Wastewater multistage treatment device for paper production

Abstract

The invention provides a wastewater multi-stage treatment device for paper production, and relates to the technical field of wastewater treatment.The wastewater multi-stage treatment device comprises a tank body, a disinfection mechanism is arranged in the tank body, the outer surface of an inner cylinder is rotationally connected with a rotating ring plate through a bearing, and the upper surface of the rotating ring plate is fixedly connected with a first gear ring; the outer surface of the inner cylinder is rotatably connected with a plurality of supporting rods through bearings, and the outer surfaces of the supporting rods are fixedly connected with first gears. According to the invention, the ultraviolet lamp mounted on the outer surface of the rotating cylinder realizes multi-angle dynamic irradiation; by means of the design, the contact area of ozone and wastewater is remarkably increased, the coverage range and the sterilization path of the ultraviolet lamp are more comprehensive, the two treatment modes of ozone sterilization and ultraviolet irradiation act synergistically, the inactivation and decomposition effects on bacteria, viruses, organic pollutants and the like in the wastewater are effectively enhanced, the overall sterilization treatment efficiency is greatly improved, and the treatment cost is reduced. The wastewater treatment quality is ensured.

Description

Technical Field

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

[0002] In the modern papermaking industry, the paper production process produces a large amount of wastewater with complex components, which contains harmful substances such as lignin, fiber, heavy metal ions, and organic pollutants. At present, the treatment of paper production wastewater mostly adopts a multi-stage treatment process combining physical and chemical methods. In the sterilization and disinfection process, traditional static sterilization devices usually directly add ozone to the wastewater, and then use ultraviolet lamps at fixed positions for irradiation. This method has obvious defects: on the one hand, after ozone enters the wastewater in the form of large bubbles, it tends to quickly aggregate and escape from the water surface, resulting in a small contact area between ozone and wastewater and low mass transfer efficiency. A large amount of ozone is wasted before it is fully reacted, which not only increases the treatment cost, but also makes it difficult to effectively inactivate bacteria in the wastewater and decompose organic pollutants. On the other hand, fixed ultraviolet lamps have a limited irradiation range and there are dead corners for sterilization, which makes it impossible to carry out comprehensive and efficient disinfection of wastewater, making it difficult to meet increasingly stringent environmental protection requirements. In addition, in terms of ozone delivery, traditional processes often adopt a one-time addition method, and the ozone utilization rate is low, which not only causes waste of resources, but may also have an adverse effect on subsequent treatment processes due to ozone residue. In terms of equipment operation stability, fibers, suspended matter, etc. in wastewater are easy to accumulate inside the treatment equipment, especially on the surface of the mesh used to disperse bubbles. The accumulation will hinder the flow of water and bubble movement, reduce treatment efficiency, and even cause equipment blockage, increase equipment maintenance frequency and operating costs. For this reason, we propose a multi-stage treatment device for wastewater used in paper production. Summary of the Invention

[0003] The purpose of the present invention is to solve the above problems and to propose a multi-stage treatment device for wastewater used in paper production.

[0004] To achieve the above-mentioned object, the present invention adopts the following technical solution: A multi-stage treatment device for wastewater from paper production, comprising a tank body, wherein a disinfection mechanism is arranged inside the tank body, wherein the disinfection mechanism comprises an inner cylinder, the outer surface of the inner cylinder is rotatably connected to a rotating ring plate via a bearing, the upper surface of the rotating ring plate is fixedly connected to a first gear ring, the outer surface of the inner cylinder is rotatably connected to a plurality of support rods via a bearing, the outer surfaces of the plurality of support rods are fixedly connected to a first gear, the plurality of first gears are meshed with the first gear ring, one end of the plurality of support rods is fixedly connected to a first rotating plate, and the other ends of the plurality of first rotating plates are rotatably connected to a second rotating plate via a rotating shaft, the inner surface of the inner cylinder is rotatably connected to a plurality of rotating cylinders via bearings, the outer surfaces of the plurality of rotating cylinders are slidably connected to a lifting screen plate, the outer surfaces of the lifting screen plate are rotatably connected to a plurality of fixed rods via bearings, the plurality of fixed rods are fixedly connected to the second rotating plate, the outer surfaces of the plurality of rotating cylinders are fixedly mounted with ultraviolet lamps, and the lower surface of the inner cylinder is mounted with a plurality of nozzles.

