CN215886485U

CN215886485U - Nickel surface treatment effluent disposal system

Info

Publication number: CN215886485U
Application number: CN202122153759.1U
Authority: CN
Inventors: 邓金虎
Original assignee: Suzhou Plater Electronic Co ltd
Current assignee: Suzhou Plater Electronic Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-02-22
Anticipated expiration: 2031-09-07

Abstract

The utility model discloses a nickel surface treatment wastewater treatment system, which comprises a sedimentation tank, wherein two sides of the top end of the sedimentation tank are respectively provided with a first chute, a first slide block is connected in each first chute in a sliding manner, the two first slide blocks are respectively arranged on two sides of the bottom end of a first slide plate in a sliding manner, two sides of the top end of the first slide plate are respectively fixedly provided with a support block, one side of one support block is fixedly provided with a first support rod, and two sides of the first support rod are respectively fixedly provided with a plurality of stirring rods. The collateral breaking agent can be conveniently and uniformly and fully reacted with the wastewater.

Description

Nickel surface treatment effluent disposal system

Technical Field

The utility model relates to wastewater treatment, in particular to a nickel surface treatment wastewater treatment system.

Background

The electroplating is to deposit a required coating on the surface of a product by an electrochemical method, so as to realize the protection and modification of the metal or nonmetal surface, obtain new performance of the product and the like. In recent years, the electroplating industry in China develops rapidly, nickel plating is used as a main mode for metal surface modification, a large amount of nickel-containing wastewater is generated in the process, according to incomplete statistics, 40 hundred million m3 of electroplating wastewater is discharged every year, 50% of the electroplating wastewater does not reach the discharge standard, pollutants in the electroplating wastewater are difficult to biodegrade and easy to accumulate in organisms, and the pollutants discharged into the environment can cause serious threats to environmental mankind.

In the prior art, when nickel-containing wastewater is treated, a plurality of treatment processes are needed, clean wastewater can be discharged after the treatment is completed, and the following defects mainly exist in the wastewater treatment:

1. when nickel-containing wastewater is treated, a complex breaking agent needs to be added into the wastewater for sedimentation, and when the complex breaking agent is added, the complex breaking agent is mostly directly added into the wastewater, and most of the complex breaking agent is concentrated in one area, so that the complex breaking agent in other areas is less, the wastewater is not subjected to sufficient reaction sedimentation, and the sedimentation effect of the wastewater is reduced;

2. when the mud after subsiding is cleared up, because mud is in the muddy state of humidity, when clearing up, cause the clearance unclean easily like this, can residual partial mud in making the subside pond, cause the mud to the environment easily, reduced the clearance effect of mud.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a nickel surface treatment wastewater treatment system to solve the problems of insufficient sedimentation reaction and residual sludge in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a nickel surface treatment wastewater treatment system comprises a sedimentation tank, wherein first sliding chutes are respectively formed in two sides of the top end of the sedimentation tank, first sliding blocks are respectively connected in the two first sliding chutes in a sliding manner, the two first sliding blocks are respectively arranged on two sides of the bottom end of a first sliding plate in a sliding manner, supporting blocks are respectively fixedly arranged on two sides of the top end of the first sliding plate, one side of one of the supporting blocks is fixedly provided with a first supporting rod, both sides of the first supporting rod are fixedly provided with a plurality of stirring rods, the outer wall of the first supporting rod is rotatably connected with a rotary drum, the outer wall of the rotary drum is provided with a plurality of liquid outlets, a second supporting rod is fixedly arranged on one side of the rotary drum and is rotatably arranged on one side of the other supporting block, the bottom end of the first sliding plate is rotatably connected with a plurality of stirring shafts, and a plurality of stirring blades are symmetrically and fixedly arranged on two sides of each stirring shaft;

