CN117323704A - Sedimentation tank for waste nitric acid wastewater treatment and sedimentation method thereof - Google Patents

Abstract

The invention discloses a sedimentation tank for waste nitric acid wastewater treatment in the technical field of sedimentation tanks, which includes a tank body, a horizontal plate, a mixing mechanism, a dosing mechanism, a circulating coagulation aid mechanism, a mud scraping mechanism, a crushing mechanism, a square tank, and an anti-blocking mechanism. mechanism. The invention is equipped with a crushing mechanism and an anti-clogging mechanism. During the process of discharging sewage, the third motor rotates with the main shaft and at the same time with the crushing mechanism. The rotation of the crushing mechanism can cut large particles of sediment. , cut it into small particles of sediment to avoid clogging the sewage outlet. At the same time, under the action of the anti-clogging mechanism, the motor rotates with the transmission shaft, and drives the second pulley and the second pulley through the first pulley and the transmission belt. The rotating shaft rotates, and the rotation of the transmission shaft causes the two sludge transport wheels to rotate to transport the sediment and speed up the sewage discharge. At the same time, the rotation of the rotating shaft and the crushing wheel can prevent the sewage pipe from being clogged while transporting the sludge. effect.

Description

Sedimentation tank for waste nitric acid wastewater treatment and sedimentation method thereof

Technical Field

The utility model relates to the technical field of sedimentation tanks, in particular to a sedimentation tank for treating waste nitric acid wastewater and a sedimentation method thereof.

Background

The sedimentation tank is a structure for removing suspended matters in water by utilizing sedimentation, and utilizes the natural sedimentation or coagulating sedimentation of water to remove suspended matters in water, and the sedimentation tank is divided into a horizontal sedimentation tank and a vertical sedimentation tank according to the water flow direction, wherein the sedimentation effect is determined by the water flow rate in the sedimentation tank and the residence time of water in the tank, and the sedimentation tank is widely used in industrial wastewater treatment, wherein the sedimentation tank is also commonly used in the wastewater treatment process of waste nitric acid.

Patent number: CN216537030U discloses: the utility model discloses a three-stage sedimentation tank for acid-containing wastewater pretreatment, which comprises a first sedimentation tank, a second sedimentation tank and a third sedimentation tank, wherein two sides of the second sedimentation tank are respectively communicated with the first sedimentation tank and the third sedimentation tank, two ends of the guide pipe are respectively sheathed with a positioning sleeve in a threaded manner, two side inner walls of the second sedimentation tank and one side inner wall of the first sedimentation tank and one side inner wall of the third sedimentation tank, which are close to the second sedimentation tank, are fixedly connected with supporting blocks, clamping rods are inserted on the supporting blocks in a sliding manner, clamping grooves corresponding to the clamping rods are formed in the top ends of the positioning sleeves, and a limiting sleeve is fixedly sheathed on one end, which is close to the positioning sleeve, of the positioning sleeve.

In the process of using, the above patent is assembled on site because the sedimentation tank, when the sedimentation tank discharges sediment, because the effect of flocculation is bigger some sediment particles, can block up blowdown hole or blowdown pipe sometimes, influence the effect of normal blowdown, lead to the unable normal work of whole device, influence the use of sedimentation tank, when using, need gradually deposit the acid water, filter and add precipitant etc. but coagulation and flocculation effect is not ideal enough, and fluid mixing, reaction, flocculation speed are slow, can not adapt to the sedimentation tank that the velocity of flow is faster.

Based on the above, the utility model designs a sedimentation tank for waste nitric acid wastewater treatment and a sedimentation method thereof, so as to solve the problems.

Disclosure of Invention

The utility model aims to provide a sedimentation tank for waste nitric acid wastewater treatment and a sedimentation method thereof, which are used for solving the problems that large-particle sediments are easy to block a sewage outlet or a sewage pipe and the problems of low coagulation and flocculation speed and low reaction speed in the prior art, thereby being applicable to various sedimentation tanks.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a waste nitric acid is sedimentation tank for waste nitric acid waste water treatment, includes cell body, diaphragm, mixing mechanism, dosing mechanism, circulation helps congeal the mechanism, scrapes mud mechanism, broken mechanism, square groove, prevents blockking up mechanism, blow off pipe, control valve, drain, first baffle, second baffle, coagulation tank, flocculation tank, sedimentation tank, fixed plate, barrel, first baffle, second baffle, basin, pond, water inlet, delivery port, the upper end fixedly connected with diaphragm of cell body, fixed mounting has mixing mechanism, circulation to help congeal the mechanism and scrapes mud mechanism on the diaphragm, the inside of cell body is separated into coagulation tank, flocculation tank and sedimentation tank through first baffle and second baffle, scrape mud mechanism setting directly over the sedimentation tank, the lower extreme of scraping mud mechanism is equipped with broken mechanism, square groove has been seted up to the bottom of cell body, prevent blockking up mechanism in the square groove fixed mounting, prevent blockking up mechanism includes motor, transmission shaft, first, fortune mud wheel, drive belt, second band pulley and motor, second band pulley and a fixed connection are had a reel to the motor, a pair of transmission shaft and a fixed connection.