[0005] Preferably, a breaking up mechanism is further provided inside the tank body, and the breaking up mechanism includes a plurality of positioning rods, the outer surfaces of the plurality of positioning rods are fixedly connected to the first bevel gear, the outer surfaces of the plurality of fixing rods are fixedly connected to the second bevel gear, the plurality of second bevel gears are meshed with the first bevel gear, the outer surfaces of the plurality of positioning rods are fixedly connected to the first shaking rod, and the plurality of adjacent first shaking rods are rotatably connected to the second shaking rod through bearings, and the lower surfaces of the plurality of first shaking rods and the second shaking rods are fixedly connected to protrusions, and the protrusions are in contact with the lifting mesh plate.

[0006] Preferably, the positioning rod is rotatably connected to the lifting screen via a bearing.

[0007] Preferably, the outer surfaces of the plurality of rotating cylinders are fixedly connected with gear columns, the upper surfaces of the plurality of positioning rods are fixedly connected with rocking frames, and the plurality of adjacent rocking frames are rotatably connected with connecting plates through bearings, and the outer surfaces of the plurality of connecting plates are fixedly connected with incomplete gears, and the incomplete gears are meshed with the gear columns.

[0008] Preferably, a circulation mechanism is provided inside the tank body, and the circulation mechanism includes a stirring rod, the lower surface of the stirring rod is fixedly connected to the third gear, the outer surface of the inner cylinder is rotatably connected to a threaded tube through a bearing, the upper surface of the threaded tube is fixedly connected to a fourth gear, the fourth gear is meshed with the third gear, the outer surface of the threaded tube is threadedly connected to a lifting plate, and the lifting plate is slidably connected to the rotating cylinder, the outer surfaces of the top and bottom of the threaded tube are provided with air inlet holes, and the outer surfaces of the rotating cylinder near the top and bottom are respectively connected with an air inlet pipe and an air outlet pipe.

[0009] Preferably, the inner surface of the tank body is rotatably connected to a rotating rod through a bearing, the outer surface of the rotating rod is fixedly connected to a first connecting rod, the lower surface of the first connecting rod is rotatably connected to a rotating disk, the lower surface of the rotating disk is rotatably connected to a second connecting rod through a rotating shaft, the other end of the second connecting rod is fixedly connected to a stirring rod, and the outer surface of the stirring rod is fixedly connected to a stirring blade.

[0010] Preferably, the outer surface of one of the stirring rods is fixedly connected to the fifth gear, the inner surface of the tank body is rotatably connected to the rotating frame through a bearing, the inner surface of the rotating frame is fixedly connected to the second gear ring, the second gear ring is meshed with the fifth gear, and the rotating frame is fixedly connected to the rotating ring plate.

[0011] Preferably, a mounting rod is fixedly connected to the interior of the tank body, a baffle is fixedly connected to the lower surface of the mounting rod, and the plurality of stirring rods are rotatably connected to the baffle and the inner cylinder.

[0012] Preferably, a motor is installed on the surface of the tank body, and the output end of the motor is fixedly connected to the rotating rod.

[0013] Preferably, the inner surface of the inner cylinder is connected to an exhaust pipe, the outer surface of the baffle is connected to a liquid inlet pipe, the upper surface of the inner cylinder is connected to a delivery pipe, the lower surface of the inner cylinder is connected to a discharge pipe, and the inner cylinder is fixedly connected to the tank body.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are: 1. The present invention proposes a multi-stage treatment device for wastewater used in paper production. The device achieves efficient sterilization through the linkage of a transmission structure. The rotating ring plate drives the first gear ring to rotate, and the support rod is swung through the first gear transmission, which links the first and second rotating plates and pulls the lifting mesh plate to move regularly, breaking ozone bubbles and increasing the gas-liquid contact area. At the same time, the positioning rod drives the rocking frame to rotate the incomplete gear, and cooperates with the gear column to make the rotating drum rotate, so that the ultraviolet lamp installed on the outer surface of the rotating drum can achieve multi-angle dynamic irradiation. Compared with traditional static sterilization devices, this design significantly increases the contact area between ozone and wastewater, and the coverage range and sterilization path of the ultraviolet lamp are more comprehensive. The two treatment methods of ozone sterilization and ultraviolet irradiation work synergistically, effectively enhancing the inactivation and decomposition effect of bacteria, viruses, organic pollutants, etc. in wastewater, greatly improving the overall sterilization treatment efficiency and ensuring the quality of wastewater treatment.

