Device for combined treatment of chemical nickel waste liquid

Abstract

The utility model provides a combined nickel plating waste liquid treatment device, and belongs to the technical field of nickel plating waste liquid treatment. Comprising an electrolytic bath, a waste gas tower, a collecting tank, an adjusting tank, a sequencing batch reaction tank I, a plate-and-frame filter press and a sequencing batch reaction tank II, the electrolytic bath is communicated with the waste gas tower through a pipeline, the waste gas tower is communicated with the collecting tank through a pipeline, and the collecting tank is respectively communicated with the sequencing batch reaction tank I and the sequencing batch reaction tank II through pipelines. According to the device disclosed by the utility model, through the arrangement of the spiral conveyor and the driving lever, medicine powder enters the spiral conveyor through the storage tank and then is scattered into the sequencing batch reaction tank I from the blanking hole and the strip-shaped groove, and the stirring shaft drives the stirrer to slowly stir wastewater in the sequencing batch reaction tank I; in the process that the stirring shaft drives the driving lever to rotate, the driving lever drives the spiral conveyor to rotate, so that the dispersion area of the medicine powder is further increased, the medicine powder can be sufficiently dissolved in the wastewater, the stirring time for mixing the wastewater and the medicine powder is shortened, and the reaction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nickel-plated waste liquid treatment, in particular to a device for combined treatment of nickel-plated waste liquid. Background Art

[0002] Sodium hypochlorite solution is required for treating waste liquid generated by chemical nickel plating. Sodium hypochlorite solution can be extracted using acidic etching liquid generated in the workshop. The acidic etching liquid is pumped into the electrolytic cell for electrolytic copper extraction. Chlorine generated by the electrolytic etching liquid enters the waste gas tower through the waste gas collection pipe, and liquid alkali is added to the waste gas tower to react with chlorine. Sodium hypochlorite solution is generated after the reaction of chlorine and alkali, and is regularly collected into a sodium hypochlorite storage tank. The nickel chloride waste liquid generated in the chemical nickel plating production line is collected and stirred in the nickel chloride waste liquid regulating tank through a sewage pipe. After the pollutants are evenly mixed, it is pumped to the sequencing batch reaction tank one through a lifting pump. Sodium hypochlorite is quantitatively transported into the sequencing batch reaction tank one for reaction and stirred for a period of time to fully react with the waste water. After the sodium hypochlorite has fully reacted, a certain amount of composite alkali is added to cause the nickel ions in the nickel chloride waste water to form nickel hydroxide precipitate, and then a certain amount of calcium chloride is added to cause the orthophosphorus in the nickel chloride waste water to combine with the calcium chloride to form a precipitate. After precipitation, a certain amount of polyacrylamide and polyaluminum chloride are added and stirred for a period of time to produce flocculation and precipitation. The reaction process of the sequencing batch reaction tank is completed, and the mud-water mixture is pumped to the plate and frame filter press through the sludge pump for dehydration to achieve solid-liquid separation. The dehydrated sludge is collected in ton bags and waits for external transportation. The filtrate is pumped to the sequencing batch reaction tank 2 through the lifting pump, and the above treatment steps are continued in the sequencing batch reaction tank 2 to make the generated precipitate quickly deposited in the sludge. The sludge enters the sludge tank through the sludge discharge system and the sludge discharge pipeline. The treated water in the sequencing batch reaction tank 2 can be discharged.

[0003] After searching, the patent with publication number CN213679878U discloses a dosing device for a sewage treatment reaction tank, comprising a fixed box, with mounting rods fixedly installed on all four sides of the bottom of the fixed box, a servo motor fixedly installed on the left side wall of the inner cavity of the fixed box, the output shaft of the servo motor is connected to a threaded rod, a bearing seat movably connected to the threaded rod is fixedly installed in the middle of the right side wall of the fixed box, and a fixed block is threadedly connected to the outer surface of the threaded rod. The dosing device for the sewage treatment reaction tank is provided with a mounting rod. When erected, the mounting rod is fixed to the head and tail ends of the sewage treatment reaction tank through the mounting holes to complete the erection. When in use, the servo motor is started until the discharge hopper is on the same vertical line as the sewage treatment reaction tank to which dosing is required, and then the solenoid valve is opened. The medicine in the medicine storage box will enter the sewage treatment reaction tank through the connecting pipe and the discharge hopper, and the dosing operation can be completed.

