Papermaking wastewater precipitation and recovery device for papermaking

Abstract

The invention relates to the technical field of papermaking wastewater treatment, and provides a papermaking wastewater precipitation and recovery device for papermaking, which comprises a precipitation tank, a hexagonal precipitation partition plate, a water distribution assembly with a buffer function, a discharge assembly with a precipitation function, an upper layer liquid taking assembly with a position adjusting function and a liquid conveying mechanism, a box cover is detachably arranged on the settling box in a sealed mode, the hexagonal settling partition plates are arranged in the settling box in a sealed mode, the hexagonal settling partition plates divide the interior of the settling box into a first settling area, a second settling area, a third settling area, a fourth settling area, a flocculation area and a fifth settling area in sequence, and the number of the water distribution assemblies is five. Through the technical scheme, the problems of unreasonable water distribution and easy influence on normal precipitation of the wastewater when the papermaking wastewater is precipitated by the papermaking wastewater precipitation recovery device for papermaking in the prior art are solved.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking wastewater treatment, and in particular to a papermaking wastewater sedimentation recovery device for papermaking. Background Art

[0002] The papermaking wastewater sedimentation recovery device for papermaking uses the principle of physical sedimentation to make the suspended solid particles in the papermaking wastewater settle to the bottom of the device under the action of gravity, thereby realizing solid-liquid separation and achieving the purpose of recovering wastewater and precipitated materials. Common papermaking wastewater sedimentation recovery devices include sedimentation tanks, sedimentation boxes and other equipment. The equipment is generally composed of water inlet, sedimentation area, water outlet weir, mud discharge system and other parts.

[0003] As is known to all, papermaking wastewater contains a lot of impurities such as fibers and fillers. If a filter is set on one side of the water inlet of the papermaking wastewater sedimentation and recovery device in the prior art, the mesh of the filter is too small, which is easy to cause clogging of the filter, and the mesh of the filter is too large and it is difficult to achieve the filtering effect. Therefore, in the prior art, the common way to precipitate papermaking wastewater is to directly introduce the wastewater into the sedimentation and recovery device. However, the water inlet in the existing sedimentation and recovery device is mostly unable to reasonably distribute the wastewater. After the wastewater enters the sedimentation tank, it is difficult to evenly distribute the wastewater. In addition, for equipment such as the horizontal flow sedimentation tank, the water inlet is set on one side of the equipment. When the wastewater is introduced, the water flow speed in the area close to the water inlet will be fast, resulting in insufficient wastewater sedimentation time, while the water flow on the other side is slow, which is easy to form a dead zone, affecting the overall sedimentation effect. Summary of the invention

[0004] The present invention provides a papermaking wastewater sedimentation and recovery device for papermaking, which is used to solve the problem raised in the background technology that the papermaking wastewater sedimentation and recovery device for papermaking in the prior art has unreasonable water distribution when precipitating papermaking wastewater, which easily affects the normal sedimentation of wastewater.

[0005] The technical scheme of the present invention is as follows: A papermaking wastewater sedimentation and recovery device for papermaking, comprising a sedimentation box, a hexagonal sedimentation partition, a water distribution component with a buffering function, a discharge component with a sedimentation function, an upper layer liquid taking component with a position adjustment function, and a liquid infusion mechanism; A support frame is provided at the bottom of the sedimentation box, and a box cover is provided on the sedimentation box in a sealed and detachable manner; The hexagonal sedimentation partition is sealed and arranged in the sedimentation box, and the hexagonal sedimentation partition divides the sedimentation box into a sedimentation zone 1, a sedimentation zone 2, a sedimentation zone 3, a sedimentation zone 4, a flocculation zone and a sedimentation zone 5 in sequence; There are five water distribution components, and the five water distribution components are respectively arranged in the first sedimentation area, the second sedimentation area, the third sedimentation area, the fourth sedimentation area and the fifth sedimentation area; There are six discharge assemblies, which are arranged at the bottom of the sedimentation tank, and the six discharge assemblies are respectively connected to the bottom of the sedimentation zone 1, the sedimentation zone 2, the sedimentation zone 3, the sedimentation zone 4, the flocculation zone and the sedimentation zone 5; There are six upper layer liquid taking components, and the six upper layer liquid taking components are respectively arranged in the first sedimentation zone, the second sedimentation zone, the third sedimentation zone, the fourth sedimentation zone, the flocculation zone and the fifth sedimentation zone; The infusion mechanism is arranged on one side of the sedimentation box, and the infusion mechanism is connected and arranged between the box cover and the upper liquid collection component, and is used to introduce the upper wastewater in the sedimentation area 1 into the sedimentation area 2, the sedimentation area 3, the sedimentation area 4, the flocculation area and the sedimentation area 5 in sequence.