[0015] 2. The present invention proposes a multi-stage treatment device for wastewater from paper production. When the stirring rod rotates, the meshing transmission of the third gear and the fourth gear drives the threaded tube to rotate. When the lifting plate moves upward, the air pressure difference is used to force the ozone gas at the top of the inner tube to enter the rotating tube through the air inlet pipe, and then flow into the interior of the inner tube through the air inlet hole at the top of the threaded tube; when the lifting plate moves downward, the one-way valve on the bottom air outlet pipe opens, while the one-way valve inside the threaded tube closes, and the gas is discharged from the bottom air outlet pipe and re-circulated. This circulating and conveying structure changes the disadvantages of traditional ozone that is easy to escape quickly and has low utilization rate after direct addition. By constructing a closed ozone circulation path, the residence time of ozone in the wastewater is extended, and the ozone and pollutants are fully contacted and reacted. This not only effectively reduces ozone waste and reduces operating costs, but also significantly enhances the oxidation and decomposition ability of various pollutants in the wastewater, greatly improves the wastewater treatment efficiency, and ensures that the effluent water quality is stable and meets the standards.

[0016] 3. The present invention proposes a multi-stage wastewater treatment device for paper production, which drives the positioning rod to rotate through the meshing transmission of the second bevel gear on the outer surface of the fixed rod and the first bevel gear on the outer surface of the positioning rod. When the positioning rod rotates, the first rocking rod and the second rocking rod swing accordingly, and the protrusions on their lower surfaces are in continuous contact with the lifting mesh plate. During the swinging process, the protrusions produce high-frequency vibrations on the lifting mesh plate, effectively preventing bubbles and sediments from accumulating on the surface of the mesh plate. Compared with traditional static treatment equipment, this device can significantly reduce the attachments on the surface of the lifting mesh plate, avoid problems such as mesh plate blockage and poor water flow caused by accumulation, reduce equipment maintenance frequency and cleaning costs, and at the same time, the stable mesh plate operation state ensures that its function of breaking and dispersing ozone bubbles is continuously efficient, further ensuring sufficient contact between ozone and wastewater, maintaining long-term stable operation of the treatment device, and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the external structure of a multi-stage treatment device for wastewater used in paper production proposed by the present invention; Figure 2 This is a schematic diagram of the internal structure of a multi-stage treatment device for paper production wastewater proposed by the present invention; Figure 3 This is a schematic diagram of the internal structure of a multi-stage treatment device for paper production wastewater proposed by the present invention; Figure 4 This is a schematic diagram of the partial structure of the inner cylinder of a multi-stage treatment device for wastewater used in paper production proposed by the present invention; Figure 5 This is a partial cross-sectional top view of a multi-stage treatment device for paper production wastewater proposed by the present invention; Figure 6 This is a partial cross-sectional structural diagram of a rotating drum of a multi-stage treatment device for wastewater used in paper production proposed by the present invention; Figure 7 for Figure 4 Schematic diagram of the locally enlarged structure at point A in the middle.