[0004] The above patent uses a medicine storage box to store medicine. When the solenoid valve is opened during medicine addition, the medicine directly enters the reaction tank. When the medicine is added in the above manner, the medicine powder directly enters the reaction tank without being dispersed and comes into contact with the wastewater in the reaction tank. The medicine powder is difficult to fully dissolve in the wastewater, and a long stirring time is required to fully mix the medicine powder and the wastewater. The reaction efficiency needs to be improved. Therefore, the present application provides a combined nickel waste liquid treatment device to meet the needs. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a combined nickel waste liquid treatment device to solve the technical problem that the powder is not dispersed and directly enters the reaction tank, the powder is difficult to fully dissolve in the waste water, a long stirring time is required to fully mix the powder and the waste water, and the reaction efficiency needs to be improved.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A device for jointly treating nickel waste liquid comprises an electrolytic cell, an exhaust gas tower, a collecting tank, a regulating tank, a sequencing batch reaction tank 1, a plate and frame filter press and a sequencing batch reaction tank 2, the electrolytic cell being connected to the exhaust gas tower through a pipeline, the exhaust gas tower being connected to the collecting tank through a pipeline, the collecting tank being connected to the sequencing batch reaction tank 1 and the sequencing batch reaction tank 2 respectively through pipelines, the regulating tank being connected to the sequencing batch reaction tank 1 through a pipeline, the sequencing batch reaction tank being connected to the plate and frame filter press through a pipeline, and the plate and frame filter press being connected to the sequencing batch reaction tank 2 through a pipeline, a stirring motor and two support plates are respectively fixed on the sequencing batch reaction tank 1, a stirring shaft is fixed on the output end of the stirring motor, a stirrer is fixed on the stirring shaft, a lifting assembly and a storage tank are provided on the support plate, the lifting assembly is used for lifting the storage tank, the two storage tanks are used for storing polyacrylamide and polyaluminum chloride respectively, a circular tube is fixed on the bottom of the storage tank, the bottom of the circular tube movably passes through the support plate and is fixed with a screw conveyor, the screw conveyor is connected to the storage tank through the circular tube, and a drop hole and a long strip groove are respectively provided at the bottom of the screw conveyor;

[0008] A shift rod is fixed to the circumferential surface of the stirring shaft, and the end of the shift rod is attached to the side of the screw conveyor. During the rotation of the shift rod, it contacts one of the screw conveyors. A reset component is provided on the side of the storage tank, and the reset component is used to reset the screw conveyor after rotation.

[0009] Preferably, the rotation angle range of the screw conveyor is zero to forty-five degrees.

[0010] Preferably, a thickened plate is fixed to the side of the screw conveyor, and the end of the shifting rod is in contact with the side of the thickened plate.

[0011] Preferably, the end of the shift rod is provided with a curved surface.

[0012] Preferably, the lifting assembly includes two groups of brackets fixed on two support plates respectively, with each group of brackets having two members. A driving member is fixed on the inner wall of the bracket, a connecting block is fixed on the telescopic end of the driving member, a clamping ring is fixed on the side of the connecting block, and a circular ring is fixedly sleeved on the circumferential surface of the storage tank, and the clamping ring is rotatably connected to the surface of the circular ring.

[0013] Preferably, the driving member is a hydraulic cylinder.

[0014] Preferably, the reset assembly includes a cavity opened in the circular ring, a piston is slidably connected in the cavity, a small hole is opened on the piston, the cavity is filled with damping oil, an arc rod and a strong spring are fixed on both sides of the piston, the ends of the strong spring are fixedly connected to the side of the inner wall of the cavity, a notch is opened on the outer wall of the circular ring, the end of the arc rod passes through the circular ring and is fixed with a block, the block is located in the notch, a fixed block is fixed on the inner wall of the retaining ring, and the fixed block and the block fit together.