[0006] As a preferred technical solution of the present application, the water distribution assembly includes a water distribution bucket, a water distribution sleeve and a water distribution position adjustment pipe; The water distribution bucket is arranged in the first sedimentation area, the second sedimentation area, the third sedimentation area, the fourth sedimentation area and the fifth sedimentation area, and a plurality of water seepage and air return holes are provided between the edge of the water distribution bucket and the sedimentation box and the hexagonal sedimentation partition; The water distribution sleeve is connected and arranged at the bottom of the water distribution bucket; The water distribution and level-adjusting pipe penetrates through and is sealed and slidably arranged in the water distribution sleeve, and the water distribution and level-adjusting pipe is connected to the adjacent upper-layer liquid extraction assembly.

[0007] On the basis of the above scheme, the discharge assembly includes a conical recovery box and a recovery pipe; The conical recovery tank is arranged in communication with the bottom of the sedimentation tank; The recovery pipe is connected to the bottom of the conical recovery box, and a recovery valve is installed on the recovery pipe.

[0008] As a preferred technical solution of the present application, the upper layer liquid collection assembly includes a liquid collection cylinder, a liquid collection tube, a liquid collection cylinder and a liquid collection rod; The liquid taking cylinder is arranged on the box cover through the box cover; The liquid collection tube penetrates and is sealed and slidably arranged in the liquid collection cylinder; The liquid taking cylinder is installed on the box cover, and the output ends of the liquid taking cylinders located in the first sedimentation area, the second sedimentation area, the third sedimentation area, the fourth sedimentation area, and the fifth sedimentation area penetrate into the water distribution level adjustment pipe and are connected to the water distribution level adjustment pipe; The liquid taking rod located in the sedimentation zone 1, the sedimentation zone 2, the sedimentation zone 3, the sedimentation zone 4 and the sedimentation zone 5 is arranged between the water distribution and level adjustment pipe and the liquid taking pipe, and the liquid taking rod located in the flocculation zone is arranged between the output end of the liquid taking cylinder and the liquid taking pipe.

[0009] Based on the above solution, the infusion mechanism includes an infusion pump; There are six infusion pumps, which are arranged on one side of the sedimentation tank. The infusion pumps correspond to the upper liquid collection components one by one, and the input end of the infusion pump is connected with one end of the liquid collection cylinder. The output end of the infusion pump connected with the sedimentation zone 1, the sedimentation zone 2, the sedimentation zone 3, the sedimentation zone 4 and the flocculation zone are respectively connected with the sedimentation zone 2, the sedimentation zone 3, the sedimentation zone 4, the flocculation zone and the sedimentation zone 5, and the output end of another infusion pump connected with the sedimentation zone 5 is connected with a clear liquid discharge pipe.

[0010] Further on the basis of the above scheme, the input end of the infusion pump whose output end is connected to the flocculation zone is connected to a flocculant addition tube, and a packing valve is installed on the flocculant addition tube.

[0011] Further on the basis of the above scheme, a mixing component is installed on the box cover, and the mixing component penetrates into the flocculation area to stir the wastewater in the flocculation area.

[0012] Further on the basis of the above scheme, the mixing component includes a mixing rotating rod, a spiral mixing blade and a mixing motor; The mixing rotating rod penetrates and is rotatably arranged on the box cover; The spiral mixing blade is arranged on the mixing rotating rod, and the spiral mixing blade is located in the flocculation area; The mixing motor is installed on the box cover, and the output end of the mixing motor is connected to one end of the mixing rotating rod.

[0013] On the basis of the above scheme, six connecting rod float liquid level gauges are further arranged on the box cover, and the detection ends of the six connecting rod float liquid level gauges respectively penetrate into the first sedimentation area, the second sedimentation area, the third sedimentation area, the fourth sedimentation area, the flocculation area and the fifth sedimentation area; On the basis of the above scheme, six return air pipes are connected to the box cover, and the six return air pipes are respectively connected to the sedimentation zone 1, the sedimentation zone 2, the sedimentation zone 3, the sedimentation zone 4, the flocculation zone and the sedimentation zone 5.