[0018] Legend: 1. Tank body; 2. Disinfection mechanism; 201. Inner cylinder; 202. Rotating ring plate; 203. First gear ring; 204. Support rod; 205. First gear; 206. First rotating plate; 207. Second rotating plate; 208. Rotating cylinder; 209. Lifting screen; 210. Fixing rod; 211. Ultraviolet lamp; 212. Nozzle; 3. Scattering mechanism; 301. Positioning rod; 302. First bevel gear; 303. Second bevel gear; 304. First shaking rod; 305. Second shaking rod; 306. Bump; 4. Circulation mechanism; 401. Stirring rod ; 402, third gear; 403, threaded tube; 404, fourth gear; 405, lifting plate; 406, air inlet; 407, air inlet pipe; 408, air outlet pipe; 5, gear column; 6, swing frame; 7, connecting plate; 8, incomplete gear; 9, rotating rod; 10, first connecting rod; 11, rotating disk; 12, second connecting rod; 13, stirring blade; 14, fifth gear; 15, rotating frame; 16, second gear ring; 17, mounting rod; 18, baffle; 19, motor; 21, exhaust pipe; 22, liquid inlet pipe; 23, delivery pipe; 24, discharge pipe. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] like Figure 1-Figure 7As shown, a multi-stage treatment device for wastewater used in paper production includes a tank body 1, a disinfection mechanism 2 is arranged inside the tank body 1, and the disinfection mechanism 2 includes an inner cylinder 201, the outer surface of the inner cylinder 201 is rotatably connected to a rotating ring plate 202 through a bearing, the upper surface of the rotating ring plate 202 is fixedly connected to a first gear ring 203, the outer surface of the inner cylinder 201 is rotatably connected to a plurality of support rods 204 through a bearing, the outer surfaces of the plurality of support rods 204 are fixedly connected to a first gear 205, the plurality of first gears 205 are meshed and connected to the first gear ring 203, and one end of the plurality of support rods 204 is fixedly connected to It is connected to a first rotating plate 206, and the other ends of multiple first rotating plates 206 are rotatably connected to a second rotating plate 207 through a rotating shaft. The inner surface of the inner cylinder 201 is rotatably connected to multiple rotating cylinders 208 through bearings. The outer surfaces of the multiple rotating cylinders 208 are slidably connected to a lifting mesh plate 209. The outer surface of the lifting mesh plate 209 is rotatably connected to multiple fixed rods 210 through bearings. The multiple fixed rods 210 are fixedly connected to the second rotating plate 207. The outer surfaces of the multiple rotating cylinders 208 are fixedly installed with ultraviolet lamps 211, and the lower surface of the inner cylinder 201 is installed with multiple nozzles 212.

[0022] The effect is that ozone is sprayed into the inner cylinder 201 through multiple nozzles 212 on the lower surface of the inner cylinder 201 and contacts the wastewater. When the rotating ring plate 202 rotates, the first gear ring 203 on its surface engages with multiple first gears 205, driving the support rod 204 to rotate, and the first rotating plate 206 and the second rotating plate 207 move accordingly, and the lifting mesh plate 209 is driven to reciprocate up and down through the fixed rod 210. The lifting mesh plate 209 is slidably connected to the rotating cylinder 208. Since the support rod 204 rotates back and forth, the lifting mesh plate 209 will not move to the bottom of the support rod 204 at this time. The reciprocating movement of the lifting mesh plate 209 can effectively disperse the gathered ozone bubbles, break them into smaller bubbles, and increase the contact area between ozone and wastewater.

[0023] like Figure 1-Figure 7As shown, the interior of the tank body 1 is further provided with a breaking mechanism 3, which includes a plurality of positioning rods 301, the outer surfaces of the plurality of positioning rods 301 are fixedly connected to the first bevel gear 302, the outer surfaces of the plurality of fixing rods 210 are fixedly connected to the second bevel gear 303, the plurality of second bevel gears 303 are meshed with the first bevel gear 302, the outer surfaces of the plurality of positioning rods 301 are fixedly connected to the first shaking rod 304, and the plurality of adjacent first shaking rods 304 are rotatably connected to the second shaking rod 305 through bearings, and the plurality of second The lower surfaces of the first rocking rod 304 and the second rocking rod 305 are fixedly connected to the protrusion 306, the protrusion 306 is in contact with the lifting mesh plate 209, the positioning rod 301 is rotatably connected to the lifting mesh plate 209 through a bearing, the outer surfaces of the multiple rotating cylinders 208 are fixedly connected to the gear column 5, the upper surfaces of the multiple positioning rods 301 are fixedly connected to the rocking frame 6, and the multiple adjacent rocking frames 6 are rotatably connected to the connecting plates 7 through bearings, the outer surfaces of the multiple connecting plates 7 are fixedly connected to the incomplete gears 8, and the incomplete gears 8 are meshed with the gear column 5.

