CN115490359B

CN115490359B - Copper-clad iron waste liquid treatment device

Info

Publication number: CN115490359B
Application number: CN202211081253.7A
Authority: CN
Inventors: 温龙军
Original assignee: Chongqing Jiurui Metal Material Co ltd
Current assignee: Chongqing Jiurui Metal Material Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-06-23
Anticipated expiration: 2042-09-06
Also published as: CN115490359A

Abstract

The invention belongs to the technical field of wastewater treatment equipment, and particularly relates to a copper-clad iron waste liquid treatment device which comprises a liquid storage tank, a configuration tank, a first centrifugal machine, a transfer tank, a cooling tank and a second centrifugal machine; a first pipeline is connected between the liquid storage tank and the configuration tank; a second pipeline is connected between the configuration groove and the feeding end of the first centrifugal machine; the liquid outlet of the first centrifugal machine is connected with a main pipe, the main pipe is connected with a first branch pipe and a second branch pipe, and valves are arranged on the first branch pipe and the second branch pipe; a third pipeline is connected between the transfer tank and the cooling tank; a fourth pipeline is connected between the liquid storage tank and the middle part of the cooling tank; a fifth pipeline is connected between the cooling tank and the feeding end of the second centrifugal machine; a sixth pipeline is connected between the liquid outlet of the second centrifugal machine and the transfer tank. The treatment device is specially designed according to the recovery treatment flow of the copper-clad iron waste liquid, and the treatment efficiency is improved by using the scheme.

Description

Copper-clad iron waste liquid treatment device

Technical Field

The invention belongs to the technical field of wastewater treatment equipment, and particularly relates to a copper-clad iron waste liquid treatment device.

Background

Copper-clad iron powder is a main raw material of powder metallurgy, copper-clad iron powder is a brown irregular powder which is formed by uniformly cladding a layer of copper on the surface of iron through a displacement reaction of copper sulfate solution and iron powder and reducing, sintering and annealing by hydrogen, and is easy to form and used for being pressed into powder metallurgy parts such as gears, copper sleeves, oil-containing bearings and the like. In the process of preparing the copper-clad iron powder, a large amount of copper-clad iron waste liquid (namely ferrous sulfate waste liquid) can be generated, the components in the copper-clad iron waste liquid are complex, and the copper-clad iron waste liquid is directly discharged, so that the environment is seriously polluted, and resources such as ferrous sulfate, sulfuric acid and the like can be wasted, so that economic loss is caused. Therefore, the copper-clad iron waste liquid is usually recycled, and ferrous sulfate heptahydrate is prepared. The process for recycling the copper-clad iron waste liquid is complex, different equipment is needed in each process step, and the transfer of materials after one process is finished is complex; and some processing procedures are not processed by matched equipment, more processing needs depend on workers, the labor intensity of the workers is high, and the working efficiency is low.

Disclosure of Invention

The invention aims to provide a copper-clad iron waste liquid treatment device for solving the problems of troublesome recovery treatment operation and low recovery efficiency of copper-clad iron waste liquid.

In order to achieve the above purpose, the scheme of the invention is as follows: the copper-clad iron waste liquid treatment device comprises a liquid storage tank, a configuration tank, a first centrifugal machine, a transfer tank, a cooling tank and a second centrifugal machine, wherein a heating mechanism and a stirring mechanism are arranged on the configuration tank, and a refrigerator is arranged on the cooling tank; a first pipeline is connected between the liquid storage tank and the configuration tank, and a first delivery pump is arranged on the first pipeline; a second pipeline is connected between the configuration groove and the feeding end of the first centrifugal machine, and a second conveying pump is arranged on the second pipeline; the liquid outlet of the first centrifugal machine is connected with a main pipe, the main pipe is connected with a first branch pipe and a second branch pipe communicated with the transfer groove, and valves are arranged on the first branch pipe and the second branch pipe; a third pipeline is connected between the transfer tank and the cooling tank, and a third delivery pump is arranged on the third pipeline; a fourth pipeline is connected between the liquid storage tank and the middle part of the cooling tank, and a liquid discharge valve is arranged on the fourth pipeline; a fifth pipeline is connected between the cooling tank and the feeding end of the second centrifugal machine, and a fourth delivery pump is arranged on the fifth pipeline; a sixth pipeline is connected between the liquid outlet of the second centrifugal machine and the transfer tank.

The beneficial effect of this scheme lies in: the treatment device is specially designed according to the recovery treatment flow of the copper-clad iron waste liquid, after one procedure is treated on one device, the material can be quickly transferred to the device needed to be used in the next procedure, and then the next procedure is immediately carried out, so that the working efficiency is high. In addition, the labor capacity can be reduced by the worker for recycling operation by means of the device, the operation difficulty is reduced, and recycling efficiency is improved.