[0015] Preferably, the center of the arc-shaped rod is located on the central axis of the storage tank.

[0016] Preferably, the two storage tanks are symmetrically arranged with the central vertical plane passing through the sequencing batch reaction tank 1 as the symmetry plane.

[0017] Preferably, the storage tank is covered with a lid, and a handle is fixed on the lid.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] In the above scheme, through the setting of the screw conveyor and the lever, the powder enters the screw conveyor through the storage tank, and then disperses into the sequencing batch reaction tank one from the drop hole and the long groove. In the process of slowly stirring the wastewater in the sequencing batch reaction tank one by the agitator driven by the stirring shaft, the agitator drives the lever to rotate, so that the lever drives the screw conveyor to rotate, thereby further increasing the dispersion area of ​​the powder, helping to fully dissolve the powder in the wastewater, reducing the stirring time of the mixture of wastewater and powder, and thus improving the reaction efficiency.

[0020] By setting the thickened plate, the thickened plate is fixed to the side of the screw conveyor to prevent the screw conveyor from directly contacting the shift rod, thereby preventing the shift rod from wearing the screw conveyor, thereby protecting the screw conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable one skilled in the relevant art to make and use the present disclosure.

[0022] Figure 1 This is a schematic diagram of a three-dimensional structure of a sequential batch reaction tank of the present utility model;

[0023] Figure 2 This is a front cross-sectional view of the storage tank of the present utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the lifting component of the utility model;

[0025] Figure 4 This is a top cross-sectional view of the circular ring of the present invention;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the blanking hole of the utility model;

[0027] Figure 6 This is a schematic structural diagram of the combined nickel waste liquid treatment device of the present invention.

[0028] [Reference Signs]

[0029] 1. Electrolytic cell; 2. Waste gas tower; 3. Collecting tank; 4. Equalizing tank; 5. Sequencing batch reactor 1; 6. Plate and frame filter press; 7. Sequencing batch reactor 2; 8. Lifting assembly; 81. Driving member; 82. Ring; 83. Snap ring; 9. Reset assembly; 91. Piston; 92. Cavity; 93. Arc rod; 94. Block; 95. Fixed block; 96. Strong spring; 10. Storage tank; 11. Round pipe; 12. Screw conveyor; 13. Dropping hole; 14. Long strip trough; 15. Agitator shaft; 16. Push rod; 17. Thickening plate; 18. Support plate.

[0030] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0031] The following describes in detail a combined nickel waste treatment device provided by the present invention, in conjunction with the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative methods for implementing certain known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0032] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0033] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0034] like Figures 1-6 As shown, an embodiment of the present invention provides a combined nickel waste liquid treatment device, including an electrolytic cell 1, an exhaust tower 2, a collecting tank 3, a regulating tank 4, a sequencing batch reaction tank 5, a plate and frame filter press 6 and a sequencing batch reaction tank 2 7. The electrolytic cell 1 is connected to the exhaust tower 2 through a pipeline, the exhaust tower 2 is connected to the collecting tank 3 through a pipeline, the collecting tank 3 is connected to the sequencing batch reaction tank 1 5 and the sequencing batch reaction tank 2 7 through pipelines, the regulating tank 4 is connected to the sequencing batch reaction tank 1 5 through a pipeline, the sequencing batch reaction tank is connected to the plate and frame filter press 6 through a pipeline, the plate and frame filter press 6 is connected to the sequencing batch reaction tank 2 7 through a pipeline, a stirring motor and two support plates 18 are respectively fixed on the sequencing batch reaction tank 1 5, a stirring shaft 15 is fixed to the output end of the stirring motor, an agitator is fixed on the stirring shaft 15, a lifting assembly 8 and a storage tank 10 are provided on the support plate 18, the lifting assembly 8 is used to drive the storage tank 10 to rise and fall, and the two storage tanks 10 are used to respectively Polyacrylamide and polyaluminium chloride are stored. Both polyacrylamide and polyaluminium chloride are in powder form. When the powder in one storage tank 10 is added, the powder in another storage tank 10 is added. A circular tube 11 is fixed to the bottom of the storage tank 10. The bottom of the circular tube 11 movably penetrates the support plate 18 and is fixed with a screw conveyor 12. The screw conveyor 12 consists of a casing, a motor and a screw conveying rod. The casing is fixed to the bottom of the circular tube 11, and the motor is fixed to the end of the casing. The screw conveying rod is rotatably connected in the casing. The motor drives the screw conveying rod to rotate to realize the transportation of the powder. The screw conveyor 12 is connected to the storage tank 10 through the circular tube 11. A blanking hole 13 and a long groove 14 are respectively provided at the bottom of the screw conveyor 12. The blanking hole 13 and the long groove 14 are provided at the bottom of the casing. During the process of the spiral conveying rod conveying the powder, the powder falls from the blanking hole 13 and the long groove 14 to realize the dispersed addition of the powder.