[0014] On the basis of the above scheme, the box cover is connected with a water inlet pipe, and the water inlet pipe is connected with the first sedimentation area for injecting papermaking wastewater.

[0015] The working principle and beneficial effects of the present invention are: 1. In the present invention, when the papermaking wastewater is precipitated and recovered, the wastewater is discharged into the first sedimentation area through the water inlet pipe. After the wastewater enters the first sedimentation area, the wastewater is gathered at the water distribution sleeve through the water distribution bucket. Under the action of the water distribution bucket, the injected wastewater is buffered, so that the wastewater flows into the sedimentation box and the conical recovery box through the water distribution sleeve and the water distribution level adjustment pipe. As the wastewater level in the sedimentation box rises, the depth of the wastewater is detected by the connecting rod float liquid level gauge, the liquid taking cylinder is started, and the output end of the liquid taking cylinder in the first sedimentation area drives the water distribution level adjustment pipe to move, so that the bottom end of the water distribution level adjustment pipe extends to the range of 5-10cm below the wastewater liquid level, thereby reducing the excessive impact of the wastewater in the conical recovery box caused by the splashing of the wastewater, and giving the conical recovery box a sense of space. The wastewater in the recovery box has a better sedimentation environment. As the wastewater level in the sedimentation zone 1 continues to rise, the gas in the sedimentation zone 1 will be discharged to the air through the seepage return hole and the return pipe to ensure the normal discharge of the water level. It should be added that when the flow rate of the wastewater injected into the sedimentation zone 1 through the water inlet pipe is unstable, an air regulating valve can be installed on the return pipe. By adjusting the discharge rate of the gas in the sedimentation zone 1, the wastewater can be temporarily gathered above the water distribution bucket, thereby controlling the flow rate of the wastewater when the through-hole water distribution level regulating pipe is used. Even if a small amount of wastewater flows out through the seepage return hole, this part of the wastewater will flow along the edge of the hexagonal sedimentation plate and the sedimentation box, and will not splash a large amount of water, thereby not affecting the normal sedimentation of the wastewater in the sedimentation zone 1. 2. In the present invention, after the wastewater injected into the first sedimentation zone has been precipitated for a period of time, the infusion pump located at one side of the first sedimentation zone is started, and the upper layer solution of the wastewater in the first sedimentation zone is pumped into the second sedimentation zone through the infusion pump, and the liquid collection cylinder is started as the water level in the first sedimentation zone drops. It is additionally explained that in order not to affect the continuous precipitation of the wastewater in the sedimentation tank, the water distribution adjustment sleeve is arranged on the side away from the liquid collection pipe as much as possible, so that the wastewater can be continuously injected into the first sedimentation zone through the water inlet pipe, and when the infusion pump is started, the wastewater can be pumped into the second sedimentation zone, the third sedimentation zone, the fourth sedimentation zone, the flocculation zone and the fifth sedimentation zone in turn, so that the wastewater is precipitated step by step in the second sedimentation zone, the third sedimentation zone and the fourth sedimentation zone; 3. The present invention, after the precipitation from the first precipitation zone to the fourth precipitation zone, injects the waste liquid in the fourth precipitation zone into the flocculation zone through the infusion pump, connects the flocculant adding tube to the device carrying the flocculant in the prior art, opens the filling valve, mixes the flocculant in the flocculant device with the wastewater through the flocculant adding tube, and pumps the flocculant and the wastewater into the flocculation zone after the initial mixing in the infusion pump. At this time, the mixing motor is started, and the output end of the mixing motor drives the mixing rotating rod to rotate, and the rotation of the mixing rotating rod drives the spiral mixing blade to rotate. The flocculant and the wastewater in the flocculation zone are stirred by the rotation of the spiral mixing blade, so that the wastewater and the flocculant are fully mixed. Under the action of the flocculant, the unprecipitated impurities suspended in the wastewater are flocculated, and then the flocculated solution is pumped to the fifth precipitation zone through the infusion pump for final precipitation, and then the upper clear liquid in the fifth precipitation zone can be discharged through the clear liquid discharge pipe by opening the infusion pump on one side of the fifth precipitation zone.