Alternatively, the heating mechanism includes a jacket provided on the disposition groove and an electric heater provided in the jacket. When the heating mechanism is required to be started to control the temperature of the solution in the configuration tank, water is added into the jacket, and the electric heater is started to heat the water in the jacket to raise the temperature. The heat of the water in the jacket is sequentially transferred to the configuration groove and the solution in the configuration groove, so that the temperature of the solution in the configuration groove is gradually increased, and the temperature of the solution in the configuration groove can be ensured to meet the requirements.

Optionally, the liquid storage tank is provided with a pH adjusting mechanism for adjusting the pH value of the solution in the liquid storage tank.

Optionally, the pH adjusting mechanism comprises a controller, a storage tank, a stirring part, a discharging part, a material pipe connected below the storage tank and a pH sensor for detecting the pH value of the solution in the liquid storage tank, wherein the material pipe is positioned above the liquid storage tank; the discharging part comprises a lower blocking block, a rotating block and an upper blocking block fixed on the material pipe, a connecting frame is connected between the upper blocking block and the lower blocking block, and the rotating block rotates and is connected between the upper blocking block and the lower blocking block in a sealing way; the rotating block is provided with a channel, the upper blocking block is provided with an upper through hole communicated with the material pipe, the lower blocking block is provided with a lower through hole, and the channel can be respectively communicated with the upper through hole and the lower through hole in the rotating process of the rotating block; the stirring part comprises a stirring shaft and a stirring motor for driving the stirring shaft to rotate, and stirring blades positioned in the liquid storage tank are arranged on the stirring shaft; the stirring shaft is provided with a driving gear, and the rotating block is provided with a gear ring meshed with the driving gear; the stirring motor and the pH sensor are electrically connected with the controller.

The pH sensor detects the pH value of the solution in the liquid storage tank, and when the pH value is detected to be higher than 2, the pH sensor feeds back signals to the controller, and the controller controls the stirring motor to work. The stirring motor drives the stirring shaft to rotate, the stirring shaft drives the rotating block to rotate in a gear transmission mode, and the rotating block rotates in-process channel is respectively communicated with the upper through hole and the lower through hole. When the channel is communicated with the upper through hole, sulfuric acid in the storage tank enters the channel through the material pipe and the upper through hole, and when the rotating block rotates to the channel to be communicated with the lower through hole, the sulfuric acid in the channel falls into the liquid storage tank through the lower through hole. Meanwhile, the stirring shaft drives the stirring blade to stir the ferrous sulfate waste liquid and sulfuric acid in the liquid storage tank, so that the sulfuric acid is fully mixed with the ferrous sulfate waste liquid. When the pH value of the solution in the liquid storage tank is detected to be less than 2 by the pH sensor, the pH sensor feeds back a signal to the controller, the controller controls the stirring motor to stop working, the stirring shaft stops working at the moment, and the discharging part also stops adding sulfuric acid into the liquid storage tank. In the scheme, the pH value of the solution in the liquid storage tank is automatically adjusted by utilizing the pH adjusting mechanism, when the pH value is higher than the requirement, the discharging part automatically and quantitatively inputs sulfuric acid into the liquid storage tank, and meanwhile, the stirring shaft works, so that the sulfuric acid is fully mixed with the solution in the liquid storage tank, and the pH value of the solution in the liquid storage tank is effectively adjusted.

Optionally, the first centrifuge is a filter centrifuge.

Optionally, the first centrifuge comprises an outer cylinder, an inner cylinder arranged in the outer cylinder, a rotary drum arranged in the inner cylinder and a driving part for driving the rotary drum to rotate, and a plurality of through holes are formed in the side wall of the rotary drum; the inner cylinder is rotationally and hermetically connected with the upper end of the rotary drum, a liquid storage cavity is enclosed between the rotary drum and the inner cylinder, and the main pipe is communicated with the liquid storage cavity and penetrates through the outer cylinder; a discharging cavity is defined between the inner cylinder and the outer cylinder, and a discharging hole is formed below the outer cylinder; the rotary drum is internally provided with a conical disc with a small upper end and a large lower end and annular filter cloth attached to the inner wall of the rotary drum, the upper end of the annular filter cloth is fixed on the upper end of the rotary drum, the lower end of the annular filter cloth is fixed on the rotary drum, and the conical disc is clamped at the bottom of the rotary drum. When the copper-clad iron powder containing the waste liquid is required to be cleaned and dehydrated, materials are added into the rotary drum, the driving part is started, and the driving part drives the rotary drum to rotate. Under the action of centrifugal force, liquid enters the liquid storage cavity through the annular filter cloth and the through holes and then is conveyed into the transfer tank through the main pipe and the second branch pipe, and the dehydrated copper-clad iron powder is trapped in the rotary drum. And then adding secondary powder washing water into the rotary drum, starting the driving part, and cleaning and dehydrating the copper-clad iron powder. And opening a valve on the first branch pipe, closing a valve on the second branch pipe, adding clear water into the rotary drum, starting the driving part, and finally cleaning and dehydrating the copper-clad iron powder. After the operation is finished, an acting force is applied to the conical disc, so that the conical disc is lifted upwards until the conical disc moves to a limit position, at the moment, the conical disc and the annular filter cloth are positioned outside the rotary drum, the inside of the annular filter cloth is turned outwards, materials in the annular filter cloth fall to a discharging cavity in a dispute mode, and finally the materials are discharged through a discharging hole. The first centrifugal machine of this scheme is specially designed to retrieving copper-clad iron powder, the processing to copper-clad iron powder that can be better.