Through the scheme: the sewage discharge speed can be increased, and meanwhile, the rotation of the rotating shaft and the crushing wheel can play a role in preventing the sewage discharge pipe from being blocked when the sludge is conveyed.

As a further scheme of the utility model, the two sludge conveying wheels are arranged in the sewage outlet, the first belt wheel is in transmission connection with the second belt wheel belt through a transmission belt, the second belt wheel is fixedly connected with one end of a rotating shaft, the rotating shaft is arranged at the bottom of the sewage outlet, the rotating shaft penetrates through the sewage pipe to be rotatably arranged in the sewage pipe, a sealing seat is arranged on the sewage pipe, the rotating shaft is in sealing connection with the sealing seat through a second sealing ring, the crushing wheel and the hinge are fixedly connected to the rotating shaft, and the crushing wheel and the hinge are arranged in the sewage pipe.

Through the scheme: the opening and closing of the sewage pipes can be effectively controlled, so that the effect of convenient control is achieved by matching with the conveying of the sludge.

As a further scheme of the utility model, the crushing mechanism comprises a connecting shaft, a first connecting rod, first prismatic blades, second connecting rods and second prismatic blades, wherein the connecting shaft is fixedly connected with the bottom end of the mud scraping mechanism, eight first connecting rods are annularly distributed on the side face of the connecting shaft, the first prismatic blades are fixedly installed on the first connecting rods, eight second connecting rods are arranged below the first connecting rods, and the second prismatic blades are fixedly installed on the second connecting rods.

As a further scheme of the utility model, the mixing mechanism comprises a first motor, a first coupler, a stirring rod, a large gear and stirring blades, wherein the output end of the first motor is in transmission connection with the stirring rod through the first coupler, the first coupler is fixedly arranged at the upper end of the transverse plate, and the stirring rod is fixedly connected with the large gear and the stirring blades.

As a further scheme of the utility model, the dosing mechanism comprises a pipeline and a spraying mechanism, the pipeline is communicated with the two spraying mechanisms, the spraying mechanism comprises a fixed seat, a medicine inlet hole, a rotating body, a connecting pipe, rolling bodies, a first sealing ring, a pinion and a spraying head, the medicine inlet hole is formed in the side face of the fixed seat, the medicine inlet hole is communicated with the pipeline, a circular rail is formed in the fixed seat, a plurality of rolling bodies are arranged in the circular rail, the rolling bodies are movably connected with the circular rail formed in the connecting pipe, the connecting pipe is rotatably connected in the fixed seat, and the first sealing ring is mounted on the surface of the rolling bodies and is matched with a groove in an inner cavity of the fixed seat.

As a further scheme of the utility model, the connecting pipe is fixedly connected to the rotating body, a pinion is fixedly connected to the outer side of the rotating body, the pinion is meshed with the large gear, a sprinkler head is arranged at the lower end of the rotating body, and a plurality of oblique spray heads are arranged on the sprinkler head.

As a further scheme of the utility model, the circulating coagulation assisting mechanism comprises a second motor, a second coupler, a rotating rod, a first meshing gear, a large impeller, a transmission rod, a second meshing gear, small impellers and bearings, wherein an output shaft of the second motor is in transmission connection with the rotating rod through the second coupler, the second coupler is fixedly arranged at the upper end of a transverse plate, the first meshing gear and the large impellers are fixedly connected onto the rotating rod, the first meshing gear is respectively in meshing connection with four second meshing gears, the four second meshing gears are respectively in fixed connection with four transmission rods, the upper ends of the four transmission rods are fixedly arranged in the four bearings, the outer rings of the four bearings are fixedly arranged at the lower ends of the second coupler, and the lower ends of the four transmission rods are fixedly connected with the small impellers.

As a further scheme of the utility model, the mud scraping mechanism comprises a third motor, a third coupler, a main shaft and a mud scraping plate, wherein an output shaft of the third motor is in transmission connection with the main shaft through the third coupler, the third coupler is fixedly arranged at the upper end of the transverse plate, the mud scraping plate is fixedly connected onto the main shaft, the lower end of the mud scraping plate is in contact with the bottom end in the sedimentation tank, and the lower end of the main shaft is fixedly connected with the crushing mechanism.

As a further scheme of the utility model, the sewage outlet is arranged at the bottom end inside the sedimentation tank, the bottom end of the sewage outlet is connected with the sewage pipe, one end of the sewage pipe is connected with the control valve, the upper end inside the sedimentation tank is provided with two water tanks, the two sewage outlets are all communicated with the water tank, the right side of the water tank is provided with a water outlet, the left side of the coagulation tank is provided with a water inlet, the center of the flocculation tank is symmetrically and fixedly connected with two fixing plates, a cylinder is fixedly arranged between the two fixing plates, the lower end of the circulating coagulation assisting mechanism is arranged inside the cylinder, the right side inside the flocculation tank is provided with a first baffle, the left side inside the sedimentation tank is provided with a second baffle, and the upper part of the flocculation tank is provided with a dosing pipe.