[0016] 4. In the present invention, after the solutions in the first precipitation zone, the second precipitation zone, the third precipitation zone, the fourth precipitation zone, the flocculation zone and the fifth precipitation zone are precipitated, the impurities precipitated in the conical recovery box can be discharged through the recovery pipe by opening the corresponding recovery valve, so that the precipitate can be recycled; 5. The present invention is designed as a multi-stage sedimentation, and the precipitates obtained in the sedimentation zone 1, the sedimentation zone 2, the sedimentation zone 3, the sedimentation zone 4, the flocculation zone and the sedimentation zone 5 can be used separately according to different components, which is more conducive to the treatment of papermaking wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of a partial cross-section of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the local enlarged structure at point A in the middle; Figure 4 It is a schematic diagram of the structure of the cooperation of the sedimentation box, the hexagonal sedimentation partition, the sedimentation zone 1, the sedimentation zone 2, the sedimentation zone 3, the sedimentation zone 4, the flocculation zone, the sedimentation zone 5 and the water distribution bucket in the present invention; Figure 5 It is a structural schematic diagram of the water distribution bucket in the present invention; Figure 6 It is a schematic diagram of the structure of the water distribution component, the upper liquid collection component and the infusion mechanism in the present invention.

[0019] The numbers in the figure represent: 001, water distribution component; 002, material discharge component; 003, upper layer liquid collection component; 004, liquid infusion mechanism; 005, material mixing component; 1. Sedimentation box; 2. Support frame; 3. Box cover; 4. Hexagonal sedimentation partition; 5. Sedimentation zone 1; 6. Sedimentation zone 2; 7. Sedimentation zone 3; 8. Sedimentation zone 4; 9. Flocculation zone; 10. Sedimentation zone 5; 11. Water distribution bucket; 12. Seepage return air hole; 13. Water distribution sleeve; 14. Water distribution level adjustment pipe; 15. Conical recovery box; 16. Recovery pipe; 17. Recovery valve; 18. Liquid collection cylinder; 19. Liquid collection pipe; 20. Liquid collection cylinder; 21. Liquid collection rod; 22. Infusion pump; 23. Clear liquid discharge pipe; 24. Flocculant addition pipe; 25. Filling valve; 26. Mixing rod; 27. Spiral mixing blade; 28. Mixing motor; 29. ​​Connecting rod float level gauge; 30. Return air pipe; 31. Water inlet pipe. DETAILED DESCRIPTION The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figures 1 to 6 As shown, this embodiment proposes a papermaking wastewater sedimentation and recovery device for papermaking, including a sedimentation box 1, a hexagonal sedimentation partition 4, a water distribution component 001 with a buffering function, a discharge component 002 with a sedimentation function, an upper layer liquid collection component 003 with a position adjustment function, and an infusion mechanism 004.

[0021] As mentioned above, a support frame 2 is provided at the bottom of the sedimentation box 1, a box cover 3 is sealed and detachably provided on the sedimentation box 1, a hexagonal sedimentation partition 4 is sealed and arranged in the sedimentation box 1, and the hexagonal sedimentation partition 4 divides the sedimentation box 1 into sedimentation zone 1 5, sedimentation zone 2 6, sedimentation zone 3 7, sedimentation zone 4 8, flocculation zone 9 and sedimentation zone 5 10 in sequence.

[0022] Among them, six connecting rod float level gauges 29 are arranged on the box cover 3, and the detection ends of the six connecting rod float level gauges 29 respectively penetrate into the sedimentation zone 1 5, the sedimentation zone 2 6, the sedimentation zone 3 7, the sedimentation zone 4 8, the flocculation zone 9 and the sedimentation zone 5 10.

[0023] Among them, six return air pipes 30 are connected to the box cover 3, and the six return air pipes 30 are respectively connected to the sedimentation zone 1 5, the sedimentation zone 2 6, the sedimentation zone 3 7, the sedimentation zone 4 8, the flocculation zone 9 and the sedimentation zone 5 10.

[0024] The box cover 3 is also connected with a water inlet pipe 31, which is connected with the first sedimentation area 5 for injecting papermaking wastewater.

[0025] As mentioned above, there are five water distribution components 001, and the five water distribution components 001 are respectively arranged in sedimentation zone 1 5, sedimentation zone 2 6, sedimentation zone 3 7, sedimentation zone 4 8 and sedimentation zone 5 10. The water distribution component 001 includes a water distribution bucket 11, a water distribution sleeve 13 and a water distribution adjustment pipe 14. The water distribution bucket 11 is arranged in sedimentation zone 1 5, sedimentation zone 2 6, sedimentation zone 3 7, sedimentation zone 4 8 and sedimentation zone 5 10. A plurality of water seepage return holes 12 are opened between the edge of the water distribution bucket 11 and the sedimentation box 1 and the hexagonal sedimentation partition 4. The water distribution sleeve 13 is connected and arranged at the bottom of the water distribution bucket 11. The water distribution adjustment pipe 14 penetrates and is sealed and slidably arranged in the water distribution sleeve 13. The water distribution adjustment pipe 14 is connected to the adjacent upper liquid extraction component 003.

