Conductive slurry electromagnetic iron remover

Abstract

The utility model discloses a conductive slurry electromagnetic de-ironing separator, which comprises a main shell, a conductive slurry electromagnetic de-ironing separator, a conductive slurry electromagnetic de-ironing separator, a conductive slurry electromagnetic de-ironing separator and a conductive slurry electromagnetic de-ironing separator, the magnetic conduction chamber is arranged in the coil cavity, and a fixing rod and a screen connected with the fixing rod are arranged in the magnetic conduction chamber; the electromagnetic coil is arranged in the coil cavity and immersed in the insulating oil, and the magnetic conductive chamber is surrounded by the electromagnetic coil; a compressed air inlet; the compressed air inlet is communicated with the interior of the magnetic conductive chamber and is externally connected with compressed air; and the vibration mechanism comprises a vibration motor and a vibration transmission screw rod connected with the vibration motor, and the vibration transmission screw rod is connected with the fixing rod. According to the electromagnetic iron remover, the screen can vibrate up and down during cleaning work through the vibrating mechanism, the design is reasonable, the structure is compact, the occupied area is small, production and use are convenient, automatic cleaning can be achieved, the high-temperature-resistant and corrosion-resistant magnetic dielectric net is adopted, a uniform high-density magnetic field is achieved, and the adsorption efficiency and effect are improved.

Description

Technical Field

[0001] The utility model relates to an electromagnetic iron remover for conductive slurry, belonging to the technical field of lithium battery production. Background Art

[0002] Against the backdrop of the rapid development of the new energy industry, the explosive growth of new materials such as lithium batteries has put forward higher requirements for performance indicators. Safety performance is a key performance indicator of lithium batteries, and magnetic foreign matter will affect the safety performance of batteries. Conductive slurry is an indispensable part of the lithium battery production process. There are some magnetic foreign matter in its production process, so it is necessary to strictly control the magnetic foreign matter in the conductive slurry production process.

[0003] Electromagnetic iron remover has become one of the important equipment in the production process of conductive slurry. Electromagnetic iron remover is a semi-automatic iron remover that removes magnetic impurities from the slurry through the current magnetic field generated by the DC excitation power supply. However, during the iron removal process, the surface of the magnetic source or the iron-absorbing medium of the iron remover will absorb a certain amount of magnetic impurities. When a certain amount of ferromagnetic impurities are absorbed, the adsorption force will be greatly weakened, thereby affecting the reabsorption of magnetic impurities. At this time, the impurities on the surface of the magnetic source or the iron-absorbing medium must be removed, otherwise it will seriously affect the iron removal effect of the iron remover.

[0004] Due to the extremely complex structure of the electromagnetic iron remover screen, the screen needs to be repeatedly cleaned and flushed with cleaning fluid to ensure that it is thoroughly cleaned. Especially for conductive slurries, the cost of cleaning fluid is high, and large-scale repeated cleaning is an unbearable cost expenditure for enterprises. Therefore, the current cleaning of electromagnetic iron removers is to remove the iron-absorbing medium for manual cleaning after the power is turned off. Although the manual cleaning method can reduce the loss of cleaning fluid, it is time-consuming and laborious to shut down the machine for disassembly and cleaning. Long-term contact will affect the health of employees and greatly reduce the iron removal efficiency. In addition, other impurities will be introduced during repeated disassembly and assembly, causing certain damage to the machine. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a conductive slurry electromagnetic iron remover to improve cleaning efficiency, reduce costs, reduce manual intervention and reduce damage to the machine.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A conductive slurry electromagnetic iron remover, comprising:

[0008] A main housing, wherein a coil cavity is provided in the main housing and the coil cavity is filled with insulating oil;

[0009] A magnetic conductive chamber, the magnetic conductive chamber is arranged in the coil cavity, and a fixing rod and a screen connected to the fixing rod are arranged in the magnetic conductive chamber;

[0010] An electromagnetic coil, the electromagnetic coil is arranged in the coil cavity and immersed in the insulating oil, and the magnetic conductive chamber is surrounded by the electromagnetic coil;

[0011] A compressed air inlet; the compressed air inlet is connected to the interior of the magnetic conductive chamber, and the compressed air inlet is connected to the compressed air; and

[0012] A vibration mechanism comprises a vibration motor and a vibration transmission screw connected to the vibration motor, and the vibration transmission screw is connected to the fixing rod.

[0013] In one embodiment of the present invention, the screen comprises multiple layers of magnetic medium mesh stacked one on top of the other.

[0014] In one embodiment of the utility model, the inner wall of the magnetic conductive chamber is provided with an outer cover, the outer cover is located between the inner wall of the magnetic conductive chamber and the screen, and the outer cover is connected to a bearing step provided on the inner wall of the magnetic conductive chamber.

[0015] In one embodiment of the present invention, the outer cover is made of non-magnetic material.

[0016] In one embodiment of the utility model, the vibration mechanism is connected above the magnetic conductive chamber, and the vibration mechanism also includes a vibration-damping connection valve sleeved outside the vibration transmission screw.