The sedimentation method using the sedimentation tank for waste nitric acid wastewater treatment of any one of the above, comprising the following steps:

s1: firstly, adding nitric acid wastewater into a coagulation pond through a water inlet, driving a large gear and a stirring blade to rotate through a stirring rod by a first motor, simultaneously carrying a rotating body of two spraying mechanisms to rotate through rotation of the large gear, simultaneously conveying a coagulant into the two spraying mechanisms through a pipeline, mixing and stirring the added nitric acid wastewater under the action of the stirring blade, simultaneously adding the coagulant uniformly through rotation of the two spraying mechanisms to achieve a better coagulation effect, coagulating the nitric acid wastewater, and accelerating flocculation of the nitric acid wastewater;

s2: the flocculated nitric acid wastewater enters a flocculation tank, a coagulant aid is added into the nitric acid wastewater in the flocculation tank through a dosing pipe, a second motor is provided with a rotating rod to rotate to drive a first meshing gear and a large impeller to rotate, the first meshing gear can drive a plurality of second meshing gears to rotate simultaneously, and the rotation of the first meshing gear drives a small impeller at the lower end to rotate simultaneously, so that the coagulated nitric acid wastewater is sucked from the upper part of a cylinder and discharged from the lower part, the nitric acid wastewater can form circulating flow, the nitric acid wastewater can be quickly mixed with the coagulant aid to react, flocculation is accelerated to form larger sediment, and the nitric acid wastewater is purified;

s3: the nitric acid waste water after the flocculation is accomplished can flow to the sedimentation tank in, carry out the sediment in the bottom of sedimentation tank, in the time of the sediment, under the rotation of third motor drive main shaft, make and scrape mud board and broken mechanism rotate, scrape mud board and scrape the sediment and to the drain in broken mechanism can cut the precipitate of macroparticle and smash, then sediment rethread drain is discharged, and the upper clean water after the purification can flow into the pond through the basin in, then the rethread delivery port is discharged.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, through the crushing mechanism and the anti-blocking mechanism, in the sewage discharging process, the third motor rotates along the main shaft and rotates along the crushing mechanism, the crushing mechanism is arranged at the sewage discharging outlet, the large-particle sediment can be cut by rotation of the crushing mechanism, and the large-particle sediment can be cut into small-particle sediment, so that the sewage discharging outlet is prevented from being blocked, and under the action of the anti-blocking mechanism, the motor rotates along the transmission shaft, and rotates along the second belt wheel and the rotating shaft through the first belt wheel and the transmission belt, the sediment is conveyed by rotation of the transmission shaft along the two mud conveying wheels, so that the sewage discharging speed is accelerated, and meanwhile, the sewage discharging pipe is prevented from being blocked by rotation of the rotating shaft and the crushing wheel while the sludge is conveyed.

2. According to the utility model, through the chemical adding mechanism, the first motor drives the stirring rod to rotate, and the large gear fixedly connected to the stirring rod can drive the rotating bodies on the two spraying mechanisms which are meshed and connected with the stirring rod to rotate, and the spraying heads at the bottom ends of the rotating bodies are driven to rotate through the rotation of the rotating bodies, so that the coagulant conveyed to the spraying mechanisms through the pipeline is sprayed out through the inclined spray heads arranged on the spraying heads, and the coagulant can react with waste water quickly, thereby achieving the effect of high-efficiency coagulation.

3. According to the utility model, through the circulation coagulation assisting mechanism, after the coagulated wastewater enters the flocculation tank, the rotating rod is driven to rotate under the rotating action of the second motor, the rotating rod can rotate with the first meshing gears and the large impellers, the first meshing gears can rotate with the four second meshing gears in meshing connection with the first meshing gears, the second meshing gears rotate with the transmission rod, the transmission rod rotates with the small impellers, the coagulated wastewater is sucked from the upper part of the cylinder under the rotating action of the large impellers and the four small impellers, and then is discharged from the lower end of the cylinder, so that a good flocculation effect is achieved, and the wastewater can uniformly and rapidly react with the high polymer coagulant aid.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic overall sectional view of the present utility model;

FIG. 3 is a schematic view of the overall bottom structure of the present utility model;

FIG. 4 is a schematic diagram of a mixing mechanism according to the present utility model;

FIG. 5 is a schematic view of an exploded construction of the spray mechanism of the present utility model;

FIG. 6 is a schematic view of the structure of the circulating coagulation aiding mechanism of the present utility model;

FIG. 7 is a schematic view of a mud scraping mechanism according to the present utility model;

FIG. 8 is a schematic view of the crushing mechanism of the present utility model;