[0026] Specifically, when papermaking wastewater is precipitated and recovered, the wastewater is discharged into the sedimentation area 5 through the water inlet pipe 31. After the wastewater enters the sedimentation area 5, the wastewater will be gathered at the water distribution sleeve 13 through the water distribution bucket 11. Under the action of the water distribution bucket 11, the injected wastewater is buffered, so that the wastewater flows through the water distribution sleeve 13 and the water distribution level adjusting pipe 14 to the sedimentation tank 1 and the conical recovery tank.

[0027] As mentioned above, there are six discharge components 002, which are arranged at the bottom of the sedimentation tank 1. The six discharge components 002 are respectively connected to the bottom of sedimentation zone 1 5, sedimentation zone 2 6, sedimentation zone 3 7, sedimentation zone 4 8, flocculation zone 9 and sedimentation zone 5 10. The discharge component 002 includes a conical recovery box 15 and a recovery pipe 16. The conical recovery box 15 is arranged to be connected to the bottom of the sedimentation tank 1, and the recovery pipe 16 is arranged to be connected to the bottom of the conical recovery box 15. A recovery valve 17 is installed on the recovery pipe 16.

[0028] Specifically, after the solutions in the sedimentation zone 1 5, the sedimentation zone 2 6, the sedimentation zone 3 7, the sedimentation zone 4 8, the flocculation zone 9 and the sedimentation zone 5 10 are precipitated, the impurities precipitated in the conical recovery box can be discharged through the recovery pipe 16 by opening the corresponding recovery valve 17, so that the precipitate can be recycled. The present invention, by designing a multi-stage precipitation, can separately utilize the precipitates obtained in the sedimentation zone 1 5, the sedimentation zone 2 6, the sedimentation zone 3 7, the sedimentation zone 4 8, the flocculation zone 9 and the sedimentation zone 5 10 according to different components, which is more conducive to the treatment of papermaking wastewater.

[0029] As mentioned above, there are six upper liquid taking components 003, and the six upper liquid taking components 003 are respectively arranged in the sedimentation zone 1 5, the sedimentation zone 2 6, the sedimentation zone 3 7, the sedimentation zone 4 8, the flocculation zone 9 and the sedimentation zone 5 10. The upper liquid taking components 003 include a liquid taking cylinder 18, a liquid taking tube 19, a liquid taking cylinder 20 and a liquid taking rod 21. The liquid taking cylinder 18 is arranged on the box cover 3, the liquid taking tube 19 is arranged in the liquid taking cylinder 18 through and sealingly sliding, and the liquid taking cylinder 20 is installed on the box cover 3, located The output end of the liquid taking cylinder 20 on the sedimentation zone 1 5, the sedimentation zone 2 6, the sedimentation zone 3 7, the sedimentation zone 4 8 and the sedimentation zone 5 10 passes through the water distribution and adjusting pipe 14 and is connected to the water distribution and adjusting pipe 14. The liquid taking rod 21 located in the sedimentation zone 1 5, the sedimentation zone 2 6, the sedimentation zone 3 7, the sedimentation zone 4 8 and the sedimentation zone 5 10 is arranged between the water distribution and adjusting pipe 14 and the liquid taking pipe 19, and the liquid taking rod 21 located in the flocculation zone 9 is arranged between the output end of the liquid taking cylinder 20 and the liquid taking pipe 19.

[0030] Specifically, as the wastewater level in the sedimentation tank 1 rises, the depth of the wastewater is detected by the connecting rod float level gauge 29, and the liquid extraction cylinder 20 is started. The output end of the liquid extraction cylinder 20 in the sedimentation zone 1 5 drives the water distribution level adjustment pipe 14 to move, so that the bottom end of the water distribution level adjustment pipe 14 extends to the range of 5-10 cm below the wastewater surface, thereby reducing the excessive impact of wastewater in the conical recovery tank caused by wastewater splashing, and providing the wastewater in the conical recovery tank with a better sedimentation environment. As the wastewater level in the sedimentation zone 1 5 continues to rise, the gas in the sedimentation zone 1 5 will be discharged to the air through the water seepage return hole 12 and the return pipe 30 to ensure the normal discharge of the water level.