[0035] A lever 16 is fixed to the circumferential surface of the stirring shaft 15, and the end of the lever 16 is attached to the side of the screw conveyor 12. The lever 16 contacts one of the screw conveyors 12 during rotation. A reset component 9 is provided on the side of the storage tank 10. The reset component 9 is used to reset the screw conveyor 12 after rotation. The above structure can also be applied to the sequencing batch reaction tank 2 7 to improve the reaction efficiency of the wastewater in the sequencing batch reaction tank 2 7.

[0036] like Figure 3 As shown, in this embodiment, the rotation angle range of the screw conveyor 12 is zero to forty-five degrees. The screw conveyor 12 disperses the powder during the rotation process, increases the dispersion area of ​​the powder by rotation, helps to fully dissolve the powder in the wastewater, reduces the stirring time of the wastewater and powder, and thus improves the reaction efficiency.

[0037] like Figure 3 As shown, in this embodiment, a thickened plate 17 is fixed to the side of the screw conveyor 12, and the end of the shift rod 16 is in contact with the side of the thickened plate 17. The thickened plate 17 prevents the screw conveyor 12 from directly contacting the shift rod 16, thereby preventing the shift rod 16 from wearing onto the screw conveyor 12, thereby protecting the screw conveyor 12.

[0038] like Figure 3 As shown, in this embodiment, a curved surface is provided at the end of the shifting rod 16 , and the curved surface reduces the contact area between the shifting rod 16 and the thickened plate 17 , thereby reducing the wear of the thickened plate 17 and the shifting rod 16 .

[0039] like Figure 2 As shown, in this embodiment, the lifting assembly 8 includes two groups of brackets respectively fixed on two support plates 18, and the number of brackets in each group is two. A driving member 81 is fixed to the inner wall of the bracket, and a connecting block is fixed to the telescopic end of the driving member 81. A snap ring 83 is fixed to the side of the connecting block. The circumferential surface of the storage tank 10 is fixedly sleeved with a circular ring 82, and the snap ring 83 is rotatably connected to the surface of the circular ring 82. The rotational connection between the driving member 81 and the storage tank 10 is realized by the cooperation of the snap ring 83 and the circular ring 82, thereby preventing the driving member 81 from affecting the rotation of the storage tank 10.

[0040] like Figure 2 As shown, in this embodiment, the driving member 81 is a hydraulic cylinder, which can smoothly drive the storage tank 10 to rise and fall.