FIG. 9 is a schematic view of the anti-clogging mechanism of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a cell body; 2. a cross plate; 3. a mixing mechanism; 301. a first motor; 302. a first coupling; 303. a stirring rod; 304. a large gear; 305. stirring blades; 4. a dosing mechanism; 401. a pipeline; 402. a spraying mechanism; 4021. a fixing seat; 4022. a medicine inlet hole; 4023. a rotating body; 4024. a connecting pipe; 4025. a rolling element; 4026. a first seal ring; 4027. a pinion gear; 4028. a spray head; 5. a circulating coagulation assisting mechanism; 501. a second motor; 502. a second coupling; 503. a rotating lever; 504. a first meshing gear; 505. a large impeller; 506. a transmission rod; 507. a second meshing gear; 508. a small impeller; 509. a bearing; 6. a mud scraping mechanism; 601. a third motor; 602. a third coupling; 603. a main shaft; 604. a mud scraping plate; 7. a crushing mechanism; 701. a connecting shaft; 702. a first connecting rod; 703. a first prismatic blade; 704. a second connecting rod; 705. a second prismatic blade; 8. a square groove; 9. an anti-blocking mechanism; 901. a motor; 902. a transmission shaft; 903. a first pulley; 904. a mud transporting wheel; 905. a transmission belt; 906. a second pulley; 907. a rotating shaft; 908. a second seal ring; 909. a crushing wheel; 9010. twisting leaves; 10. a blow-down pipe; 101. a sealing seat; 11. a control valve; 12. a sewage outlet; 13. a first separator; 14. a second separator; 15. a coagulation pool; 16. a flocculation tank; 17. a sedimentation tank; 18. a fixing plate; 19. a cylinder; 20. a first baffle; 21. a second baffle; 22. a water tank; 23. a pool; 24. a water inlet; 25. a water outlet; 26. a medicine adding pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the utility model:

referring to fig. 2, 3 and 9, the utility model provides a sedimentation tank for waste nitric acid wastewater treatment, which comprises a tank body 1, a diaphragm 2, a mixing mechanism 3, a dosing mechanism 4, a circulating coagulation assisting mechanism 5, a mud scraping mechanism 6, a crushing mechanism 7, a square groove 8, an anti-blocking mechanism 9, a sewage pipe 10, a control valve 11, a sewage drain 12, a first partition 13, a second partition 14, a coagulation tank 15, a flocculation tank 16, a sedimentation tank 17, a fixed plate 18, a cylinder 19, a first baffle 20, a second baffle 21, a water tank 22, a water tank 23, a water inlet 24 and a water outlet 25, wherein the diaphragm 2 is fixedly connected with the upper end of the tank body 1, the mixing mechanism 3, the circulating coagulation assisting mechanism 5 and the mud scraping mechanism 6 are fixedly arranged on the diaphragm 2, the inside the tank body 1 is divided into the coagulation tank 15, the flocculation tank 16 and the sedimentation tank 17 by the first partition 14, the first partition 13, the second partition 14 is arranged right above the sedimentation tank 17, the crushing mechanism 7 is arranged at the lower end of the square groove 6, the bottom end of the tank body 1, the bottom end of the tank body 8 is provided with the anti-blocking mechanism 903, the motor 901 is fixedly connected with a motor 901, the anti-blocking mechanism 904 is fixedly connected with the motor 902 and the motor 902, the motor 902 is fixedly connected with the two belt wheels 902 and the motor 902, the motor 902 and the motor 902 is fixedly connected with the two belt shafts 902 and 902 are arranged at the two ends of the transmission shafts and 902 fixedly.

Two fortune mud wheels 904 all set up in drain 12, first band pulley 903 passes through drive belt 905 and second band pulley 906 belt drive connection, second band pulley 906 and the one end fixed connection of pivot 907, pivot 907 sets up in the bottom of drain 12, pivot 907 passes drain 10 rotation and installs in drain 10, be provided with seal receptacle 101 on the drain 10, pivot 907 passes through second seal washer 908 and seal receptacle 101 sealing connection, fixedly connected with crushing wheel 909 and hank leaf 9010 in the pivot 907, crushing wheel 909 and hank leaf 9010 all establish the inside at drain 10.

What needs to be further supplemented is: when the mud transporting wheel 904 is specifically used, the circumferential side wall of the mud transporting wheel 904 is provided with evenly symmetrical grooves for feeding mud, the motor 901 can drive the transmission shaft 902 to rotate, the transmission shaft 902 rotates through the first belt pulley 903 and the transmission belt 905 and drives the second belt pulley 906, the second belt pulley 906 can rotate through the rotation shaft 907, the rotation of the rotation shaft 907 drives the crushing wheel 909 and the hinge 9010 to rotate in the sewage pipe 10, the dredging effect is achieved when sediment is conveyed, and the sediment can be discharged quickly and meanwhile the phenomenon that the sewage pipe 10 is blocked is avoided.

Referring to fig. 8, the crushing mechanism 7 includes a connecting shaft 701, a first connecting rod 702, a first prismatic blade 703, a second connecting rod 704 and a second prismatic blade 705, the connecting shaft 701 is fixedly connected with the bottom end of the mud scraping mechanism 6, eight first connecting rods 702 are annularly distributed on the side surface of the connecting shaft 701, the first prismatic blade 703 is fixedly installed on the first connecting rods 702, eight second connecting rods 704 are arranged below the first connecting rods 702, and the second prismatic blades 705 are fixedly installed on the second connecting rods 704.