Optionally, the driving part comprises a power motor, a transmission chain, a rotating shaft rotatably connected to the inner cylinder, a first sprocket fixed on the rotating shaft and a second sprocket fixed on an output shaft of the power motor, and the transmission chain is sleeved on the first sprocket and the second sprocket; the upper end of the rotating shaft is connected with the rotary drum; a concave cavity is formed in the rotating shaft, a telescopic shaft with a cavity is arranged in the concave cavity, and the upper part of the telescopic shaft penetrates through the rotating drum and is connected with the conical disc; the rotary center of the lower end of the rotary shaft is rotationally connected with an inlet pipe with one end penetrating out of the outer cylinder, the inlet pipe is communicated with the cavity, and a liquid discharge valve positioned outside the outer cylinder is arranged on the inlet pipe; the inlet pipe is connected with a branch pipe, and a one-way liquid inlet valve positioned outside the outer cylinder is arranged on the branch pipe. When the driving part is required to work, the power motor is started, the power motor drives the rotating shaft to rotate in a chain transmission mode, and the rotating shaft drives the rotary drum to move for dehydration operation. After the first centrifugal machine works, when materials in the rotary drum need to be discharged, the liquid discharge valve is closed, quantitative hydraulic oil is introduced into the cavity of the telescopic shaft through the branch pipe, and the telescopic shaft stretches to the limit position under the action of the hydraulic oil. In the process of extension of the telescopic shaft, the telescopic shaft pushes the conical disc to move upwards, the conical disc and the annular filter cloth are finally located outside the rotary drum, the inside of the annular filter cloth is turned outwards, materials in the annular filter cloth fall into the discharging cavity, and finally the materials are discharged through the discharging hole. When the conical disc and the annular filter cloth are required to be reset after the materials are discharged, the liquid discharge valve is opened, and hydraulic oil in the telescopic shaft is discharged.

Optionally, the bottom surface of the rotary drum is provided with a plurality of grooves, and the bottoms of the grooves are provided with magnets; the conical disk is provided with an iron block clamped in the groove. The iron block is clamped in the groove, and the iron block is attracted with the magnet, so that the conical disc can be well fixed on the rotary drum, and the annular filter cloth is prevented from being twisted by the conical disc due to the inertia effect during centrifugal operation.

Optionally, the second centrifuge is an automatic deslagging centrifuge. And an automatic deslagging centrifugal machine is used as a second centrifugal machine, the dehydrated ferrous sulfate heptahydrate is automatically discharged, and the product is convenient to collect, so that continuous operation is facilitated.

Drawings

FIG. 1 is a flow chart of copper-clad iron waste liquid recovery treatment;

FIG. 2 is a schematic diagram showing the structure of a liquid storage tank and a pH adjusting mechanism according to a first embodiment of the present invention;

FIG. 3 is a front view of a first centrifuge according to a first embodiment of the present invention;

fig. 4 is a cross-sectional view of a second centrifuge in a top view in accordance with a second embodiment of the present invention.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the liquid storage tank 10, the stirring motor 20, the stirring shaft 21, the stirring blade 22, the driving gear 23, the storage tank 30, the material pipe 31, the upper block 32, the upper port 321, the rotating block 33, the gear ring 331, the channel 332, the lower block 34, the lower port 341, the connecting frame 35, the power motor 40, the second sprocket 41, the transmission chain 42, the outer cylinder 50, the cover 51, the material feeding pipe 511, the liquid storage chamber 52, the discharge chamber 53, the material discharging port 54, the rotating drum 55, the annular inclined plate 56, the inner cylinder 57, the conical disc 58, the main pipe 59, the rotating shaft 60, the first sprocket 61, the telescopic shaft 62, the inlet pipe 63, the liquid discharging valve 64, the branched pipe 65, the one-way liquid inlet valve 66, the casing 70, the rotating drum 71, the cloth hopper 72, the material feeding pipe 73, the conical baffle 74, the mounting bracket 75, the material collecting chamber 76, the pushing post 80, the pushing disc 81, the concave groove 82, the driving shaft 83, the driven wheel 84, the driving motor 90, the driving wheel 91, the belt 92, the speed reducer 93, and the pushing rod 94.