[0024] The effect is that the second bevel gear 303 on the outer surface of the fixed rod 210 is engaged with the first bevel gear 302 on the outer surface of the positioning rod 301, driving the positioning rod 301 to rotate, and the rocking frame 6 and the connecting plate 7 on the positioning rod 301 drive the incomplete gear 8 to rotate, and the incomplete gear 8 is engaged with the tooth column 5 on the outer surface of the rotating cylinder 208, so that the lifting screen 209 rotates during the lifting process of the rotating cylinder 208, so that the ultraviolet lamp 211 on the outer surface of the rotating cylinder 208 moves accordingly, realizing multi-angle and multi-position irradiation of the ultraviolet lamp 211, and sterilizing the wastewater with ozone. When the positioning rod 301 rotates, the first rocking rod 304 and the second rocking rod 305 swing accordingly, and the protrusions 306 on their lower surfaces contact the lifting screen 209. During the swing, the lifting screen 209 can be vibrated to prevent bubbles and precipitation accumulation on its surface.

[0025] like Figure 1-Figure 7As shown, a circulation mechanism 4 is provided inside the tank body 1, and the circulation mechanism 4 includes a stirring rod 401, and the lower surface of the stirring rod 401 is fixedly connected to the third gear 402, the outer surface of the inner cylinder 201 is rotatably connected to the threaded tube 403 through a bearing, the upper surface of the threaded tube 403 is fixedly connected to the fourth gear 404, the fourth gear 404 is meshed with the third gear 402, the outer surface of the threaded tube 403 is threadedly connected to the lifting plate 405, and the lifting plate 405 is slidably connected to the rotating cylinder 208, and the outer surfaces of the top and bottom of the threaded tube 403 are provided with air inlet holes 406, and the outer surfaces of the rotating cylinder 208 near the top and bottom are respectively connected with the air inlet pipe 407 and the air outlet pipe 408, the inner surface of the tank body 1 is rotatably connected to the rotating rod 9 through a bearing, the outer surface of the rotating rod 9 is fixedly connected to the first connecting rod 10, the lower surface of the first connecting rod 10 is rotatably connected to the rotating disk 11, the lower surface of the rotating disk 11 is rotatably connected to the second connecting rod 12 through a rotating shaft, and the other end of the second connecting rod 12 is connected to the rotating disk 11. The stirring rod 401 is fixedly connected, and the outer surface of the stirring rod 401 is fixedly connected to the stirring blade 13, and the outer surface of one of the stirring rods 401 is fixedly connected to the fifth gear 14. The inner surface of the tank body 1 is rotatably connected to the rotating frame 15 through the bearing, and the inner surface of the rotating frame 15 is fixedly connected to the second gear ring 16, which is meshed with the fifth gear 14. The rotating frame 15 is fixedly connected to the rotating ring plate 202, and the interior of the tank body 1 is fixedly connected to the mounting rod 17. The lower surface of the mounting rod 17 A baffle 18 is fixedly connected, and multiple stirring rods 401 are rotatably connected to the baffle 18 and the inner cylinder 201. A motor 19 is installed on the surface of the tank body 1, and the output end of the motor 19 is fixedly connected to the rotating rod 9. The inner surface of the inner cylinder 201 is connected to an exhaust pipe 21, the outer surface of the baffle 18 is connected to a liquid inlet pipe 22, the upper surface of the inner cylinder 201 is connected to a delivery pipe 23, and the lower surface of the inner cylinder 201 is connected to a discharge pipe 24. The inner cylinder 201 is fixedly connected to the tank body 1.