What needs to be further supplemented is: when the device is specifically used, under the action that the main shaft 603 drives the crushing mechanism 7 to rotate, the first prismatic blade 703 and the second prismatic blade 705 on the crushing mechanism 7 can form a cutting effect on large-particle sediments, and the large-particle sediments are cut into small particles, so that the blockage phenomenon of the sewage outlet 12 is avoided.

Referring to fig. 4 and 5, the mixing mechanism 3 includes a first motor 301, a first coupling 302, a stirring rod 303, a large gear 304 and a stirring blade 305, wherein an output end of the first motor 301 is in transmission connection with the stirring rod 303 through the first coupling 302, the first coupling 302 is fixedly mounted at an upper end of the transverse plate 2, and the stirring rod 303 is fixedly connected with the large gear 304 and the stirring blade 305.

The dosing mechanism 4 comprises a pipeline 401 and a spraying mechanism 402, the pipeline 401 is communicated with the two spraying mechanisms 402, the spraying mechanism 402 comprises a fixed seat 4021, a medicine inlet hole 4022, a rotating body 4023, a connecting pipe 4024, a rolling body 4025, a first sealing ring 4026, a pinion 4027 and a spraying head 4028, the medicine inlet hole 4022 is formed in the side face of the fixed seat 4021, the medicine inlet hole 4022 is communicated with the pipeline 401, a circular rail is formed in the fixed seat 4021, a plurality of rolling bodies 4025 are arranged in the circular rail, the rolling bodies 4025 are movably connected with the circular rail formed in the connecting pipe 4024, the connecting pipe 4024 is rotatably connected in the fixed seat 4021, and the first sealing ring 4026 is arranged on the surface of the rolling bodies 4025 and is matched with an inner cavity groove of the fixed seat 4021.

The connecting pipe 4024 is fixedly connected to the rotating body 4023, a pinion 4027 is fixedly connected to the outer side of the rotating body 4023, the pinion 4027 is connected with the large gear 304 in a meshed mode, a spray head 4028 is arranged at the lower end of the rotating body 4023, and a plurality of oblique spray heads are arranged on the spray head 4028.

Further supplementary explanation is needed: when the flocculation device is specifically used, the stirring rod 303 rotates and simultaneously drives the rotating bodies 4023 which are movably connected to the two fixing seats 4021 to rotate through the large gear 304, and coagulant conveyed to the spraying mechanism 402 through the pipeline 401 is sprayed in a rotating mode under the rotating action of the rotating bodies 4023, so that the coagulant can react with wastewater uniformly and rapidly to generate flocculation.

Referring to fig. 6, the circulation coagulation aiding mechanism 5 includes a second motor 501, a second coupling 502, a rotating rod 503, a first meshing gear 504, a large impeller 505, a driving rod 506, a second meshing gear 507, a small impeller 508 and a bearing 509, wherein an output shaft of the second motor 501 is in transmission connection with the rotating rod 503 through the second coupling 502, the second coupling 502 is fixedly installed at the upper end of the transverse plate 2, the first meshing gear 504 and the large impeller 505 are fixedly connected to the rotating rod 503, the first meshing gear 504 is respectively in meshing connection with four second meshing gears 507, the four second meshing gears 507 are respectively in fixed connection with four driving rods 506, the upper ends of the four driving rods 506 are fixedly installed in four bearings 509, the outer rings of the four bearings 509 are fixedly installed at the lower ends of the second coupling 502, and the lower ends of the four driving rods 506 are fixedly connected with the small impeller 508.

The mud scraping mechanism 6 comprises a third motor 601, a third coupling 602, a main shaft 603 and a mud scraping plate 604, wherein an output shaft of the third motor 601 is in transmission connection with the main shaft 603 through the third coupling 602, the third coupling 602 is fixedly arranged at the upper end of the transverse plate 2, the mud scraping plate 604 is fixedly connected to the main shaft 603, the lower end of the mud scraping plate 604 is in contact with the bottom end inside the sedimentation tank 17, and the lower end of the main shaft 603 is fixedly connected with the crushing mechanism 7.

The drain 12 sets up in the inside bottom of sedimentation tank 17, the bottom of drain 12 is connected with blow off pipe 10, the one end of blow off pipe 10 is connected with control valve 11, the inside upper end of sedimentation tank 17 is equipped with two basin 22, two drain 12 all are linked together with pond 23, the right side of pond 23 is equipped with delivery port 25, the left side of coagulation tank 15 is equipped with water inlet 24, the center department symmetry fixedly connected with two fixed plates 18 of flocculation tank 16, fixed mounting has barrel 19 between two fixed plates 18, the lower extreme setting of circulation helps the mechanism 5 is in the inside of barrel 19, the inside right side of flocculation tank 16 is equipped with first baffle 20, the inside left side of sedimentation tank 17 is equipped with second baffle 21, flocculation tank 16 top is equipped with charge pipe 26.