Example 1

The utility model provides a copper-clad iron waste liquid treatment device, includes liquid storage tank 10, disposes groove, first centrifuge, transfer groove, cooling tank and second centrifuge, and the second centrifuge is automatic sediment centrifuge, specifically, in this embodiment, the second centrifuge uses cone basket centrifuge. The configuration groove is provided with a heating mechanism and a stirring mechanism (the stirring mechanism is in the prior art and is not described in detail here) for stirring the solution in the configuration groove, the heating mechanism comprises a jacket arranged on the configuration groove and an electric heater arranged in the jacket, and water is filled in the jacket. The cooling tank is provided with a refrigerator (the refrigerator uses the existing compression refrigerator and is not described here any more), and the temperature of the materials in the cooling tank can be controlled at 5-8 ℃ through the refrigerator.

A first pipeline is connected between the liquid storage tank 10 and the configuration tank, and a first delivery pump is arranged on the first pipeline, so that ferrous sulfate waste liquid in the liquid storage tank 10 can be delivered into the configuration tank through the first delivery pump. A second pipeline is connected between the configuration groove and the feeding end of the first centrifugal machine, and a second conveying pump is arranged on the second pipeline; the liquid outlet of the first centrifugal machine is connected with a main pipe 59, the main pipe 59 is connected with a first branch pipe and a second branch pipe, and valves are arranged on the first branch pipe and the second branch pipe. The second branch pipe is communicated with the transfer tank, and liquid discharged by the first centrifugal machine can be introduced into the transfer tank through the second branch pipe. A third pipeline is connected between the transfer tank and the cooling tank, and a third delivery pump is arranged on the third pipeline. A fourth pipeline is connected between the liquid storage tank 10 and the middle part of the cooling tank, a liquid discharge valve is arranged on the fourth pipeline, and liquid in the upper part of the cooling tank can be introduced into the liquid storage tank 10 by opening the liquid discharge valve. A fifth pipeline is connected between the bottom of the cooling tank and the feeding end of the second centrifugal machine, and a fourth conveying pump is arranged on the fifth pipeline; a sixth pipeline is connected between the liquid outlet of the second centrifugal machine and the transfer tank.

The liquid storage tank 10 is provided with a pH adjusting mechanism for adjusting the pH value of the solution in the liquid storage tank 10, as shown in fig. 2, the pH adjusting mechanism comprises a controller, a storage tank 30, a stirring part, a discharging part, a material pipe 31 connected below the storage tank 30 and a pH sensor (the pH sensor is not shown in the figure) for detecting the pH value of the solution in the liquid storage tank 10, the material pipe 31 is positioned above the liquid storage tank 10, and the material discharged from the material pipe 31 can fall into the liquid storage tank 10. The stirring part comprises a stirring shaft 21 and a stirring motor 20, and the stirring motor 20 and a storage tank 30 are fixedly arranged above the liquid storage tank 10 through brackets (not shown in the figure). An output shaft of the stirring motor 20 is connected with a stirring shaft 21, and stirring blades 22 positioned in the liquid storage tank 10 are welded on the stirring shaft 21. The stirring motor 20 and the pH sensor are electrically connected with the controller, and when the pH sensor detects that the pH value of the solution in the liquid storage tank 10 is higher than 2, the pH sensor feeds back signals to the controller, and the controller controls the motor to work; and when the pH sensor detects that the pH value of the liquid in the liquid storage tank 10 is less than 2, the pH sensor feeds back a signal to the controller, and the controller controls the motor to stop working.

The discharging part comprises a lower blocking block 34, a rotating block 33 and an upper blocking block 32 fixedly connected to the material pipe 31, a connecting frame 35 is fixedly connected between the upper blocking block 32 and the lower blocking block 34, and the rotating block 33 rotates and is hermetically connected between the upper blocking block 32 and the lower blocking block 34. Specifically, the bottom surface of the upper blocking piece 32 and the upper surface of the lower blocking piece 34 are both provided with annular grooves, and the rotating piece 33 is provided with annular blocks which are clamped and connected in the annular grooves in a sliding manner. The rotating block 33 is provided with a channel 332, the upper blocking block 32 is provided with an upper through hole 321 communicated with the material pipe 31, the lower blocking block 34 is provided with a lower through hole 341, and the channel 332 can be respectively communicated with the upper through hole 321 and the lower through hole 341 in the rotating process of the rotating block 33. The stirring shaft 21 is welded with a driving gear 23, and the rotating block 33 is welded with a gear ring 331 meshed with the driving gear 23.