[0041] like Figure 4As shown, in this embodiment, the reset assembly 9 includes a cavity 92 opened in the ring 82, a piston 91 is slidably connected in the cavity 92, a small hole is opened on the piston 91, the cavity 92 is filled with damping oil, an arc rod 93 and a strong spring 96 are fixed on both sides of the piston 91, the end of the strong spring 96 is fixedly connected to the side of the inner wall of the cavity 92, the outer wall of the ring 82 is opened with a notch, the end of the arc rod 93 passes through the ring 82 and is fixed with a block 94, the block 94 is located in the notch, and the inner wall of the snap ring 83 is fixed with a fixed The fixed block 95 and the block 94 fit together. When the lever 16 is separated from the thickened plate 17 on the screw conveyor 12, the ring 82 rotates in the opposite direction under the elastic force of the strong spring 96, causing the damping oil to pass through the small hole on the piston 91 and flow in the opposite direction. When the damping oil passes through the small hole on the piston 91 and flows to the side of the piston 91 corresponding to the strong spring 96, the piston 91 provides resistance to the flow of the damping oil to generate damping, so that the ring 82 drives the storage tank 10 and the screw conveyor 12 to rotate slowly in the opposite direction and return to the initial position.

[0042] like Figure 4 As shown, in this embodiment, the center of the arc rod 93 is located on the central axis of the storage tank 10, so as to prevent the arc rod 93 from hindering the rotation of the storage tank 10 and the ring 82 when they rotate.

[0043] like Figure 2 As shown, in this embodiment, the two storage tanks 10 are symmetrically arranged with the central vertical plane passing through the sequencing batch reaction tank 1 5 as the symmetry plane, and the two storage tanks 10 are used to store polyacrylamide and polyaluminum chloride respectively.

[0044] like Figure 2 As shown, in this embodiment, the storage tank 10 is covered with a lid, and a handle is fixed on the lid. The lid forms a closed space for the storage tank 10 to protect the medicine powder. The handle facilitates the removal and placement of the lid, thereby facilitating the opening and closing of the storage tank 10.

[0045] Working principle: Sodium hypochlorite solution is needed to treat the waste liquid generated by chemical nickel plating. Sodium hypochlorite solution can be extracted with acidic etching liquid generated in the workshop. The acidic etching liquid is pumped into the electrolytic cell 1 for electrolytic copper extraction. The chlorine generated by the electrolytic etching liquid enters the waste gas tower 2 through the waste gas collection pipe, and liquid alkali is added to the waste gas tower 2 to react with the chlorine. Sodium hypochlorite solution is generated after the reaction of chlorine and alkali. It is regularly collected and stored in the collection tank 3. The nickel waste liquid generated by the chemical nickel plating production line is collected through the waste gas collection pipe. The water pipeline is sent to the nickel-containing waste liquid regulating tank 4 for collection and stirring. After the pollutants are evenly mixed, they are pumped to the sequencing batch reaction tank 5 through the lifting pump. After the nickel-containing waste liquid enters the sequencing batch reaction tank 5, the sodium hypochlorite metering pump is started to quantitatively transport sodium hypochlorite into the sequencing batch reaction tank 5 for reaction. The sodium hypochlorite is stirred for a period of time to fully react with the waste water, convert hypophosphorus in the waste water into orthophosphorus, and destroy the composite bond between nickel ions and the complexing agent. After the sodium hypochlorite fully reacts, a certain amount of composite alkali is added to adjust the pH of the nickel-containing waste liquid. The value is adjusted to 9.5-11, so that the nickel ions in the nickel-chemical wastewater form nickel hydroxide precipitation, and then a certain amount of calcium chloride is added to combine the orthophosphorus in the nickel-chemical wastewater with calcium chloride to form a precipitate. After the wastewater forms a precipitate, a certain amount of polyacrylamide and polyaluminum chloride is added, and stirred for a period of time to fully react, so that the small particles in the wastewater are flocculated and combined to form large flocs that are precipitated in the wastewater. After flocculation is completed, the reaction process of the sequencing batch reaction tank 1 5 is completed, and the mud-water mixture is pumped to the plate and frame filter press 6 through the sludge pump for dehydration to achieve solid-liquid separation. The dehydrated sludge is collected in tons of bags and waits for external transportation. The filtrate is pumped to the sequencing batch reaction tank 2 7 through the lifting pump, and the above-mentioned treatment steps are continued in the sequencing batch reaction tank 2 7. Sodium hypochlorite, compound alkali and calcium chloride are added to the nickel-chemical wastewater for reaction. After the reaction is completed, polyacrylamide and polyaluminum chloride are added to make the generated precipitate quickly deposited in the sludge. The sludge enters the sludge tank through the sludge discharge system and the sludge discharge pipeline. The treated water in the sequencing batch reaction tank 2 7 can be discharged.