[0031] It should be supplemented that when the flow rate of wastewater injected into the sedimentation zone 5 through the water inlet pipe 31 is unstable, an air regulating valve can be installed on the return air pipe 30. By adjusting the discharge rate of the gas in the sedimentation zone 5, the wastewater can be temporarily gathered above the water distribution bucket 11, thereby controlling the flow rate of the wastewater through the through-hole water distribution and adjusting pipe 14. Even if a small amount of wastewater flows out through the seepage return air hole 12, this part of the wastewater will flow along the edge of the hexagonal sedimentation plate and the sedimentation box 1, and will not splash large water, thereby not affecting the normal sedimentation of the wastewater in the sedimentation zone 5.

[0032] As mentioned above, the infusion mechanism 004 is arranged on one side of the sedimentation box 1, and the infusion mechanism 004 is connected and arranged between the box cover 3 and the upper liquid collection component 003, and is used to introduce the upper wastewater in the sedimentation area 1 5 into the sedimentation area 2 6, the sedimentation area 3 7, the sedimentation area 4 8, the flocculation area 9 and the sedimentation area 5 10 in sequence. The infusion mechanism 004 includes an infusion pump 22, and there are six infusion pumps 22. The infusion pumps 22 are arranged on one side of the sedimentation box 1, and the infusion pumps 22 correspond one to one with the upper liquid collection component 003. The input end of the infusion pump 22 is connected with one end of the liquid collection cylinder 18, wherein the output end of the infusion pump 22 connected with the sedimentation area 1 5, the sedimentation area 2 6, the sedimentation area 3 7, the sedimentation area 4 8 and the flocculation area 9 are respectively connected with the sedimentation area 2 6, the sedimentation area 3 7, the sedimentation area 4 8, the flocculation area 9 and the sedimentation area 5 10, and the output end of the other infusion pump 22 connected with the sedimentation area 5 10 is connected with a clear liquid discharge pipe 23.

[0033] The input end of the infusion pump 22 whose output end is connected to the flocculation area 9 is connected to a flocculant addition pipe 24 , and a filler valve 25 is installed on the flocculant addition pipe 24 .

[0034] Specifically, after the wastewater injected into the sedimentation zone 1 5 has settled for a period of time, the infusion pump 22 located on one side of the sedimentation zone 1 5 is started, and the upper layer solution of the wastewater in the sedimentation zone 1 5 is pumped into the sedimentation zone 2 6 through the infusion pump 22, and the liquid extraction cylinder 20 is started as the water level in the sedimentation zone 1 5 drops. It should be supplemented that in order not to affect the continuous sedimentation of the wastewater in the sedimentation tank 1, the water distribution and adjustment sleeve is set as far away from the liquid extraction pipe 19 as possible, so that the wastewater can be continuously injected into the sedimentation zone 1 5 through the water inlet pipe 31, and when the infusion pump 22 is started, the wastewater can be pumped into the sedimentation zone 2 6, the sedimentation zone 3 7, the sedimentation zone 4 8, the flocculation zone 9 and the sedimentation zone 5 10 in turn, so that the wastewater is precipitated step by step in the sedimentation zone 2 6, the sedimentation zone 3 7 and the sedimentation zone 4 8.

[0035] As mentioned above, a mixing component 005 is also installed on the box cover 3. The mixing component 005 penetrates into the flocculation zone 9 and is used to stir the wastewater in the flocculation zone 9. The mixing component 005 includes a mixing rotating rod 26, a spiral mixing blade 27 and a mixing motor 28. The mixing rotating rod 26 penetrates and is rotatably arranged on the box cover 3. The spiral mixing blade 27 is arranged on the mixing rotating rod 26. The spiral mixing blade 27 is located in the flocculation zone 9. The mixing motor 28 is installed on the box cover 3, and the output end of the mixing motor 28 is connected to one end of the mixing rotating rod 26.