the middle parts of two sides of the inner wall of the sedimentation tank are respectively provided with a second sliding groove, the two second sliding grooves are internally and respectively connected with a second sliding block in a sliding way, the two second sliding blocks are respectively and fixedly arranged at two sides of a second sliding plate, the bottom end of the second sliding plate is provided with a through groove, a first air bag is fixedly arranged in the through groove, the bottom end of the first air bag is fixedly provided with a scraper plate, the scraper plate is in alternate connection with the through groove, the bottom ends of the two second sliding blocks are respectively and fixedly provided with a pressing plate, the bottom ends of the two pressing plates are respectively attached with a second air bag, the two second air bags are respectively and fixedly arranged in two grooves, the two grooves are respectively arranged at the bottom ends of the inner wall of the two second sliding grooves, the two second air bags are respectively and fixedly communicated with an exhaust pipe through a connecting pipe, one side of the two exhaust pipes is respectively and fixedly communicated with a plurality of spray heads which are respectively and fixedly arranged at two sides of the inner wall of the sedimentation tank, and friction strips are arranged on one sides of the two second sliding blocks and are respectively fixedly arranged on one sides of the inner walls of the two second sliding grooves.

As a preferable technical scheme of the utility model, a first rack is fixedly arranged at the top of one side of the inner wall of the sedimentation tank, the first rack is connected with a first gear in a meshing manner, and the first gear is rotatably arranged at one side of the bottom end of the first sliding plate through a first rotating shaft.

As a preferred technical scheme of the present invention, a first sprocket is fixedly sleeved on an outer wall of the first rotating shaft, the first sprocket is connected with a plurality of second sprockets through chain transmission, and the plurality of second sprockets are respectively and fixedly sleeved on outer walls of the plurality of stirring shafts.

As a preferable technical scheme of the utility model, a second rack is fixedly arranged at the top of the other side of the inner wall of the sedimentation tank, the second rack is in meshed connection with a second gear, and the second gear is rotatably arranged at the other side of the bottom end of the first sliding plate through a second rotating shaft.

As a preferred technical solution of the present invention, a first bevel gear is fixedly disposed at the top end of the second rotating shaft, the first bevel gear is in meshing connection with a second bevel gear, and the second bevel gear is fixedly disposed at one end of the second supporting rod.

As a preferred technical scheme of the utility model, auxiliary rods are fixedly arranged on one sides of the two supporting blocks, auxiliary blocks are fixedly arranged at one ends of the two auxiliary rods, the two auxiliary blocks are respectively arranged in the two annular grooves in a sliding manner, and the two annular grooves are respectively arranged on two sides of the rotary drum.

As a preferable technical scheme of the utility model, fixing rods are fixedly arranged on one side of the first sliding plate and one side of the second sliding plate, the two fixing rods are respectively connected with a fixing groove in a clamping manner, and the two fixing grooves are respectively arranged on one side of the inner wall of the sedimentation tank.

According to a preferable technical scheme of the utility model, two sides of the scraper are respectively hinged with a side plate, one end of each of the two side plates is fixedly provided with the scraper, one side of each of the two side plates is fixedly provided with a spring, and one end of each of the two springs is respectively fixedly arranged at two ends of one side of the scraper.

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

1. according to the utility model, through the arrangement of the rotary drum and the stirring shaft, in the movement process of the first sliding plate, the meshing action of the second rack and the second gear is matched with the transmission action of the first bevel gear and the second bevel gear, namely, the rotary drum is driven to rotate, the decomplexer in the rotary drum is uniformly sprayed into the sedimentation tank through the liquid outlet, so that the decomplexer is uniformly distributed in the wastewater in the sedimentation tank, the decomplexer is conveniently and uniformly and fully reacted with the wastewater, and meanwhile, the meshing action of the first rack and the first gear is matched with the transmission action of the first chain wheel, the chain and the second chain wheel, namely, the stirring shaft and the stirring blades are driven to rotate, so that the decomplexer and the wastewater are fully mixed and stirred, the decomplexer is fully reacted, the wastewater is conveniently and fully settled, and the settlement effect of the wastewater is improved.