As shown in fig. 3, the first centrifuge is a filter centrifuge, and includes an outer tub 50, an inner tub 57, a drum 55, and a driving part for driving the drum 55 to rotate, a mounting bracket is connected between the inner tub 57 and the outer tub 50, and the inner tub 57 is mounted in the outer tub 50 through the mounting bracket. The drum 55 is located in the inner cylinder 57, and a plurality of through holes are formed in the side wall of the drum 55. The upper end of the outer cylinder 50 is provided with a cover body 51, and a feed pipe 511 with one end extending into the rotary drum 55 is connected to the cover body 51. The upper end of the rotary drum 55 is welded with an annular sloping plate 56, and the upper end of the annular sloping plate 56 is small and the lower end is large; the inner cylinder 57 is rotatably and sealingly connected to the annular swash plate 56. There is a space between the drum 55 and the inner cylinder 57, a liquid storage cavity 52 is enclosed between the drum 55 and the inner cylinder 57, a main pipe 59 is connected to the bottom of the inner cylinder 57, and the main pipe 59 is communicated with the liquid storage cavity 52 and penetrates through the outer cylinder 50. A space exists between the inner cylinder 57 and the outer cylinder 50, a discharging cavity 53 is defined between the inner cylinder 57 and the outer cylinder 50, and a discharging hole 54 is formed below the outer cylinder 50. The rotary drum 55 is internally provided with a conical disk 58 with a small upper end and a large lower end and annular filter cloth attached to the inner wall of the rotary drum 55, the upper end of the annular filter cloth is fixed on the upper end of the rotary drum 55, and the lower end of the annular filter cloth is fixed on the rotary drum 55. The conical disc 58 is clamped at the bottom of the rotary drum 55, specifically, the bottom surface of the inner cylinder 57 is provided with a plurality of grooves uniformly distributed along the circumferential direction of the conical disc 58, the bottom of the grooves is fixed with a magnet, and the conical disc 58 is fixed with an iron block clamped in the grooves.

The driving part includes a power motor 40, a driving chain 42, a first sprocket 61, a second sprocket 41, and a rotating shaft 60 rotatably coupled to the bottom surface of the inner cylinder 57, and an upper end of the rotating shaft 60 is welded to the center of the bottom of the drum 55. The power motor 40 is fixedly installed on the side wall of the outer cylinder 50, the first sprocket 61 is welded on the rotating shaft 60, the second sprocket 41 is welded on the output shaft of the power motor 40, and the transmission chain 42 is sleeved on the first sprocket 61 and the second sprocket 41. The rotating shaft 60 is internally provided with a concave cavity, a telescopic shaft 62 is fixed in the concave cavity, and the telescopic shaft 62 penetrates through the bottom of the rotary drum 55. The telescopic shaft 62 comprises a plurality of sliding drums with different sizes, through cavities penetrating through two ends are formed in the sliding drums, the sliding drums are in sliding and sealing connection with each other according to the sizes from large to small, the sliding drum with the largest size is welded at the rotating center of the rotating shaft 60, the upper end of the sliding drum with the smallest size is welded at the bottom of the conical disc 58, and a closed cavity is formed in the telescopic shaft 62. Specifically, the inner wall of the sliding cylinder with larger size is provided with a strip-shaped groove, the sliding cylinder with smaller size is provided with a bump which is clamped and connected in the strip-shaped groove in a sliding way, and the sliding cylinder with smaller size is connected in the sliding cylinder with larger size in a sliding way. The rotary center of the lower end of the rotary shaft 60 rotates and is connected with an inlet pipe 63 with one end penetrating out of the outer cylinder 50 in a sealing way, and the inlet pipe 63 is communicated with the cavity. The inlet pipe 63 is connected with a branch pipe 65, the branch pipe 65 is provided with a one-way liquid inlet valve 66 positioned outside the outer cylinder 50, external liquid can enter the cavity through the one-way liquid inlet valve 66, and liquid in the cavity cannot be discharged through the one-way liquid inlet valve 66. A drain valve 64 is mounted on the inlet pipe 63 and located outside the outer tube 50, the drain valve 64 being located at an end remote from the rotary shaft 60.