The sedimentation method using the sedimentation tank for waste nitric acid wastewater treatment comprises the following steps:

s1: firstly, adding nitric acid wastewater into a coagulation tank 15 through a water inlet 24, driving a large gear 304 and a stirring blade 305 to rotate by a stirring rod 303 by a first motor 301, simultaneously driving a rotating body 4023 of two spraying mechanisms 402 to rotate by the rotation of the large gear 304, simultaneously conveying coagulant into the two spraying mechanisms 402 through a pipeline 401, mixing and stirring the added nitric acid wastewater under the action of the stirring blade 305, and simultaneously adding the coagulant uniformly through the rotation of the two spraying mechanisms 402 to achieve a better coagulation effect, coagulating the nitric acid wastewater and accelerating the flocculation of the nitric acid wastewater;

s2: the flocculated nitric acid wastewater enters the flocculation tank 16, coagulant aid is added into the nitric acid wastewater in the flocculation tank 16 through a dosing pipe 26, a second motor 501 drives a first meshing gear 504 and a large impeller 505 to rotate under the action of rotating a rotating rod 503, the first meshing gear 504 can simultaneously rotate with a plurality of second meshing gears 507, and the first meshing gear 504 simultaneously rotates with a small impeller 508 at the lower end, so that the coagulated nitric acid wastewater is sucked from the upper part of a cylinder 19 and discharged from the lower part, the nitric acid wastewater can form circulating flow, the nitric acid wastewater can be quickly mixed with the coagulant aid to react, flocculation is accelerated to form larger sediment, and the nitric acid wastewater is purified;

s3: the nitric acid waste water after flocculation is completed flows into the sedimentation tank 17, the bottom of the sedimentation tank 17 is settled, and simultaneously, the third motor 601 drives the main shaft 603 to rotate, so that the scraper 604 and the crushing mechanism 7 rotate, the scraper 604 scrapes the sediment to the sewage outlet 12, the crushing mechanism 7 can cut and crush the large-particle sediment, then the sediment is discharged through the sewage outlet 12, and the purified upper clean water flows into the water tank 23 through the water tank 22 and is discharged through the water outlet 25.

What needs to be further supplemented is: when the flocculation tank is specifically used, the large impeller 505 is driven by the four small impellers 508 to rotate, so that the wastewater in the flocculation tank 16 flows downwards from top to bottom, and the added coagulant aid can be quickly mixed with the wastewater to achieve the purpose of accelerating flocculation efficiency.

The working principle of the utility model is as follows: the waste nitric acid wastewater is introduced into the tank body 1 from the water inlet 24, the waste nitric acid wastewater is firstly fully mixed with the added coagulant in the coagulation tank 15 under the action of the mixing mechanism 3, the stirring rod 303 on the mixing mechanism 3 rotates, the large gear 304 drives the rotating body 4023 which is engaged and connected with the large gear 304 through the small gear 4027 on the two spraying mechanisms 402 to rotate, the coagulant can be rotationally sprayed by the rotation of the rotating body 4023, the contact between the coagulant and the waste nitric acid wastewater is quickened, the mixing and the reaction are quickened, and the coagulation efficiency is improved.

The coagulated waste nitric acid wastewater flows into the flocculation tank 16, coagulant aid is added into the flocculation tank 16 through 26, the second motor 501 is started, the second motor 501 rotates with the rotating rod 503 and the large impeller 505, the rotating rod 503 rotates and simultaneously rotates with the four second meshing gears 507 meshed and connected with the first meshing gears 504 through the first meshing gears 504, the second meshing gears 507 rotate with the transmission rod 506, the small impeller 508 rotates through the rotation of the first meshing gears 504, and the waste nitric acid wastewater flows from top to bottom in the flocculation tank 16 and the cylinder 19 under the rotation of the large impeller 505 and the four small impellers 508, so that the mixing efficiency is greatly improved, the flocculation effect is improved, the flocculation of the waste nitric acid wastewater is quickened, and the waste nitric acid wastewater is purified.

The flocculated wastewater flows into the sedimentation tank 17, is sedimented at the bottom of the sedimentation tank 17, then the third motor 601 drives the main shaft 603 to rotate, the main shaft 603 rotates to drive the scraper 604 at the bottom to rotate, the sediment is gathered towards the sewage outlet 12 under the rotation action of the scraper 604, the main shaft 603 rotates to drive the crushing mechanism 7 to rotate, the large-particle sediment is cut under the action of the crushing mechanism 7, the large-particle sediment is cut into small particles, the small-particle sediment enters the sewage outlet 12, the sediment is quickly conveyed into the sewage outlet 10 under the action of the two mud conveying wheels 904 arranged in the sewage outlet 12, the sediment conveyed into the sewage outlet 10 is crushed and conveyed under the rotation action of the hinge 9010 and the crushing wheel 909 on the rotating shaft 907, and the purpose of quickly discharging the sediment is achieved, and the sewage discharging efficiency is improved.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (10)