2. Through the arrangement of the second sliding block, the friction strip, the first air bag and the second air bag, in the process of the movement of the second sliding plate, the second sliding block is driven to be in frictional contact with the friction strip, the heat generated by friction is transferred to the position of the second air bag, the gas in the second air bag is heated, then the hot gas in the second air bag is sprayed out through the spray head under the extrusion action of the pressure plate on the second air bag, drying the sludge in the sedimentation tank, then transferring heat to the first air bag in the process of continuously rubbing the second sliding block and the rubbing strip, wherein the first air bag is thermally expanded, under the action of expansion, the scraper is driven to move downwards and is inserted into the sludge, and in the process that the first air bag gradually expands, the depth of the scraper inserted into the sludge is deeper and deeper, thereby being convenient for fully scrape and clear up the mud in the sedimentation tank, having improved the clearance effect of mud.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic plan view of the present invention;

FIG. 4 is a schematic view of the drum of the present invention in a planar configuration;

FIG. 5 is a schematic plan view of a second slider according to the present invention;

FIG. 6 is a schematic view of the scraper structure of the present invention.

In the figure: 1. a sedimentation tank; 2. a first slider; 3. a first slide plate; 4. a support block; 5. a first support bar; 6. a stirring rod; 7. a rotating drum; 8. a second support bar; 9. a stirring shaft; 10. a second slider; 11. a second slide plate; 12. a first air bag; 13. a squeegee; 14. pressing a plate; 15. a second air bag; 16. a spray head; 17. rubbing the strips; 18. a first rack; 19. a first gear; 20. a first sprocket; 21. a second sprocket; 22. a second rack; 23. a second gear; 24. a first bevel gear; 25. a second bevel gear; 26. an auxiliary lever; 27. an auxiliary block; 28. fixing the rod; 29. a side plate; 30. a scraper; 31. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution of a nickel surface treatment wastewater treatment system:

the first embodiment is as follows:

according to the drawings of fig. 1, fig. 3 and fig. 4, the device comprises a sedimentation tank 1, wherein first sliding grooves are respectively formed in two sides of the top end of the sedimentation tank 1, first sliding blocks 2 are respectively connected in the two first sliding grooves in a sliding manner, the two first sliding blocks 2 are respectively arranged on two sides of the bottom end of a first sliding plate 3 in a sliding manner, supporting blocks 4 are respectively fixedly arranged on two sides of the top end of the first sliding plate 3, a first supporting rod 5 is fixedly arranged on one side of one supporting block 4, a plurality of stirring rods 6 are respectively fixedly arranged on two sides of the first supporting rod 5, the crushing agents are mixed and stirred by the stirring rods 6, a rotary drum 7 is rotatably connected to the outer wall of the first supporting rod 5, a liquid inlet is formed in one side of the rotary drum 7, a plurality of liquid outlets are formed in the outer wall of the rotary drum 7, when the first sliding plate 3 moves, the crushing agents are driven to rotate by using a second rack 22, a second gear 23, a first bevel gear 24 and a second bevel gear 25, so that the crushing agents are uniformly sprayed into wastewater in the sedimentation tank 1, then, through the use of a first rack 18, a first gear 19, a first chain wheel 20, a chain and a second chain wheel 21, the rotation of a stirring shaft 9 is driven, the mixing and stirring are carried out on the decomplexing agent and the wastewater, the decomplexing agent is fully mixed, the sedimentation effect of the wastewater is improved, a second support rod 8 is fixedly arranged on one side of the rotary drum 7, the second support rod 8 is rotatably arranged on one side of the other support block 4, the bottom end of the first sliding plate 3 is rotatably connected with a plurality of stirring shafts 9, a plurality of stirring blades are symmetrically and fixedly arranged on both sides of the plurality of stirring shafts 9, a first rack 18 is fixedly arranged on the top of one side of the inner wall of the sedimentation tank 1, the first rack 18 is in meshing connection with the first gear 19, the first gear 19 is rotatably arranged on one side of the bottom end of the first sliding plate 3 through a first rotating shaft, the first chain wheel 20 is fixedly sleeved on the outer wall of the first rotating shaft, the first chain wheel 20 is connected with a plurality of second chain wheels 21 through chain transmission, the second chain wheels 21 are fixedly sleeved on the outer walls of the stirring shafts 9 respectively, a second rack 22 is fixedly arranged at the top of the other side of the inner wall of the sedimentation tank 1, the second rack 22 is connected with a second gear 23 in a meshing manner, the second gear 23 is rotatably arranged at the other side of the bottom end of the first sliding plate 3 through a second rotating shaft, a first bevel gear 24 is fixedly arranged at the top end of the second rotating shaft, a second bevel gear 25 is connected with the first bevel gear 24 in a meshing manner, the second bevel gear 25 is fixedly arranged at one end of the second supporting rod 8, auxiliary rods 26 are fixedly arranged at one sides of the two supporting blocks 4, auxiliary blocks 27 are fixedly arranged at one ends of the two auxiliary rods 26, the auxiliary rods 26 and the auxiliary blocks 27 are used for supporting the rotating drum 7 when rotating, the two auxiliary blocks 27 are slidably arranged in the two annular grooves respectively, the two annular grooves are respectively arranged at the two sides of the rotating drum 7, and fixed rods 28 are fixedly arranged at one side of the first sliding plate 3 and one side of the second sliding plate 11, the use of dead lever 28 and fixed slot is fixed first slide 3 and second slide 11 respectively, and two equal blocks of dead lever 28 are connected with the fixed slot, and one side at sedimentation tank 1 inner wall is all seted up to two fixed slots.