The working flow of the scheme is as follows:

the liquid storage tank 10 is used for storing copper-clad iron waste liquid, and the pH value of the solution in the liquid storage tank 10 is adjusted to be less than 2 through a pH adjusting mechanism. When the copper-clad iron waste liquid needs to be recovered, as shown in the flow chart of fig. 1, the copper-clad iron waste liquid is conveyed into the configuration groove through the first conveying pump, the electric heater is started, and the water in the jacket is heated by the electric heater to raise the temperature of the copper-clad iron waste liquid. The heat of the water in the jacket is sequentially transferred to the configuration tank and the solution in the configuration tank, so that the temperature of the solution in the configuration tank is gradually increased, and the temperature of the solution in the configuration tank can be kept at 32-38 ℃. And adding copper sulfate into the configuration tank, starting the stirring mechanism to dissolve the copper sulfate, and taking the copper-clad iron waste liquid as a standard that all copper sulfate can be dissolved completely, wherein the total content of copper and iron ions in the copper-clad iron waste liquid is approximately 110-120g/L in a near-saturation state. And adding materials such as iron powder, and performing cladding operation in a configuration groove to produce and prepare copper-clad iron powder. After the operation is finished, the materials in the configuration tank are mainly copper-clad iron powder and ferrous sulfate solution, and the ferrous sulfate solution is in an unsaturated state at 32-38 ℃ and does not separate ferrous sulfate crystals.

The materials in the configuration groove are conveyed into the first centrifugal machine through the second conveying pump, the valve on the second branch pipe is ensured to be opened, the valve on the first branch pipe is ensured to be closed, the power motor 40 is started, the power motor 40 drives the rotating shaft 60 to rotate in a chain transmission mode, and the rotating shaft 60 drives the rotary drum 55 to move to perform dehydration operation. Under the action of centrifugal force, liquid on the material enters the liquid storage cavity 52 through the annular filter cloth and the through holes, and then is conveyed into the transfer tank through the main pipe 59 and the second branch pipe, and dehydrated copper-clad iron powder is left in the first centrifugal machine. And then the power motor 40 is started, secondary powder washing water is added into the rotary drum 55 to wash the copper-clad iron powder, at the moment, the water removed by the first centrifugal machine (the water removed is called primary powder washing water) is conveyed into the transfer tank through the second branch pipe, and the dehydrated copper-clad iron powder still remains in the first centrifugal machine. The valve on the first branch pipe is opened, the valve on the second branch pipe is closed, the power motor 40 is started again, clean water is added into the rotary drum 55 to clean the copper-clad iron powder, water removed by the first centrifugal machine (called secondary powder washing water) is discharged through the first branch pipe, and a dehydrated copper-clad iron powder product is obtained in the rotary drum 55. When the material in the drum 55 is required to be discharged, the cover 51 is opened, the liquid discharge valve 64 is closed, a certain amount of hydraulic oil (other substances can be introduced) is introduced into the cavity of the telescopic shaft 62 through the branch pipe 65, and the telescopic shaft 62 is extended to the limit position under the action of the hydraulic oil. In the process of extending the telescopic shaft 62, the telescopic shaft 62 pushes the conical disc 58 to move upwards, so that the conical disc 58 and the annular filter cloth are finally located outside the rotary drum 55, the inside of the annular filter cloth is turned outwards, and materials in the annular filter cloth fall into the discharging cavity 53 and are finally discharged through the discharging hole 54. When the conical disc 58 and the annular filter cloth are required to be reset after the materials are discharged, the liquid discharge valve 64 is opened, and the hydraulic oil in the telescopic shaft 62 is discharged.

And (3) conveying the solution in the transfer tank into a cooling tank through a third conveying pump, starting a refrigerator, controlling the temperature of the solution in the cooling tank to be 5-8 ℃, cooling and separating out crystals of ferrous sulfate heptahydrate, and settling the crystals at the bottom of the cooling tank, wherein the concentration of Fe < 2+ > in the solution in the cooling tank is reduced from 110-120g/L to about 70 g/L. Opening a liquid discharge valve on a fourth pipeline, introducing the cooled solution into the liquid storage tank 10, then starting a fourth conveying pump, introducing the material at the bottom of the cooling tank into a second centrifugal machine, starting the second centrifugal machine, introducing the dehydrated solution into a transfer tank through a sixth pipeline, and obtaining the dehydrated material which is a recovered ferrous sulfate heptahydrate product.