1. A sedimentation tank for waste nitric acid wastewater treatment is characterized in that: including cell body (1), diaphragm (2), mixing mechanism (3), dosing mechanism (4), circulation helps congeal mechanism (5), mud scraping mechanism (6), crushing mechanism (7), square groove (8), prevent blockking up mechanism (9), blow off pipe (10), control valve (11), drain (12), first baffle (13), second baffle (14), coagulation tank (15), flocculation tank (16), sedimentation tank (17), fixed plate (18), barrel (19), first baffle (20), second baffle (21), basin (22), pond (23), water inlet (24), delivery port (25), the upper end fixedly connected with diaphragm (2) of cell body (1), fixed mounting has mixing mechanism (3), circulation helps congeal mechanism (5) and mud scraping mechanism (6) on diaphragm (2), the inside of cell body (1) is separated into coagulation tank (15) through first baffle (13) and second baffle (14), flocculation tank (16) and sedimentation tank (17), mud scraping mechanism (6) set up just above mud scraping mechanism (7) under mud scraping mechanism (7), a square groove (8) is arranged at the bottom end of the tank body (1),

the anti-blocking mechanism (9) is fixedly installed in the square groove (8), the anti-blocking mechanism (9) comprises a motor (901), a transmission shaft (902), a first belt wheel (903), a mud conveying wheel (904), a transmission belt (905), a second belt wheel (906), a rotating shaft (907), a second sealing ring (908), a crushing wheel (909) and a twisting blade (9010), the motor (901) is fixedly installed in the square groove (8), the output end of the motor (901) is fixedly connected with the transmission shaft (902), and two mud conveying wheels (904) and one first belt wheel (903) are fixedly connected to the transmission shaft (902).

2. The sedimentation tank for waste nitric acid wastewater treatment according to claim 1, wherein: two fortune mud wheel (904) all set up in drain (12), first band pulley (903) are connected with second band pulley (906) belt drive through drive belt (905), one end fixed connection of second band pulley (906) and pivot (907), pivot (907) set up in the bottom of drain (12), pivot (907) pass drain (10) and rotate and install in drain (10), be provided with seal receptacle (101) on drain (10), pivot (907) are through second sealing washer (908) and seal receptacle (101) sealing connection, fixedly connected with broken wheel (909) and hank leaf (9010) on pivot (907), broken wheel (909) and hank leaf (9010) all set up the inside at drain (10).

3. The sedimentation tank for waste nitric acid wastewater treatment according to claim 1, wherein: the crushing mechanism (7) comprises a connecting shaft (701), a first connecting rod (702), first prismatic blades (703), second connecting rods (704) and second prismatic blades (705), wherein the connecting shaft (701) is fixedly connected with the bottom end of the mud scraping mechanism (6), eight first connecting rods (702) are annularly distributed on the side face of the connecting shaft (701), the first prismatic blades (703) are fixedly installed on the first connecting rods (702), eight second connecting rods (704) are arranged below the first connecting rods (702), and the second prismatic blades (705) are fixedly installed on the second connecting rods (704).

4. The sedimentation tank for waste nitric acid wastewater treatment according to claim 1, wherein: the mixing mechanism (3) comprises a first motor (301), a first coupler (302), a stirring rod (303), a large gear (304) and stirring blades (305), wherein the output end of the first motor (301) is in transmission connection with the stirring rod (303) through the first coupler (302), the first coupler (302) is fixedly arranged at the upper end of the transverse plate (2), and the large gear (304) and the stirring blades (305) are fixedly connected to the stirring rod (303).

5. The sedimentation tank for waste nitric acid wastewater treatment according to claim 4, wherein: the medicine adding mechanism (4) comprises a pipeline (401) and a spraying mechanism (402), the pipeline (401) is communicated with the two spraying mechanisms (402), the spraying mechanism (402) comprises a fixing seat (4021), a medicine inlet hole (4022), a rotating body (4023), a connecting pipe (4024), a rolling body (4025), a first sealing ring (4026), a pinion (4027) and a spraying head (4028), a medicine inlet hole (4022) is formed in the side face of the fixing seat (4021), the medicine inlet hole (4022) is communicated with the pipeline (401), a circular rail is formed in the fixing seat (4021), a plurality of rolling bodies (4025) are arranged in the circular rail, the rolling bodies (4025) are movably connected with the circular rail formed in the connecting pipe (4024), the connecting pipe (4024) is rotatably connected to the inner portion of the fixing seat (4021), and the first sealing ring (4026) is mounted on the surface of the rolling body (4025) and is matched with an inner cavity groove of the fixing seat (4021).

6. The sedimentation tank for waste nitric acid wastewater treatment according to claim 5, wherein: the connecting pipe (4024) is fixedly connected to the rotating body (4023), a pinion (4027) is fixedly connected to the outer side of the rotating body (4023), the pinion (4027) is connected with the large gear (304) in a meshed mode, a spray head (4028) is arranged at the lower end of the rotating body (4023), and a plurality of inclined spray heads are arranged on the spray head (4028).