[0026] The effect is that the motor 19 is started, the motor 19 drives the rotating rod 9 to move back and forth, drives the rotating rod 9 to rotate back and forth, the rotating rod 9 drives the rotating disk 11 to rotate through the first connecting rod 10, the rotating disk 11 drives the second connecting rod 12 to move, and drives the stirring rod 401 to rotate back and forth, the stirring blade 13 on the stirring rod 401 stirs the wastewater, and at the same time, the acid-base regulator is added to the tank body 1, and the fifth gear 14 on the outer surface of one of the stirring rods 401 is engaged with the second gear ring 16, thereby driving the rotating frame 15 and the rotating ring plate 202 to rotate, so that the wastewater is fully mixed during the stirring process. When the stirring rod 401 rotates, the threaded tube 403 is driven to rotate through the engagement of the fourth gear 404 and the third gear 402, and the inner tube 201 is A limiting rod is provided at the top, and the lifting plate 405 is slidably connected to the limiting rod for limiting. At this time, the lifting plate 405 can be driven to rise and fall. When the lifting plate 405 moves upward, the gas at the top of the inner cylinder 201 can be driven to enter the rotating cylinder 208 from the air inlet pipe 407, and enter the interior of the threaded tube 403 from the air inlet hole 406 at the top. The interior of the threaded tube 403, the air inlet pipe 407 and the air outlet pipe 408 are all provided with a one-way valve, and re-enter the rotating cylinder 208 below the lifting plate 405. When the lifting plate 405 moves downward, the one-way valve on the bottom air outlet pipe 408 opens, and the one-way valve inside the threaded tube 403 closes. At this time, the gas is discharged from the bottom air outlet pipe 408, realizing the circulation and transportation of ozone and increasing the contact area of ​​ozone.

[0027] Working principle: the upper half of the interior of the tank body 1 is the stirring and regulating area. Start the motor 19, and its output end drives the rotating rod 9 to reciprocate. The rotating rod 9 drives the rotating disk 11 to rotate through the first connecting rod 10. The rotating disk 11 drives the second connecting rod 12 to move and drives the stirring rod 401 to rotate back and forth. The stirring blade 13 on the stirring rod 401 stirs the wastewater. At the same time, the acid-base regulator is added to the tank body 1. The fifth gear 14 on the outer surface of one of the stirring rods 401 is engaged with the second gear ring 16, thereby driving the rotating frame 15 and the rotating ring plate 202 to rotate, so that the wastewater is fully mixed during the stirring process, completing the pH value adjustment, and adjusting the pH. The wastewater after the value is calculated flows into the inner cylinder 201 through the liquid inlet pipe 22 connected to the outer surface of the baffle 18, and is ready for sterilization. Ozone is sprayed into the inner cylinder 201 through multiple nozzles 212 on the lower surface of the inner cylinder 201 and contacts the wastewater. When the rotating ring plate 202 rotates, the first gear ring 203 on its surface engages with multiple first gears 205, driving the support rod 204 to rotate, and the first rotating plate 206 and the second rotating plate 207 move accordingly, and the lifting screen plate 209 is driven to reciprocate up and down through the fixed rod 210. The lifting screen plate 209 is slidably connected to the rotating cylinder 208. Due to the support rod 204 reciprocates, at this time the lifting screen plate 209 will not move to the bottom of the support rod 204, the lifting screen plate 209 reciprocating up and down can effectively disperse the gathered ozone bubbles, break them into smaller bubbles, and increase the contact area between ozone and wastewater. At the same time, the second bevel gear 303 on the outer surface of the fixed rod 210 is engaged with the first bevel gear 302 on the outer surface of the positioning rod 301, driving the positioning rod 301 to rotate, and the rocking frame 6 and the connecting plate 7 on the positioning rod 301 drive the incomplete gear 8 to rotate, and the incomplete gear 8 is engaged with the tooth column 5 on the outer surface of the rotating cylinder 208, so that the lifting screen plate 209 can effectively disperse the gathered ozone bubbles, break them into smaller bubbles, and increase the contact area between ozone and wastewater. At the same time, the second bevel gear 303 on the outer surface of the fixed rod 210 is engaged with the first bevel gear 302 on the outer surface of the positioning rod 301, driving the positioning rod 301 to rotate. The rocking frame 6 and the connecting plate 7 on the positioning rod 301 drive the incomplete gear 8 to rotate, and the incomplete gear 8 is engaged with the tooth column 5 on the outer surface of the rotating cylinder 208, so that the lifting screen plate 209 can effectively disperse the gathered ozone bubbles, break them into smaller bubbles, and increase the contact area between ozone and wastewater. During the lifting process of the screen plate 209, the rotating cylinder 208 rotates, causing the ultraviolet lamp 211 on the outer surface of the rotating cylinder 208 to move accordingly, so that the ultraviolet lamp 211 can irradiate at multiple angles and positions, and sterilize the wastewater with ozone. At the same time, when the stirring rod 401 rotates, the threaded tube 403 is driven to rotate through the engagement of the fourth gear 404 and the third gear 402. A limit rod is provided inside the inner cylinder 201, and the lifting plate 405 is slidably connected to the limit rod for limiting. At this time, the lifting plate 405 can be driven to rise and fall. When the lifting plate 405 moves upward, it can drive The gas at the top of the inner cylinder 201 enters the rotating cylinder 208 from the air inlet pipe 407, and enters the interior of the threaded tube 403 from the air inlet hole 406 at the top. The threaded tube 403, the air inlet pipe 407 and the air outlet pipe 408 are all provided with a one-way valve, and then re-enters the rotating cylinder 208 below the lifting plate 405. When the lifting plate 405 moves downward, the one-way valve on the air outlet pipe 408 at the bottom opens, and the one-way valve inside the threaded tube 403 closes. At this time, the gas is discharged from the air outlet pipe 408 at the bottom, realizing the circulation of ozone and increasing the contact area of ​​ozone. When the positioning rod 301 rotates,The first and second rocking rods 304 and 305 swing accordingly, and the protrusions 306 on their lower surfaces come into contact with the lifting mesh plate 209. The swinging action vibrates the lifting mesh plate 209, preventing bubbles and sediment from accumulating on its surface. The sterilized wastewater is then discharged from the tank body 1 through the drainage pipe 24 connected to the lower surface of the inner cylinder 201, while the gas is discharged from the delivery pipe 23 and enters the subsequent processing link.