[0036] Specifically, after the sedimentation from the first sedimentation zone 5 to the fourth sedimentation zone 8, the waste liquid in the fourth sedimentation zone 8 is injected into the flocculation zone 9 through the infusion pump 22, and the flocculant addition pipe 24 is connected to the device carrying the flocculant in the prior art, and the filling valve 25 is opened to mix the flocculant in the flocculant device with the wastewater through the flocculant addition pipe 24. After the flocculant and the wastewater are initially mixed in the infusion pump 22, they are pumped into the flocculation zone 9, and the mixing motor 28 is started at this time, and the output end of the mixing motor 28 drives the mixing rotating rod 26 to rotate. The rotation of the mixing rotating rod 26 drives the spiral mixing blade 27 to rotate. The flocculant and the wastewater in the flocculation zone 9 are stirred by the rotation of the spiral mixing blade 27, so that the wastewater and the flocculant are fully mixed. Under the action of the flocculant, the unprecipitated impurities suspended in the wastewater are flocculated, and then the flocculated solution is pumped to the sedimentation zone 5 10 through the infusion pump 22 for final precipitation. Then, by opening the infusion pump 22 on one side of the sedimentation zone 5 10, the clear liquid in the upper layer of the sedimentation zone 5 10 can be discharged through the clear liquid discharge pipe 23.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A papermaking wastewater sedimentation and recovery device for papermaking, characterized in that: include: A sedimentation box (1), wherein a support frame (2) is provided at the bottom of the sedimentation box (1), and a box cover (3) is provided on the sedimentation box (1) in a sealed and detachable manner; A hexagonal sedimentation baffle (4), wherein the hexagonal sedimentation baffle (4) is sealed and arranged in the sedimentation box (1), and the hexagonal sedimentation baffle (4) sequentially divides the sedimentation box (1) into a sedimentation zone 1 (5), a sedimentation zone 2 (6), a sedimentation zone 3 (7), a sedimentation zone 4 (8), a flocculation zone (9), and a sedimentation zone 5 (10); A water distribution component (001) having a buffering function, wherein five water distribution components (001) are provided, and the five water distribution components (001) are respectively arranged in the first sedimentation area (5), the second sedimentation area (6), the third sedimentation area (7), the fourth sedimentation area (8) and the fifth sedimentation area (10); A discharge assembly (002) having a sedimentation function, wherein six discharge assemblies (002) are provided, and the six discharge assemblies (002) are arranged at the bottom of the sedimentation box (1), and the six discharge assemblies (002) are respectively connected to the bottom of the sedimentation zone 1 (5), the sedimentation zone 2 (6), the sedimentation zone 3 (7), the sedimentation zone 4 (8), the flocculation zone (9), and the sedimentation zone 5 (10); an upper layer liquid taking component (003) with a position adjustment function, wherein six upper layer liquid taking components (003) are provided, and the six upper layer liquid taking components (003) are respectively arranged in the first sedimentation zone (5), the second sedimentation zone (6), the third sedimentation zone (7), the fourth sedimentation zone (8), the flocculation zone (9) and the fifth sedimentation zone (10); A liquid infusion mechanism (004), the liquid infusion mechanism (004) being arranged on one side of the sedimentation tank (1), the liquid infusion mechanism (004) being arranged in communication between the tank cover (3) and the upper layer liquid taking component (003), and being used for sequentially introducing the upper layer wastewater in the sedimentation zone 1 (5) into the sedimentation zone 2 (6), the sedimentation zone 3 (7), the sedimentation zone 4 (8), the flocculation zone (9) and the sedimentation zone 5 (10).

2. A papermaking wastewater sedimentation and recovery device for papermaking according to claim 1, characterized in that: The water distribution assembly (001) comprises: a water distribution hopper (11), the water distribution hopper (11) being arranged in the first sedimentation zone (5), the second sedimentation zone (6), the third sedimentation zone (7), the fourth sedimentation zone (8) and the fifth sedimentation zone (10), and a plurality of water seepage and air return holes (12) being provided between the edge of the water distribution hopper (11) and the sedimentation box (1) and the hexagonal sedimentation partition (4); A water distribution sleeve (13), the water distribution sleeve (13) being arranged in communication with the bottom of the water distribution bucket (11); A water distribution and adjustment pipe (14), the water distribution and adjustment pipe (14) penetrates through and is sealingly and slidably disposed in the water distribution sleeve (13), and the water distribution and adjustment pipe (14) is connected to the adjacent upper layer liquid extraction assembly (003).

3. A papermaking wastewater sedimentation and recovery device for papermaking according to claim 2, characterized in that: The discharge assembly (002) comprises: A conical recovery box (15), the conical recovery box (15) being arranged in communication with the bottom of the sedimentation box (1); A recovery pipe (16), the recovery pipe (16) is arranged in communication with the bottom of the conical recovery box (15), and a recovery valve (17) is installed on the recovery pipe (16).