Example two

The present embodiment differs from the first embodiment in that: the second centrifuge in the present embodiment is different from the first embodiment in that the second centrifuge includes a housing, a rotary drum 71, a driving shaft 83, a push column 80, and a casing 70, a driving motor 90, and a speed reducer 93 all mounted on the housing, as shown in fig. 4. The rotary drum 71 is located in the casing 70, a plurality of liquid outlet holes are formed in the circumferential side wall of the rotary drum 71, and a screen is fixed to the circumferential side wall of the rotary drum 71. One end of the opening of the rotary drum 71 is provided with a conical baffle 74, one end of the conical baffle 74 far away from the rotary drum 71 is rotationally and hermetically connected with the inner wall of the casing 70, a collecting cavity 76 is formed between the conical baffle 74 and the casing 70, and the lower end of the casing 70 is connected with a discharging pipe communicated with the collecting cavity 76. The lower end of the casing 70 is also connected with a liquid outlet pipe, and one end of the liquid outlet pipe can be opposite to the liquid outlet hole.

The driving shaft 83 is rotatably coupled within the casing 70, and one end of the driving shaft 83 is welded to the center position of the rotary drum 71. The driving shaft 83 is hollow, and the push post 80 is located in the driving shaft 83, and one end of the push post 80 passes through the rotating drum 71 and is rotatably connected with the rotating drum 71. A pushing disc 81 positioned in the rotary drum 71 is welded on one end of the pushing column 80, and the pushing disc 81 can push the material on the screen to the material collecting cavity 76 when sliding towards one side of the conical baffle 74; the other end of the push post 80 is provided with a concave groove 82, and the inner wall of the push post 80 is provided with a cam groove forming a closed loop. The material pushing plate 81 is fixed with a cloth hopper 72 through a mounting bracket 75, and one end of the cloth hopper 72 facing the material pushing plate 81 is a large-diameter end. The casing 70 is connected with a feeding pipe 73, and one end of the feeding pipe 73 extends into the cloth hopper 72. The material is fed through the feed tube 73, and the material passes through the cloth hopper 72, the gap between the cloth hopper 72 and the pushing tray 81 in sequence, and finally enters the rotating drum 71.

The driving wheel 91 is welded on the output shaft of the driving motor 90, the driven wheel 84 is welded on the driving shaft 83, the driving wheel 91 and the driven wheel 84 are sleeved with a belt 92, and one side of the belt 92 penetrates through the casing 70 and is positioned in the casing 70. An output shaft of the driving motor 90 is connected with an input shaft of a speed reducer 93, a push rod 94 with one end penetrating through the casing 70 is connected to the output shaft of the speed reducer 93, a clamping rod with one end slidably connected to the cam groove is arranged on the push rod 94, and balls located in the cam groove are rotatably connected to the clamping rod. When the push rod 94 rotates, the push rod 80 can reciprocate under the action of the cam groove and the clamping rod.

The foregoing is merely exemplary embodiments of the present invention, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the practical applicability of the present invention.