[0017] In one embodiment of the utility model, the upper end of the magnetic conductive chamber extends out of the main shell body, and the magnetic conductive chamber extending out of the main shell body is connected to a feed seat, one side of the feed seat is connected to a cleaning pipe, and the other side is connected to a discharge pipe, and pneumatic butterfly valves are provided on the cleaning pipe and the discharge pipe; a down pipe is connected to the bottom of the magnetic conductive chamber, and the down pipe is connected to a feed pipe, a residual material discharge pipe and a slag discharge pipe, and pneumatic butterfly valves are provided on the feed pipe, the residual material discharge pipe and the slag discharge pipe.

[0018] In one embodiment of the utility model, it also includes a cooling system, which includes a plate cooler, an oil temperature sensor, an oil pump and a hydraulic pipe; one end of the oil pump is connected to the plate cooler through the hydraulic pipe, and the other end is connected to one side of the coil cavity through a pipeline, and the plate cooler is connected to the other side of the coil cavity through a pipeline.

[0019] In one embodiment of the utility model, a main housing cover is arranged above the main housing, the main housing cover is connected to the main housing via a plurality of bolts, and a junction box and an air filter are arranged on the main housing cover.

[0020] In one embodiment of the present invention, a frame is further included, and the main shell is arranged on the frame.

[0021] In one implementation of the utility model, an electrical box is also provided on the frame.

[0022] The beneficial effects of the utility model are:

[0023] The electromagnetic iron remover provided by the utility model adopts an up-and-down vibration cleaning method, and the screen is immersed in the cleaning liquid as a whole. The slurry on the surface of the screen is directly impacted by the vibration of the cleaning liquid, so that the slurry is dissolved in the cleaning liquid. Since the cleaning liquid is a soluble liquid configured separately according to the slurry, the slurry will no longer adhere to the screen after being separated from the screen. In practical use, only two to three vibration cleanings are required, and the screen can be cleaned by auxiliary flushing several times. The amount of cleaning liquid used can save at least 50kg, which greatly reduces the cost of the cleaning liquid. At the same time, the entire cleaning time is shortened to less than 45 minutes, and the cleaning time for slurries with lower viscosity can even be shortened to less than 30 minutes. Compared with flushing cleaning for at least two hours and manual cleaning of the screen for at least half a day, this cleaning method greatly shortens the cleaning time and greatly improves the cleaning efficiency. In addition, this closed cleaning can reduce the possibility of contamination caused by the disassembly and assembly of the screen. Whether in terms of cleaning effect, cleaning time and cleaning loss, the electromagnetic iron remover provided by the utility model adopts an up-and-down vibration cleaning method that is far superior to the existing cleaning method, can realize automatic cleaning, and save labor costs.

[0024] In addition, by providing an outer cover between the screen and the inner wall of the magnetic chamber to separate the two, during operation, the risk of repeated friction between the outer side of the screen and the inner wall of the magnetic chamber causing the magnetic particles adsorbed on the outer side of the screen to fall off and new metal foreign matter to be generated can be effectively reduced. In particular, the outer cover is set to a non-magnetic material, which has the advantages of easy installation and disassembly, high cost performance, fire resistance, corrosion resistance and non-stick. The existing electromagnetic iron remover will generate a lot of heat during use, which will affect the service life of the equipment and increase the aging rate of the equipment, so the electromagnetic iron remover needs to be cooled. When the electromagnetic coil is energized, the screen will be magnetized, so that the screen adsorbs magnetic impurities in the slurry. The temperature of the electromagnetic coil rises during operation. The cooling oil can protect the electromagnetic coil from oxidation. The cooling system can circulate and cool the insulating oil in the coil cavity to avoid the electromagnetic coil from failing due to excessive temperature, thereby ensuring the stability of the slurry iron removal device and having a good demagnetization effect.

[0025] The electromagnetic iron remover provided by the utility model utilizes a vibration mechanism to make the screen vibrate up and down during cleaning. It has a reasonable design, a compact structure, and a small footprint. It is easy to produce and use, can realize automatic cleaning, and adopts a high-temperature and corrosion-resistant magnetic medium net to achieve a uniform high-density magnetic field, thereby improving adsorption efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front view of the electromagnetic iron remover provided by the utility model.

[0027] Figure 2 This is a side view of the electromagnetic iron remover provided by the utility model.

[0028] Figure 3 This is a top view of the electromagnetic iron remover provided by the utility model.

[0029] Figure 4 This is a schematic diagram of the internal structure of the magnetic conductive chamber provided by the utility model.

[0030] Figure 5 for Figure 4 A is an enlarged view of the middle image.

