connected to both ends of the outer walls of the lower drum 3 and the upper drum 4, a first motor 11 is fixedly connected to one side of the bracket 2, and a driving gear 10 is fixedly connected to the output end of the first motor 11, and the driving gear 10 is meshed with the gear ring 9. A feed pipe 12 fixed to the end plate 8 is provided inside the upper drum 4, and the feed pipe 12 is connected to one end of the lower drum 3, and the other end of the lower drum 3 is connected to a material guide assembly, and the other end of the material guide assembly is connected to the upper drum 4, and a heating assembly is fixedly connected to the inner wall of the lower drum 3.

[0022] The water-based ink wastewater normal pressure heating treatment equipment of the present invention starts the first motor 11, the first motor 11 will drive the driving gear 10 to rotate, the driving gear 10 will push the gear ring 9 to rotate, so that the lower drum 3 and the upper drum 4 rotate, and the wastewater enters the higher end of the lower drum 3 through the feed pipe 12. Under the action of gravity, the wastewater will flow to the other end of the lower drum 3. During the flow process, the heating component will heat the wastewater, so that some volatile organic compounds will transfer from the liquid phase to the gas phase, thereby reducing the concentration of organic pollutants in the wastewater. These gases will flow out from the exhaust hole (such as Figure 2 As shown, the exhaust hole is located at one end of the lower drum 3 near the feed pipe 12), and the exhaust gas discharged is recovered or removed through an external tail gas treatment system, such as firstly treating the exhaust gas through activated carbon and UC photolysis device, and then passing the exhaust gas into supersaturated lime water for secondary treatment until the exhaust gas meets the standard and then discharged. The heated wastewater will pass through the guide component into the upper drum 4 for cooling, so as to facilitate the subsequent treatment of the wastewater. The wastewater inside the feed pipe 12 will absorb the heat emitted by the heated wastewater, thereby improving the cooling efficiency. The cooled wastewater will be introduced into the external treatment device, such as first Wastewater is injected into a flocculation tank or a flocculation tank and flocculants are added. Then, the wastewater that produces flocs is separated into solid and liquid, and the solid waste is landfilled or incinerated. The separated wastewater is then injected into an anaerobic tank or an aerobic tank for decomposition treatment and will not be discharged until it meets the standards. This device allows wastewater to continuously enter the lower drum 3 at a certain flow rate, thereby continuously heating the wastewater, reducing the treatment time interval, and increasing the treatment volume per unit time, thereby improving the heating treatment efficiency of the wastewater. In addition, the first motor 11 involved in the present invention is an existing mature product, so it will not be elaborated on here.

[0023] As a preferred technical solution of the present invention, the heating assembly includes a heating plate 17 and an electric slip ring 18. The heating plate 17 is fixedly connected to the inner wall of the lower drum 3. The outer rotation of the lower drum 3 is connected to the electric slip ring 18. The electric slip ring 18 is fixedly connected to one end of the connecting ring 6 close to the bracket 2, and the heating plate 17 is electrically connected to the electric slip ring 18.

[0024] Specifically, the wastewater is heated by the heating plate 17 so that some volatile organic compounds are transferred from the liquid phase to the gas phase, thereby reducing the concentration of organic pollutants in the wastewater and reducing the difficulty of wastewater treatment. In addition, since the heating plate 17 and the electric slip ring 18 are both existing mature products, they will not be elaborated on here.

[0025] As a preferred technical solution of the present invention, the material guide assembly includes a material guide pipe 13, a water pump 14 and a material delivery pipe 15. The end of the lower drum 3 away from the feed pipe 12 is provided with a material guide pipe 13 fixedly connected to the end plate 8, the material guide pipe 13 is connected to the lower drum 3, a water pump 14 is fixedly connected to one side of the base 1, the material guide pipe 13 is fixedly connected to the water inlet end of the water pump 14, the water outlet end of the water pump 14 is fixedly connected to the material delivery pipe 15, the other end of the material delivery pipe 15 is connected to the end of the upper drum 4 away from the water pump 14, and the end of the upper drum 4 close to the water pump 14 is provided with a discharge pipe 16, and the discharge pipe 16 is fixedly connected to the end plate 8.

[0026] Specifically, after the wastewater flows out of the lower drum 3, it will enter the cavity of the water pump 14 through the guide pipe 13, and then be injected into the delivery pipe 15 by the water pump 14. Finally, the wastewater will enter the upper drum 4 to facilitate cooling of the wastewater.

[0027] As a preferred technical solution of the present invention, a plurality of symmetrically arranged fixed baffles 19 are provided inside the lower drum 3 . The fixed baffles 19 are fixedly connected to the lower drum 3 , and notches are provided at the upper and lower ends of the fixed baffles 19 .