Example two:

on the basis of the first embodiment, as shown in fig. 2, 5 and 6, the middle parts of two sides of the inner wall of the sedimentation tank 1 are respectively provided with a second sliding chute, the two second sliding chutes are respectively connected with a second sliding block 10 in a sliding manner, the two second sliding blocks 10 are respectively fixedly arranged on two sides of a second sliding plate 11, the bottom end of the second sliding plate 11 is provided with a through groove, a first air bag 12 is fixedly arranged in the through groove, the bottom end of the first air bag 12 is fixedly provided with a scraper 13, the scraper 13 is connected with the through groove in a penetrating manner, the bottom ends of the two second sliding blocks 10 are respectively fixedly provided with a pressing plate 14, the bottom ends of the two pressing plates 14 are respectively attached with a second air bag 15, during the movement of the second sliding blocks 10, the air in the second air bag 15 is heated through the friction action of the second sliding blocks 10 and a friction strip 17, and at the same time, under the extrusion action of the pressing plate 14 on the second air bag 15, the hot air in the second air bag 15 is sprayed out through a spray head 16, carry out drying process to the mud in the sedimentation tank 1, at the friction of second slider 10 and friction strip 17 simultaneously, heat first gasbag 12, first gasbag 12 is heated the thermal expansion and drives scraper blade 13 downstream, and in the expanded in-process gradually of first gasbag 12, the degree of depth that scraper blade 13 inserted mud is more and more dark, thereby conveniently fully scrape and clear up mud, the clearance effect of mud has been improved, discharge mud through the mud mouth of seting up on one side of sedimentation tank 1 again at last, two second gasbags 15 are fixed respectively to be set up in two recesses, second gasbag 15 is trapezoidal form, two recesses are seted up respectively in the bottom of two second spout inner walls, two second gasbags 15 all have the blast pipe through the fixed intercommunication of connecting pipe, one side of two blast pipes all is fixed to be communicated with a plurality of shower nozzles 16, shower nozzle 16 inclines to set up downwards, and inclination is 45 degrees, a plurality of shower nozzles 16 are the fixed both sides that set up at 1 inner wall of sedimentation tank respectively, one side of two second sliders 10 all is equipped with the friction strip 17, two friction strips 17 are the fixed one side that sets up at two second spout inner walls respectively, the both sides of scraper blade 13 are all articulated to be equipped with curb plate 29, the one end of two curb plates 29 is all fixed and is equipped with scraper 30, through curb plate 29, scraper 30 and spring 31's use, clear up the inside wall of sedimentation tank 1, one side of two curb plates 29 is all fixed and is equipped with spring 31, the one end of two springs 31 is fixed the both ends that set up at one avris of scraper blade 13 respectively.