[0028] The above description is merely a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any person skilled in the art may utilize the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification, equivalent change, and modification of the above embodiments made in accordance with the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A multi-stage treatment device for wastewater from paper production, comprising a tank (1), characterized in that: A disinfection mechanism (2) is provided inside the tank body (1), and the disinfection mechanism (2) comprises an inner cylinder (201), the outer surface of the inner cylinder (201) is rotatably connected to a rotating ring plate (202) via a bearing, the upper surface of the rotating ring plate (202) is fixedly connected to a first gear ring (203), the outer surface of the inner cylinder (201) is rotatably connected to a plurality of support rods (204) via a bearing, the outer surfaces of the plurality of support rods (204) are all fixedly connected to a first gear (205), the plurality of first gears (205) are meshedly connected to the first gear ring (203), and one end of the plurality of support rods (204) is fixedly connected to a first rotating plate (206). ), the other ends of the plurality of first rotating plates (206) are rotatably connected to the second rotating plate (207) via a rotating shaft, the inner surface of the inner cylinder (201) is rotatably connected to the plurality of rotating cylinders (208) via a bearing, the outer surfaces of the plurality of rotating cylinders (208) are slidably connected to the lifting mesh plates (209), the outer surfaces of the lifting mesh plates (209) are rotatably connected to the plurality of fixing rods (210) via a bearing, the plurality of fixing rods (210) are fixedly connected to the second rotating plate (207), the outer surfaces of the plurality of rotating cylinders (208) are fixedly mounted with ultraviolet lamps (211), and the lower surface of the inner cylinder (201) is mounted with a plurality of nozzles (212).

2. The multi-stage treatment device for paper production wastewater according to claim 1, characterized in that: The tank body (1) is further provided with a dispersing mechanism (3), comprising a plurality of positioning rods (301), the outer surfaces of the plurality of positioning rods (301) being fixedly connected to a first bevel gear (302), the outer surfaces of the plurality of fixing rods (210) being fixedly connected to a second bevel gear (303), the plurality of second bevel gears (303) being meshedly connected to the first bevel gear (302), the outer surfaces of the plurality of positioning rods (301) being fixedly connected to a first rocking rod (304), a plurality of adjacent first rocking rods (304) being rotatably connected to a second rocking rod (305) via a bearing, the lower surfaces of the plurality of first rocking rods (304) and the second rocking rods (305) being fixedly connected to a protrusion (306), the protrusion (306) being in contact with the lifting mesh plate (209).