[0028] As a preferred technical solution of the present invention, a fixed frame 21 is fixedly connected to one end of the lower drum 3 close to the feed pipe 12, a connecting shaft 22 is fixedly connected to one side of the fixed frame 21, a rotating shaft 26 is clamped on the end of the connecting shaft 22 away from the fixed frame 21, a plurality of connecting blocks 25 are fixedly connected to the outer wall of the rotating shaft 26, a movable baffle 20 is fixedly connected to the other end of the connecting block 25, notches are opened on both sides of the movable baffle 20, the fixed baffle 19 and the movable baffle 20 are arranged alternately, a push block 36 is fixedly connected to the end of the rotating shaft 26 away from the fixed frame 21, and the outer sliding connection of the push block 36 is a follower ring 37 that is rotatably connected to the end plate 8.

[0029] As a preferred technical solution of the present invention, a movable groove 27 is provided at one end of the rotating shaft 26 close to the connecting shaft 22, and a toggle block 23 fixed to the connecting shaft 22 is slidably connected inside the movable groove 27. Slots 24 are provided at the top and bottom of the toggle block 23, and a group of plug-in blocks 28 matching the slots 24 are fixed to the inner walls at both ends of the movable groove 27.

[0030] As a preferred technical solution of the present invention, a receiving groove 29 is provided at the end of the rotating shaft 26 away from the connecting shaft 22, and a threaded plate 30 is rotatably connected inside the receiving groove 29. A threaded rod 33 is threadedly connected to the middle position of the threaded plate 30, and the threaded rod 33 is rotatably connected to the end of the threaded rod 33 away from the rotating shaft 26. One side of the frame 35 is fixed to the end plate 8, and the other side of the frame 35 is fixed to a second motor 34. The output end of the second motor 34 is fixed to the threaded rod 33, and a positioning rod 31 is provided on the circumferential side of the threaded rod 33 with a sliding connection to the threaded plate 30. One end of the positioning rod 31 is fixed to the frame 35, and the other end of the positioning rod 31 is fixed to a fixing plate 32 rotatably connected to the threaded rod 33.

[0031] Specifically, when treating high-viscosity wastewater, such as aqueous ink wastewater, the fixed baffle 19 and the movable baffle 20 together form a high-density baffle system (such as Figure 4 and Figure 8 As shown), the flow rate of high-viscosity wastewater is reduced, its residence time in the lower drum 3 is prolonged, and the heat exchange efficiency is improved; when treating low-viscosity wastewater, such as domestic sewage, due to the good fluidity of low-viscosity wastewater, effective heat exchange can be achieved through the turbulent effect even at a high flow rate, and if the low-viscosity wastewater stays in the lower drum 3 for too long, it will lead to local overheating or uneven heat transfer. Therefore, the second motor 34 can be started first, and the threaded rod 33 can be driven to rotate by the second motor 34. Since the threaded plate 30 threadedly connected to the threaded rod 33 is restricted by the positioning rod 31 and cannot rotate, the threaded plate 30 will move in the direction away from the second motor 34, thereby pushing the rotating shaft 26 to The fixed frame 21 moves in the direction until the plug 28 in the movable groove 27 near one end of the fixed frame 21 is disengaged from the slot 24. Then the rotating shaft 26 is turned to rotate the rotating shaft 26 90 degrees to align the other set of plugs 28 with the slot 24. Then the second motor 34 is started again to make the rotating shaft 26 continue to move toward the fixed frame 21, so that the plug 28 in the movable groove 27 away from the end of the fixed frame 21 is inserted into the slot 24. Then the second motor 34 is turned off. At this time, the movable baffle 20 will overlap with the fixed baffle 19, thereby reducing the density of the baffle system, increasing the flow rate of low-viscosity wastewater, improving the treatment efficiency of low-viscosity wastewater, and achieving a balance between efficiency and energy consumption.

[0032] A process for heating water-based ink wastewater at normal pressure according to the present invention is as follows: Step 1: Wastewater enters the lower drum 3 through the feed pipe 12. The first motor 11 rotates through the driving gear 10, and then drives the gear ring 9 to rotate through the driving gear 10, so that the lower drum 3 rotates. The fixed baffle 19 and the movable baffle 20 slow down the flow rate of the wastewater. At the same time, the heating plate 17 heats the wastewater to volatilize the harmful gases dissolved in the wastewater. These gases are then collected and treated by external equipment, such as an active oxygen adsorption device, a UV photolysis device, or a supersaturated lime water tail gas treatment device, until they meet the standards and are discharged.

[0033] Step 2: The heated wastewater flows out from the lower drum 3 and enters the guide pipe 13. Under the action of the water pump 14, the wastewater enters the upper drum 4 through the feed pipe 15. This part of the wastewater can not only preheat the untreated wastewater in the feed pipe 12, but also reduce its own temperature.