Example three:

on the basis of the first embodiment and the second embodiment, as shown in the figures 1 to 6, the rotary drum 7 and the stirring shaft 9 rotate synchronously, so that the purpose that the decomplexing agent is uniformly sprayed is achieved, mixing and stirring the decomplexer and the wastewater to uniformly mix the decomplexer and the wastewater, then standing the mixture in a sedimentation tank 1 for sedimentation and standing, in the process of moving the second slide block 10, hot steam is introduced into the sedimentation tank 1 through the friction contact with the friction strip 17 and then through the action of the pressure plate 14, the second air bag 15, the exhaust pipe and the spray head 16, drying the sludge settled in the sedimentation tank 1, expanding the first air bag 12 to drive the scraper 13 to move downwards in the process of continuously rubbing the second slide block 10 and the rubbing strip 17, the sludge in the sedimentation tank 1 is wiped and cleaned, and the depth of the scraper 13 inserted into the sludge is deeper and deeper along with the expansion of the first air bag 12.

When in specific use, the nickel surface treatment wastewater treatment system firstly leads wastewater into a sedimentation tank 1, then adds a decomplexing agent into a rotary drum 7, drives a second rack 22 to be meshed with a second gear 23 in the movement process of a first sliding plate 3, namely drives a first bevel gear 24 to move, drives a second bevel gear 25 to rotate, namely drives the rotary drum 7 to rotate, uniformly sprays the decomplexing agent into the sedimentation tank 1 through a liquid outlet on the rotary drum 7, simultaneously, under the meshing of the first rack 18 and the first gear 19, and then is matched with a first chain wheel 20 and a second chain wheel 21 to use, namely drives a stirring shaft 9 to rotate, and carries out mixing treatment on the decomplexing agent and the wastewater through the stirring shaft 9 and stirring blades, so that the decomplexing agent and the wastewater are uniformly mixed, the sedimentation effect of the wastewater is improved, after the wastewater is completely sedimentated, in the movement process of a second sliding plate 11 after the wastewater is discharged, the second slide block 10 is driven to be in frictional contact with the friction strip 17, heat is transferred to the second air bag 15 under the action of frictional heat, the second air bag 15 is heated, meanwhile, the pressing plate 14 is driven to extrude the second air bag 15 in the process that the second slide block 10 moves, hot air in the second air bag 15 can be sprayed out through the spray head 16 under the action of extrusion force, sludge in the sedimentation tank 1 is dried, meanwhile, in the process that the second slide block 11 and the second slide block 10 continue to move, more and more heat is generated by friction between the second slide block 10 and the friction strip 17, after the heat is transferred to the first air bag 12, the first air bag 12 is heated to expand, under the action of expansion force, the scraping plate 13 is driven to move downwards, the scraping plate 13 is inserted into the sludge, and when the first air bag 12 continues to expand, the depth of the scraping plate 13 inserted into the sludge is deeper and deeper, then in the process that the second slide block 11 moves, the scraper 13 is driven to clean the sludge in the sedimentation tank 1, and the side plates 29 and the scraper 30 are driven to clean the inner side wall of the sedimentation tank 1 in the movement process of the scraper 13, so that the sludge cleaning effect is improved.

In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a nickel surface treatment effluent disposal system, includes sedimentation tank (1), its characterized in that: the sedimentation tank is characterized in that first sliding chutes are respectively formed in two sides of the top end of the sedimentation tank (1), first sliding blocks (2) are respectively connected in the two first sliding chutes in a sliding manner, the two first sliding blocks (2) are respectively arranged on two sides of the bottom end of a first sliding plate (3) in a sliding manner, supporting blocks (4) are respectively fixedly arranged on two sides of the top end of the first sliding plate (3), a first supporting rod (5) is fixedly arranged on one side of one of the supporting blocks (4), a plurality of stirring rods (6) are respectively fixedly arranged on two sides of the first supporting rod (5), a rotary drum (7) is rotatably connected to the outer wall of the first supporting rod (5), a plurality of liquid outlets are formed in the outer wall of the rotary drum (7), a second supporting rod (8) is fixedly arranged on one side of the rotary drum (7), the second supporting rod (8) is rotatably arranged on one side of the other supporting block (4), and a plurality of stirring shafts (9) are rotatably connected to the bottom end of the first sliding plate (3), a plurality of stirring blades are symmetrically and fixedly arranged on both sides of the stirring shafts (9);