[0046] When adding polyacrylamide and polyaluminium chloride powders to the sequencing batch reaction tank, they need to be added in batches. First, one of the powders is added to one of the storage tanks 10. At the same time, the driving member 81 drives the clamping ring 83 to move downward. The clamping ring 83 drives the storage tank 10 to move downward through the ring 82. The storage tank 10 drives the corresponding screw conveyor 12 downward through the circular tube 11. The powder passes through the storage tank 10 and the circular tube 11 and enters the screw conveyor 12. The screw conveying rod in the screw conveyor 12 rotates to convey the powder. During the conveying process, the powder is dispersed from the drop hole 13 and the long groove 14 to the sequencing batch reaction tank. In the reaction tank 15, the stirring motor on the sequencing batch reaction tank 15 drives the stirring shaft 15 to rotate slowly, and the stirring shaft 15 drives the lever 16 and the stirrer to rotate slowly. The stirrer stirs the wastewater. During the slow rotation of the lever 16, the thickened plate 17 on the screw conveyor 12 is contacted. The end of the lever 16 squeezes the screw conveyor 12, causing the screw conveyor 12 to rotate while driving the storage tank 10 to rotate. The rotation of the screw conveyor 12 during the dosing process can increase the dispersion area of ​​the powder, help the powder to fully dissolve in the wastewater, reduce the stirring time of the wastewater and powder, and thus improve the reaction efficiency.

[0047] When the screw conveyor 12 rotates, it drives the storage tank 10 to rotate, and the storage tank 10 drives the ring 82 to rotate. The fixed block 95 in the notch on the side of the ring 82 does not move, and the fixed block 95 is against the side of the block 94. During the rotation of the ring 82, the strong spring 96 is compressed and the damping oil on one side of the piston 91 flows through the small hole on the piston 91 to the cavity 92 on the other side of the piston 91. When the lever 16 is separated from the thickened plate 17 on the screw conveyor 12, the ring 82 rotates in the opposite direction under the elastic force of the strong spring 96, causing the damping oil to pass through the small hole on the piston 91 and flow in the opposite direction. When the damping oil passes through the small hole on the piston 91 and flows to the side of the piston 91 corresponding to the strong spring 96, the active The plug 91 provides resistance to the flow of the damping oil to generate damping, so that the ring 82 drives the storage tank 10 and the screw conveyor 12 to slowly rotate in the opposite direction and return to the initial position. When the powder in one storage tank 10 is added, the screw conveyor 12 below the storage tank 10 is closed and the storage tank 10 and the screw conveyor 12 are driven upward by the driving member 81. Then, the other storage tank 10 is moved downward under the action of the driving member 81, so that the screw conveyor 12 below the storage tank 10 moves down to the rotation area of ​​the lever 16. Repeat the above steps to disperse and add medicine to the powder in the storage tank 10. After the addition is completed, the storage tank 10 is moved upward to the initial position.