[0034] Step 3: When the density of the baffle needs to be reduced for treating low-viscosity wastewater, the first motor 11 is first turned off to suspend the treatment of the wastewater, and then the second motor 34 is started first to drive the threaded rod 33 to rotate. Since the threaded plate 30 threadedly connected to the threaded rod 33 is restricted by the positioning rod 31 and cannot rotate, the threaded plate 30 will move in the direction away from the second motor 34, thereby pushing the rotating shaft 26 to move toward the fixed frame 21 until the plug 28 in the movable groove 27 near the end of the fixed frame 21 is disengaged from the slot 24, and then the rotating shaft 26 is toggled to rotate the rotating shaft 26 90 degrees, so that the other set of plugs 28 are aligned with the slot 24, and then the second motor 34 is started again to make the rotating shaft 26 continue to move toward the fixed frame 21, allowing the plug 28 in the movable groove 27 away from the end of the fixed frame 21 to be inserted into the slot 24, and then the second motor 34 is turned off. At this time, the movable baffle 20 will overlap with the fixed baffle 19.

[0035] Step 4: The wastewater discharged from the upper drum 4 will enter the external flocculation pool or flocculation tank, and will be flocculated by adding flocculants. Finally, the flocculants will be separated from the wastewater. The separated solid waste will be landfilled or incinerated, and the separated wastewater will be introduced into the anaerobic pool or aerobic pool for decomposition treatment until it meets the standards and is discharged.

[0036] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A water-based ink wastewater normal pressure heating treatment equipment, characterized in that: The invention comprises a base (1), wherein the side surface of the base (1) is triangular, a bracket (2) is fixedly connected to the middle position of the top of the base (1), the lower end of the bracket (2) is rotatably connected to the lower roller (3), the upper end of the bracket (2) is rotatably connected to the upper roller (4), the lower roller (3) and the upper roller (4) have similar structures, both ends of the lower roller (3) are provided with a rotation groove (5), the interior of the rotation groove (5) is rotatably connected to a rotation ring (7), the outer wall of the rotation ring (7) is fixedly connected to a connecting ring (6), the end of the connecting ring (6) is fixedly connected to an end plate (8), the end plate (8) and the connecting ring (6) are fixed by bolts, and the connecting ring (6) is fixedly connected to the bracket (2), and both ends of the outer walls of the lower drum (3) and the upper drum (4) are fixedly connected with a gear ring (9), and one side of the bracket (2) is fixedly connected with a first motor (11), and the output end of the first motor (11) is fixedly connected with a driving gear (10), and the driving gear (10) is meshed with the gear ring (9). The interior of the upper drum (4) is provided with a feed pipe (12) fixedly connected to the end plate (8), and the feed pipe (12) is connected to one end of the lower drum (3), and the other end of the lower drum (3) is connected to a material guide component, and the other end of the material guide component is connected to the upper drum (4), and the inner wall of the lower drum (3) is fixedly connected with a heating component.

2. The normal pressure heating treatment equipment for aqueous ink wastewater according to claim 1, characterized in that: The heating assembly includes a heating plate (17) and an electric slip ring (18), wherein the heating plate (17) is fixedly connected to the inner wall of the lower roller (3), and the outer rotation of the lower roller (3) is connected to the electric slip ring (18), and the electric slip ring (18) is fixedly connected to one end of the connecting ring (6) close to the bracket (2), and the heating plate (17) is electrically connected to the electric slip ring (18).

3. The normal pressure heating treatment equipment for aqueous ink wastewater according to claim 2, characterized in that: The material guide assembly includes a material guide pipe (13), a water pump (14) and a delivery pipe (15). The end of the lower drum (3) away from the feed pipe (12) is provided with a material guide pipe (13) fixedly connected to the end plate (8). The material guide pipe (13) is connected to the lower drum (3). A water pump (14) is fixedly connected to one side of the base (1). The material guide pipe (13) is fixedly connected to the water inlet end of the water pump (14). The water outlet end of the water pump (14) is fixedly connected to the delivery pipe (15). The other end of the delivery pipe (15) is connected to the end of the upper drum (4) away from the water pump (14). The end of the upper drum (4) close to the water pump (14) is provided with a discharge pipe (16). The discharge pipe (16) is fixedly connected to the end plate (8).

4. The normal pressure heating treatment equipment for aqueous ink wastewater according to claim 3, characterized in that: A plurality of symmetrically arranged fixed baffles (19) are provided inside the lower drum (3), the fixed baffles (19) are fixedly connected to the lower drum (3), and notches are provided at the upper and lower ends of the fixed baffles (19).