the middle parts of two sides of the inner wall of the sedimentation tank (1) are respectively provided with a second sliding chute, a second sliding block (10) is respectively connected in the two second sliding chutes in a sliding manner, the two second sliding blocks (10) are respectively fixedly arranged on two sides of a second sliding plate (11), the bottom end of the second sliding plate (11) is provided with a through groove, a first air bag (12) is fixedly arranged in the through groove, the bottom end of the first air bag (12) is fixedly provided with a scraper (13), the scraper (13) is connected with the through groove in an inserting manner, the bottom ends of the two second sliding blocks (10) are respectively fixedly provided with a pressing plate (14), the bottom ends of the two pressing plates (14) are respectively attached with a second air bag (15), the two second air bags (15) are respectively fixedly arranged in the two grooves, the two grooves are respectively arranged at the bottom ends of the inner wall of the two second sliding chutes, and the two second air bags (15) are respectively fixedly communicated with an exhaust pipe through connecting pipes, two one side of blast pipe is all fixed the intercommunication has a plurality of shower nozzles (16), and is a plurality of shower nozzle (16) are fixed the both sides that set up at sedimentation tank (1) inner wall respectively, two one side of second slider (10) all is equipped with friction strip (17), two friction strip (17) are fixed the setting in one side of two second spout inner walls respectively.

2. The nickel surface treatment wastewater treatment system according to claim 1, wherein: the top of sedimentation tank (1) inner wall one side is fixed and is equipped with first rack (18), first rack (18) meshing is connected with first gear (19), first gear (19) rotate through first pivot and set up the one side in first slide (3) bottom.

3. The nickel surface treatment wastewater treatment system according to claim 2, characterized in that: the outer wall of first pivot is fixed to be equipped with first sprocket (20) by the cover, first sprocket (20) are connected with a plurality of second sprockets (21), and are a plurality of through chain drive second sprocket (21) are fixed the cover respectively and are established the outer wall at a plurality of (mixing) shafts (9).

4. The nickel surface treatment wastewater treatment system according to claim 2, characterized in that: the top of sedimentation tank (1) inner wall opposite side is fixed and is equipped with second rack (22), second rack (22) meshing is connected with second gear (23), second gear (23) rotate the opposite side that sets up in first slide (3) bottom through the second pivot.

5. The nickel surface treatment wastewater treatment system according to claim 4, wherein: the top end of the second rotating shaft is fixedly provided with a first bevel gear (24), the first bevel gear (24) is connected with a second bevel gear (25) in a meshing manner, and the second bevel gear (25) is fixedly arranged at one end of the second supporting rod (8).

6. The nickel surface treatment wastewater treatment system according to claim 1, wherein: two one side of supporting shoe (4) all is fixed and is equipped with auxiliary rod (26), two the one end of auxiliary rod (26) all is fixed and is equipped with auxiliary block (27), two auxiliary block (27) slide respectively and set up in two annular grooves, two the both sides at rotary drum (7) are seted up respectively to the annular groove.

7. The nickel surface treatment wastewater treatment system according to claim 1, wherein: one side of first slide (3) and one side of second slide (11) are all fixed and are equipped with dead lever (28), two the equal block of dead lever (28) is connected with the fixed slot, two the avris at sedimentation tank (1) inner wall is all seted up to the fixed slot.

8. The nickel surface treatment wastewater treatment system according to claim 1, wherein: the both sides of scraper blade (13) are all articulated to be equipped with curb plate (29), two the one end of curb plate (29) is all fixed scraper (30) of being equipped with, two one side of curb plate (29) is all fixed spring (31) of being equipped with, two the one end of spring (31) is fixed the both ends that set up in scraper blade (13) avris respectively.