4. A papermaking wastewater sedimentation and recovery device for papermaking according to claim 3, characterized in that: The upper layer liquid extraction component (003) comprises: A liquid collection cylinder (18), wherein the liquid collection cylinder (18) is disposed through the box cover (3); a liquid collection tube (19), the liquid collection tube (19) passing through and being sealingly slidably disposed in the liquid collection cylinder (18); a liquid taking cylinder (20), the liquid taking cylinder (20) being mounted on the box cover (3), the output ends of the liquid taking cylinders (20) located in the first sedimentation zone (5), the second sedimentation zone (6), the third sedimentation zone (7), the fourth sedimentation zone (8) and the fifth sedimentation zone (10) passing through the water distribution level adjustment pipe (14) and being connected to the water distribution level adjustment pipe (14); The liquid collecting rod (21) is arranged between the water distribution level adjustment pipe (14) and the liquid collecting pipe (19) in the first sedimentation zone (5), the second sedimentation zone (6), the third sedimentation zone (7), the fourth sedimentation zone (8) and the fifth sedimentation zone (10); and the liquid collecting rod (21) is arranged between the output end of the liquid collecting cylinder (20) and the liquid collecting pipe (19) in the flocculation zone (9).

5. A papermaking wastewater sedimentation and recovery device for papermaking according to claim 4, characterized in that: The infusion mechanism (004) comprises: An infusion pump (22), wherein six infusion pumps (22) are provided, and the infusion pumps (22) are arranged on one side of the sedimentation tank (1). The infusion pumps (22) correspond to the upper liquid collection components (003) one by one, and the input end of the infusion pump (22) is connected to one end of the liquid collection cylinder (18), wherein the output end of the infusion pump (22) connected to the sedimentation zone 1 (5), the sedimentation zone 2 (6), the sedimentation zone 3 (7), the sedimentation zone 4 (8) and the flocculation zone (9) are respectively connected to the sedimentation zone 2 (6), the sedimentation zone 3 (7), the sedimentation zone 4 (8), the flocculation zone (9) and the sedimentation zone 5 (10), and the output end of another infusion pump (22) connected to the sedimentation zone 5 (10) is connected to a clear liquid discharge pipe (23).

6. A papermaking wastewater sedimentation and recovery device for papermaking according to claim 5, characterized in that: The input end of the infusion pump (22) whose output end is connected to the flocculation zone (9) is connected to a flocculant addition pipe (24), and a filler valve (25) is installed on the flocculant addition pipe (24).

7. A papermaking wastewater sedimentation and recovery device for papermaking according to claim 6, characterized in that: A mixing component (005) is also installed on the box cover (3), and the mixing component (005) penetrates into the flocculation area (9) and is used to stir the wastewater in the flocculation area (9).

8. A papermaking wastewater sedimentation and recovery device for papermaking according to claim 7, characterized in that: The mixing component (005) comprises: A mixing rotating rod (26), the mixing rotating rod (26) penetrating through and rotatably disposed on the box cover (3); A spiral mixing blade (27), wherein the spiral mixing blade (27) is arranged on the mixing rotating rod (26), and the spiral mixing blade (27) is located in the flocculation zone (9); A mixing motor (28), the mixing motor (28) being mounted on the box cover (3), and the output end of the mixing motor (28) being connected to one end of the mixing rotating rod (26).

9. A papermaking wastewater sedimentation and recovery device for papermaking according to claim 8, characterized in that: Six connecting rod float level gauges (29) are also arranged on the box cover (3), and the detection ends of the six connecting rod float level gauges (29) respectively penetrate into the first sedimentation zone (5), the second sedimentation zone (6), the third sedimentation zone (7), the fourth sedimentation zone (8), the flocculation zone (9) and the fifth sedimentation zone (10); The box cover (3) is also connected to six return air pipes (30), and the six return air pipes (30) are respectively connected to the first sedimentation zone (5), the second sedimentation zone (6), the third sedimentation zone (7), the fourth sedimentation zone (8), the flocculation zone (9) and the fifth sedimentation zone (10).

10. A papermaking wastewater sedimentation and recovery device for papermaking according to claim 9, characterized in that: The box cover (3) is connected to a water inlet pipe (31), which is connected to the first sedimentation area (5) and is used for injecting papermaking wastewater.

Images