Claims

1. A copper-clad iron waste liquid treatment device is characterized in that: the device comprises a liquid storage tank, a configuration tank, a first centrifugal machine, a transfer tank, a cooling tank and a second centrifugal machine, wherein the configuration tank is provided with a heating mechanism and a stirring mechanism, and the cooling tank is provided with a refrigerator; a first pipeline is connected between the liquid storage tank and the configuration tank, and a first delivery pump is arranged on the first pipeline; a second pipeline is connected between the configuration groove and the feeding end of the first centrifugal machine, and a second conveying pump is arranged on the second pipeline; the liquid outlet of the first centrifugal machine is connected with a main pipe, the main pipe is connected with a first branch pipe and a second branch pipe communicated with the transfer groove, and valves are arranged on the first branch pipe and the second branch pipe; a third pipeline is connected between the transfer tank and the cooling tank, and a third delivery pump is arranged on the third pipeline; a fourth pipeline is connected between the liquid storage tank and the middle part of the cooling tank, and a liquid discharge valve is arranged on the fourth pipeline; a fifth pipeline is connected between the cooling tank and the feeding end of the second centrifugal machine, and a fourth delivery pump is arranged on the fifth pipeline; a sixth pipeline is connected between the liquid outlet of the second centrifugal machine and the transfer tank; the second centrifugal machine comprises a machine base, a rotating drum, a driving shaft, a push column, a machine shell, a driving motor and a speed reducer; the rotary drum is positioned in the shell, a plurality of liquid outlet holes are formed in the circumferential side wall of the rotary drum, and a screen is fixed on the circumferential side wall of the rotary drum; one end of the opening of the rotary drum is provided with a conical baffle, one end of the conical baffle, which is far away from the rotary drum, is rotationally and hermetically connected with the inner wall of the shell, a collecting cavity is formed between the conical baffle and the shell, and the lower end of the shell is connected with a discharging pipe communicated with the collecting cavity; the lower end of the shell is also connected with a liquid outlet pipe; the driving shaft is rotationally connected in the shell, and one end of the driving shaft is welded on the central position of the rotary drum; the driving shaft is arranged in a hollow way, the pushing column is positioned in the driving shaft, and one end of the pushing column penetrates through the rotating drum and is in rotating connection with the rotating drum; one end of the pushing column is welded with a pushing tray positioned in the rotary drum, and the pushing tray can push the materials on the screen to the collecting cavity when sliding towards one side of the conical baffle; the other end of the push column is provided with a concave groove, and the inner wall of the push column is provided with a cam groove forming a closed loop; a cloth hopper is fixed on the pushing tray, and one end of the cloth hopper facing the pushing tray is a large-diameter end; a feeding pipe is connected to the shell, and one end of the feeding pipe extends into the cloth hopper; the driving motor is welded with a driving wheel on an output shaft, the driving shaft is welded with a driven wheel, and belts are sleeved on the driving wheel and the driven wheel; an output shaft of the driving motor is connected with an input shaft of the speed reducer, a push rod with one end penetrating through the shell is connected to the output shaft of the speed reducer, a clamping rod with one end slidably connected to the cam groove is arranged on the push rod, and a ball positioned in the cam groove is rotationally connected to the clamping rod; the liquid storage tank is provided with a pH adjusting mechanism for adjusting the pH value of the solution in the liquid storage tank; the pH adjusting mechanism comprises a controller, a storage tank, a stirring part, a discharging part, a material pipe connected below the storage tank and a pH sensor for detecting the pH value of the solution in the liquid storage tank, wherein the material pipe is positioned above the liquid storage tank; the discharging part comprises a lower blocking block, a rotating block and an upper blocking block fixed on the material pipe, a connecting frame is connected between the upper blocking block and the lower blocking block, and the rotating block rotates and is connected between the upper blocking block and the lower blocking block in a sealing way; the rotating block is provided with a channel, the upper blocking block is provided with an upper through hole communicated with the material pipe, the lower blocking block is provided with a lower through hole, and the channel can be respectively communicated with the upper through hole and the lower through hole in the rotating process of the rotating block; the stirring part comprises a stirring shaft and a stirring motor for driving the stirring shaft to rotate, and stirring blades positioned in the liquid storage tank are arranged on the stirring shaft; the stirring shaft is provided with a driving gear, and the rotating block is provided with a gear ring meshed with the driving gear; the stirring motor and the pH sensor are electrically connected with the controller; the first centrifugal machine is a filter type centrifugal machine; the first centrifugal machine comprises an outer cylinder, an inner cylinder arranged in the outer cylinder, a rotary drum arranged in the inner cylinder and a driving part used for driving the rotary drum to rotate, and a plurality of through holes are formed in the side wall of the rotary drum; the inner cylinder is rotationally and hermetically connected with the upper end of the rotary drum, a liquid storage cavity is enclosed between the rotary drum and the inner cylinder, and the main pipe is communicated with the liquid storage cavity and penetrates through the outer cylinder; a discharging cavity is defined between the inner cylinder and the outer cylinder, and a discharging hole is formed below the outer cylinder; the rotary drum is internally provided with a conical disc with a small upper end and a large lower end and annular filter cloth attached to the inner wall of the rotary drum, the upper end of the annular filter cloth is fixed on the upper end of the rotary drum, the lower end of the annular filter cloth is fixed on the rotary drum, and the conical disc is clamped at the bottom of the rotary drum; the driving part comprises a power motor, a transmission chain, a rotating shaft rotatably connected to the inner cylinder, a first sprocket fixed on the rotating shaft and a second sprocket fixed on an output shaft of the power motor, and the transmission chain is sleeved on the first sprocket and the second sprocket; the upper end of the rotating shaft is connected with the rotary drum; a concave cavity is formed in the rotating shaft, a telescopic shaft with a cavity is arranged in the concave cavity, and the upper part of the telescopic shaft penetrates through the rotating drum and is connected with the conical disc; the rotary center of the lower end of the rotary shaft is rotationally connected with an inlet pipe with one end penetrating out of the outer cylinder, the inlet pipe is communicated with the cavity, and a liquid discharge valve positioned outside the outer cylinder is arranged on the inlet pipe; the inlet pipe is connected with a branch pipe, and a one-way liquid inlet valve positioned outside the outer cylinder is arranged on the branch pipe.

2. The copper-clad iron waste liquid treatment device according to claim 1, wherein: the heating mechanism comprises a jacket arranged on the configuration groove and an electric heater arranged in the jacket.

3. The copper-clad iron waste liquid treatment device according to claim 1, wherein: the bottom surface of the rotary drum is provided with a plurality of grooves, and the bottoms of the grooves are provided with magnets; the conical disk is provided with an iron block clamped in the groove.