[0048] The present invention encompasses any substitutions, modifications, equivalent methods, and solutions that are not within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail in the preferred embodiments of the present invention above, but those skilled in the art can fully understand the present invention without these detailed descriptions.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A combined nickel waste liquid treatment device, comprising an electrolytic cell (1), an exhaust gas tower (2), a collecting tank (3), a regulating tank (4), a sequencing batch reaction tank (5), a plate-frame filter press (6) and a sequencing batch reaction tank (7), wherein the electrolytic cell (1) is connected to the exhaust gas tower (2) through a pipeline, the exhaust gas tower (2) is connected to the collecting tank (3) through a pipeline, the collecting tank (3) is connected to the sequencing batch reaction tank (5) and the sequencing batch reaction tank (7) through pipelines, the regulating tank (4) is connected to the sequencing batch reaction tank (5) through a pipeline, the sequencing batch reaction tank is connected to the plate-frame filter press (6) through a pipeline, and the plate-frame filter press (6) is connected to the sequencing batch reaction tank (7) through a pipeline, characterized in that: A stirring motor and two support plates (18) are fixed on the sequencing batch reaction tank (5), a stirring shaft (15) is fixed on the output end of the stirring motor, a stirrer is fixed on the stirring shaft (15), a lifting assembly (8) and a storage tank (10) are provided on the support plate (18), the lifting assembly (8) is used to drive the storage tank (10) to rise and fall, the two storage tanks (10) are used to store polyacrylamide and polyaluminum chloride respectively, a circular tube (11) is fixed on the bottom of the storage tank (10), the bottom of the circular tube (11) movably passes through the support plate (18) and is fixed with a screw conveyor (12), the screw conveyor (12) is connected to the storage tank (10) through the circular tube (11), and a drop hole (13) and a long groove (14) are respectively opened at the bottom of the screw conveyor (12); A shifting rod (16) is fixed to the circumferential surface of the stirring shaft (15), and the end of the shifting rod (16) is attached to the side of the screw conveyor (12). The shifting rod (16) contacts one of the screw conveyors (12) during rotation. A reset assembly (9) is provided on the side of the storage tank (10), and the reset assembly (9) is used to reset the screw conveyor (12) after rotation.

2. The combined nickel waste liquid treatment device according to claim 1, characterized in that: The rotation angle range of the screw conveyor (12) is from zero to forty-five degrees.

3. The combined nickel waste liquid treatment device according to claim 1, characterized in that: A thickened plate (17) is fixed to the side of the screw conveyor (12), and the end of the shifting rod (16) is in contact with the side of the thickened plate (17).

4. The combined nickel waste liquid treatment device according to claim 3, characterized in that: The end of the shift rod (16) is provided with a curved surface.

5. The combined nickel waste liquid treatment device according to claim 1, characterized in that: The lifting assembly (8) includes two groups of brackets respectively fixed on two support plates (18), with each group of brackets having two members. A driving member (81) is fixed to the inner wall of the bracket, a connecting block is fixed to the telescopic end of the driving member (81), a snap ring (83) is fixed to the side of the connecting block, a circular ring (82) is fixedly sleeved on the circumferential surface of the storage tank (10), and the snap ring (83) is rotatably connected to the surface of the circular ring (82).

6. The combined nickel waste liquid treatment device according to claim 5, characterized in that: The driving member (81) is a hydraulic cylinder.

7. The combined nickel waste liquid treatment device according to claim 1, characterized in that: The reset assembly (9) includes a cavity (92) provided in a circular ring (82), a piston (91) being slidably connected in the cavity (92), a small hole being provided on the piston (91), and a damping oil being filled in the cavity (92). An arc rod (93) and a strong spring (96) are fixed on both sides of the piston (91), and the end of the strong spring (96) is fixedly connected to the side of the inner wall of the cavity (92). A notch is provided in the outer wall of the circular ring (82), and the end of the arc rod (93) passes through the circular ring (82) and is fixed with a block (94), which is located in the notch. A fixing block (95) is fixed to the inner wall of the snap ring (83), and the fixing block (95) and the block (94) are fitted together.

8. The combined nickel waste liquid treatment device according to claim 7, characterized in that: The center of the arc-shaped rod (93) is located on the central axis of the storage tank (10).

9. The combined nickel waste liquid treatment device according to claim 1, characterized in that: The two storage tanks (10) are symmetrically arranged with the central vertical plane passing through the batch reaction tank (5) as the symmetry plane.

10. The combined nickel waste liquid treatment device according to claim 1, characterized in that: The storage tank (10) is covered with a lid, and a handle is fixed on the lid.

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