5. The normal pressure heating treatment equipment for aqueous ink wastewater according to claim 4, characterized in that: A fixed frame (21) is fixedly connected to one end of the lower drum (3) near the feed pipe (12), a connecting shaft (22) is fixedly connected to one side of the fixing frame (21), a rotating shaft (26) is clamped to one end of the connecting shaft (22) away from the fixing frame (21), a plurality of connecting blocks (25) are fixedly connected to the outer wall of the rotating shaft (26), a movable baffle (20) is fixedly connected to the other end of the connecting block (25), notches are provided on both sides of the movable baffle (20), the fixed baffle (19) and the movable baffle (20) are arranged alternately, a push block (36) is fixedly connected to one end of the rotating shaft (26) away from the fixing frame (21), and the outer side of the push block (36) is slidably connected to a follower ring (37) rotatably connected to the end plate (8).

6. The normal pressure heating treatment equipment for aqueous ink wastewater according to claim 5, characterized in that: A movable groove (27) is provided at one end of the rotating shaft (26) close to the connecting shaft (22), and a toggle block (23) fixedly connected to the connecting shaft (22) is slidably connected inside the movable groove (27). A slot (24) is provided at the top and bottom of the toggle block (23), and a group of plug blocks (28) matching the slot (24) are fixedly connected to the inner walls of both ends of the movable groove (27).

7. The normal pressure heating treatment equipment for aqueous ink wastewater according to claim 6, characterized in that: A receiving groove (29) is provided at one end of the rotating shaft (26) away from the connecting shaft (22), a threaded plate (30) is rotatably connected inside the receiving groove (29), a threaded rod (33) is threadedly connected at the middle position of the threaded plate (30), and a frame (35) is rotatably connected at one end of the threaded rod (33) away from the rotating shaft (26), one side of the frame (35) is fixedly connected to the end plate (8), and a second motor (34) is fixedly connected to the other side of the frame (35), an output end of the second motor (34) is fixedly connected to the threaded rod (33), and a positioning rod (31) slidably connected to the threaded plate (30) is provided on the circumference of the threaded rod (33), one end of the positioning rod (31) is fixedly connected to the frame (35), and the other end of the positioning rod (31) is fixedly connected to a fixing plate (32) rotatably connected to the threaded rod (33).

8. A process for heating water-based ink wastewater at normal pressure, comprising the water-based ink wastewater at normal pressure heating treatment equipment according to claim 7, characterized in that: The following steps are involved: Step 1: The wastewater enters the lower drum (3) through the feed pipe (12), and the first motor (11) rotates through the driving gear (10), and then drives the gear ring (9) to rotate through the driving gear (10), so that the lower drum (3) rotates, and the flow rate of the wastewater is slowed down by the fixed baffle (19) and the movable baffle (20). At the same time, the heating plate (17) heats the wastewater to volatilize the harmful gases dissolved in the wastewater. These gases are then collected and treated by external equipment, such as an active oxygen adsorption device, a UV photolysis device or a supersaturated lime water tail gas treatment device, until they meet the standards and are discharged; Step 2: The heated wastewater flows out of the lower drum (3) and enters the guide pipe (13). Under the action of the water pump (14), the wastewater enters the upper drum (4) through the feed pipe (15). This wastewater can not only preheat the untreated wastewater in the feed pipe (12), but also reduce its own temperature. Step 3: When the density of the baffle plate needs to be reduced in order to treat low-viscosity wastewater, the first motor (11) is first turned off to suspend the treatment of the wastewater, and then the second motor (34) is started to drive the threaded rod (33) to rotate. Since the threaded plate (30) threadedly connected to the threaded rod (33) is restricted by the positioning rod (31) and cannot rotate, the threaded plate (30) moves away from the second motor (34), thereby pushing the rotating shaft (26) to move toward the fixed frame (21) until the inside of the movable groove (27) is close to the fixed frame. The insert (28) at one end of the fixed frame (21) is disengaged from the slot (24), and then the rotating shaft (26) is toggled to rotate the rotating shaft (26) 90 degrees, so that the other set of inserts (28) are aligned with the slot (24), and then the second motor (34) is started again to make the rotating shaft (26) continue to move toward the fixed frame (21), so that the insert (28) at the end of the movable groove (27) away from the fixed frame (21) is inserted into the slot (24), and then the second motor (34) is turned off, at which time the movable baffle (20) will overlap with the fixed baffle (19); Step 4: The wastewater discharged from the upper drum (4) will enter the external flocculation pool or flocculation tank, and will be flocculated by adding flocculants. Finally, the flocculants will be separated from the wastewater. The separated solid waste will be landfilled or incinerated, and the separated wastewater will be introduced into the anaerobic pool or aerobic pool for decomposition treatment until it meets the standards and is discharged.

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