7. The sedimentation tank for waste nitric acid wastewater treatment according to claim 1, wherein: the circulating coagulation assisting mechanism (5) comprises a second motor (501), a second coupler (502), a rotating rod (503), a first meshing gear (504), a large impeller (505), a transmission rod (506), a second meshing gear (507), a small impeller (508) and bearings (509), an output shaft of the second motor (501) is in transmission connection with the rotating rod (503) through the second coupler (502), the second coupler (502) is fixedly arranged at the upper end of a transverse plate (2), the rotating rod (503) is fixedly connected with the first meshing gear (504) and the large impeller (505), the first meshing gear (504) is respectively in meshing connection with the four second meshing gears (507), the four second meshing gears (507) are respectively in fixed connection with the four transmission rods (506), the upper ends of the transmission rods (506) are fixedly arranged in the four bearings (509), the outer rings of the four bearings (509) are fixedly arranged at the lower end of the second coupler (502), and the lower ends of the four transmission rods (508) are fixedly connected with the small impeller (506).

8. The sedimentation tank for waste nitric acid wastewater treatment according to claim 1, wherein: the mud scraping mechanism (6) comprises a third motor (601), a third coupler (602), a main shaft (603) and a mud scraping plate (604), an output shaft of the third motor (601) is in transmission connection with the main shaft (603) through the third coupler (602), the third coupler (602) is fixedly arranged at the upper end of the transverse plate (2), the mud scraping plate (604) is fixedly connected to the main shaft (603), the lower end of the mud scraping plate (604) is in contact with the bottom end inside the sedimentation tank (17), and the lower end of the main shaft (603) is fixedly connected with the crushing mechanism (7).

9. The sedimentation tank for waste nitric acid wastewater treatment according to claim 1, wherein: the utility model discloses a flocculation basin (16) with medicine adding pipe, including sedimentation tank (17), drain (12), control valve (11), flocculation basin (16) and medicine adding pipe (26), drain (12) set up in sedimentation tank (17) inside bottom, the bottom of drain (12) is connected with drain (10), the one end of drain (10) is connected with control valve (11), the inside upper end of sedimentation tank (17) is equipped with two basin (22), two drain (12) all are linked together with pond (23), the right side of pond (23) is equipped with delivery port (25), the left side of coagulation basin (15) is equipped with water inlet (24), the center department symmetry fixedly connected with two fixed plates (18) of flocculation basin (16), fixed mounting has barrel (19) between two fixed plates (18), the lower extreme setting of circulation helps congeal mechanism (5) is in the inside of barrel (19), the inside right side of flocculation basin (16) is equipped with first baffle (20), the inside left side of sedimentation tank (17) is equipped with second baffle (21), flocculation basin (16) top is equipped with medicine adding pipe (26).

10. A precipitation method using a sedimentation tank for waste nitric acid wastewater treatment according to any one of claims 1 to 9, characterized by comprising the steps of:

s1: firstly, adding nitric acid wastewater into a coagulation tank (15) through a water inlet (24), driving a large gear (304) and stirring blades (305) to rotate by a first motor (301) through a stirring rod (303), simultaneously carrying a rotating body (4023) of two spraying mechanisms (402) to rotate by the rotation of the large gear (304), simultaneously conveying coagulant into the two spraying mechanisms (402) through a pipeline (401), mixing and stirring the added nitric acid wastewater under the action of the stirring blades (305), and simultaneously adding the coagulant into the stirring tank to achieve a better coagulation effect through the rotation of the two spraying mechanisms (402), so as to coagulate the nitric acid wastewater and accelerate the flocculation of the nitric acid wastewater;

s2: the flocculated nitric acid wastewater enters a flocculation tank (16) and a coagulant aid is added into the nitric acid wastewater in the flocculation tank (16) through a dosing pipe (26), a second motor (501) drives a first meshing gear (504) and a large impeller (505) to rotate under the action of rotating a rotating rod (503), the first meshing gear (504) can simultaneously rotate with a plurality of second meshing gears (507), and the first meshing gear (504) simultaneously rotates with a small impeller (508) at the lower end, so that the coagulated nitric acid wastewater is sucked from the upper part of a cylinder (19) and discharged from the lower part, the nitric acid wastewater can form circular flow, the nitric acid wastewater can be rapidly mixed with the coagulant aid to accelerate flocculation into larger sediment, and the nitric acid wastewater is purified;

s3: the nitric acid waste water after flocculation is completed flows into a sedimentation tank (17), sedimentation is carried out at the bottom of the sedimentation tank (17), and when sedimentation is carried out, a third motor (601) drives a main shaft (603) to rotate, a mud scraping plate (604) and a crushing mechanism (7) are enabled to rotate, the mud scraping plate (604) scrapes sediment to a sewage outlet (12), meanwhile, the crushing mechanism (7) can cut and crush the sediment with large particles, then the sediment is discharged through the sewage outlet (12), and purified upper clean water flows into a water tank (23) through a water tank (22) and is discharged through a water outlet (25).