3. The multi-stage treatment device for paper production wastewater according to claim 2, characterized in that: The positioning rod (301) is rotatably connected to the lifting screen (209) via a bearing.

4. The multi-stage treatment device for paper production wastewater according to claim 3, characterized in that: The outer surfaces of the plurality of rotating cylinders (208) are fixedly connected to tooth columns (5), the upper surfaces of the plurality of positioning rods (301) are fixedly connected to rocking frames (6), and the plurality of adjacent rocking frames (6) are rotatably connected to connecting plates (7) via bearings, and the outer surfaces of the plurality of connecting plates (7) are fixedly connected to incomplete gears (8), and the incomplete gears (8) are meshedly connected to the tooth columns (5).

5. The multi-stage treatment device for paper production wastewater according to claim 1, characterized in that: A circulation mechanism (4) is provided inside the tank body (1), and the circulation mechanism (4) includes a stirring rod (401), the lower surface of the stirring rod (401) is fixedly connected to a third gear (402), the outer surface of the inner cylinder (201) is rotatably connected to a threaded tube (403) via a bearing, the upper surface of the threaded tube (403) is fixedly connected to a fourth gear (404), the fourth gear (404) is meshedly connected to the third gear (402), the outer surface of the threaded tube (403) is threadedly connected to a lifting plate (405), the lifting plate (405) is slidably connected to the rotating cylinder (208), the outer surfaces of the top and bottom of the threaded tube (403) are both provided with air inlet holes (406), and the outer surfaces of the rotating cylinder (208) near the top and bottom are respectively connected with an air inlet pipe (407) and an air outlet pipe (408).

6. The multi-stage treatment device for paper production wastewater according to claim 5, characterized in that: The inner surface of the tank body (1) is rotatably connected to a rotating rod (9) via a bearing, the outer surface of the rotating rod (9) is fixedly connected to a first connecting rod (10), the lower surface of the first connecting rod (10) is rotatably connected to a rotating disk (11), the lower surface of the rotating disk (11) is rotatably connected to a second connecting rod (12) via a rotating shaft, the other end of the second connecting rod (12) is fixedly connected to a stirring rod (401), and the outer surface of the stirring rod (401) is fixedly connected to a stirring blade (13).

7. The multi-stage treatment device for paper production wastewater according to claim 6, characterized in that: The outer surface of one of the stirring rods (401) is fixedly connected to a fifth gear (14), the inner surface of the tank body (1) is rotatably connected to a rotating frame (15) via a bearing, the inner surface of the rotating frame (15) is fixedly connected to a second gear ring (16), the second gear ring (16) is meshedly connected to the fifth gear (14), and the rotating frame (15) is fixedly connected to the rotating ring plate (202).

8. The multi-stage treatment device for paper production wastewater according to claim 7, characterized in that: The interior of the tank body (1) is fixedly connected to a mounting rod (17), the lower surface of the mounting rod (17) is fixedly connected to a baffle (18), and the plurality of stirring rods (401) are rotatably connected to the baffle (18) and the inner cylinder (201).

9. The multi-stage treatment device for paper production wastewater according to claim 1, characterized in that: A motor (19) is mounted on the surface of the tank body (1), and an output end of the motor (19) is fixedly connected to the rotating rod (9).

10. The multi-stage treatment device for paper production wastewater according to claim 8, characterized in that: The inner surface of the inner cylinder (201) is connected to an exhaust pipe (21), the outer surface of the baffle (18) is connected to a liquid inlet pipe (22), the upper surface of the inner cylinder (201) is connected to a delivery pipe (23), and the lower surface of the inner cylinder (201) is connected to a liquid discharge pipe (24). The inner cylinder (201) is fixedly connected to the tank body (1).

Images