[0031] In the figure: 1. frame; 2. main shell; 3. main shell cover; 4. coil cavity; 5. magnetic conduction chamber; 6. screen; 7. outer cover; 8. feed seat; 9. vibration motor; 10. vibration transmission screw; 11. vibration reduction connecting valve; 12. compressed air inlet; 13. plate cooler; 14. oil temperature sensor; 15. oil pump; 16. hydraulic pipe; 17. junction box; 18. air filter; 19. bolt; 20. pneumatic butterfly valve; 21. down pipe; 22 feed pipe; 23. residual material discharge pipe; 24. slag discharge pipe; 25. cleaning pipe; 26. discharge pipe; 27. electrical box; 28. fixing rod; 1-1. load-bearing step. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] See also Figure 1-5 As shown, a conductive slurry electromagnetic iron remover includes a frame 1, a main shell 2 is arranged on the frame 1, a coil cavity 4 is arranged in the main shell 2, a magnetic conductive chamber 5 is arranged in the coil cavity 4, an electromagnetic coil is arranged in the coil cavity 4 and filled with insulating oil, the magnetic conductive chamber 5 is surrounded by the electromagnetic coil, a fixing rod 28 and a screen 6 connected thereto are arranged in the magnetic conductive chamber 5, the screen 6 includes multiple layers of magnetic medium mesh stacked on top of each other, and when power is turned on, the electromagnetic coil can magnetize the screen 6 to remove iron.

[0034] Specifically, the magnetic conductive chamber 5 is located inside the electromagnetic coil in the coil cavity 4, the upper end of the magnetic conductive chamber 5 extends out of the main housing 2, and the electromagnetic coil is immersed in insulating oil.

[0035] Optionally, in some embodiments, the inner wall of the magnetic chamber 5 is provided with an outer cover 7, and the outer cover 7 is located between the inner wall of the magnetic chamber 5 and the screen 6. The outer cover 7 is connected to the bearing step 1-1 provided on the inner wall of the magnetic chamber 5, and the bearing step 1-1 is used to fix the outer cover 7.

[0036] Furthermore, the outer cover 7 is made of non-magnetic material, and may be a Teflon member or a composite structure member with a Teflon layer on the inner wall. The outer cover 7 disposed between the magnetic chamber 5 and the screen 6 can better reduce the risk of repeated friction between the screen 6 and the inner wall of the magnetic chamber 5, which may cause the magnetic particles adsorbed on the outer side of the screen 6 to fall off and generate new metal foreign matter.

[0037] Optionally, in some embodiments, a vibration mechanism connected to the top of the magnetic conductive chamber 5 is further included, the vibration mechanism includes a vibration motor 9, a vibration transmission screw 10 connected to the vibration motor 9, and a vibration reduction connection valve 11 sleeved outside the vibration transmission screw 10, and the vibration transmission screw 10 is connected to the fixed rod 28 in the magnetic conductive chamber 5. The vibration motor 9 drives the fixed rod 28 and the screen 6 fixedly connected to the fixed rod 28 to vibrate up and down through the vibration transmission screw 10, so that the magnetic particles adsorbed on the outside of the screen 6 fall down, which can realize automatic cleaning and save labor costs; the vibration reduction connection valve 11 is used to limit the vibration transmission screw 10 so that the vibration transmission screw 10 only moves up and down in the vertical direction.

[0038] Optionally, the magnetic chamber 5 is also provided with a compressed air inlet 12 connected to the interior thereof, and the compressed air inlet 12 is externally connected to compressed air. When the iron remover is cleaned, the vibrating mechanism is first used to drive the screen to vibrate to clean the screen. After cleaning to a certain extent, the screen 6 is sprayed with compressed air, which can make the magnetic particles adsorbed on the outside of the screen 6 fall off more quickly and thoroughly, thereby improving the cleaning effect and cleaning efficiency; finally, after the cleaning liquid is completely emptied, the compressed air also has the effect of spraying and drying the inner cavity.

[0039] Optionally, in some embodiments, the magnetic conductive chamber 5 is connected to a feed seat 8, one side of the feed seat 8 is connected to a cleaning pipe 25, and the other side is connected to a discharge pipe 26, and both the cleaning pipe 25 and the discharge pipe 26 are provided with a pneumatic butterfly valve 20.

[0040] Optionally, in some embodiments, a down pipe 21 is connected below the magnetic chamber 5, and the down pipe 21 is connected to a feed pipe 22, a residual material discharge pipe 23, and a slag discharge pipe 24, and a pneumatic butterfly valve 20 is provided on each of the feed pipe 22, the residual material discharge pipe 23, and the slag discharge pipe 24. The residual material discharge pipe 23 can prevent cross contamination of materials.

[0041] Optionally, in some embodiments, a cooling system is further included, the cooling system including a plate cooler 13, an oil temperature sensor 14, an oil pump 15 and a hydraulic pipe 16; one end of the oil pump 15 is connected to the plate cooler 13 through the hydraulic pipe 16, and the other end is connected to one side of the coil cavity 4 through a pipeline, and the plate cooler 13 is connected to the other side of the coil cavity 4 through a pipeline. The insulating oil in the coil cavity 4 is sucked from one side thereof into the plate cooler 13 by the oil pump 15, and the plate cooler 13 cools the insulating oil, and the cooled insulating oil flows back into the coil cavity 4 from the other side of the coil cavity 4, thereby realizing the circulation and cooling of the insulating oil in the coil cavity 4, and ensuring the normal operation of the iron remover.

[0042] Optionally, in some embodiments, a main housing cover plate 3 is provided above the main housing 2, and the main housing cover plate 3 is connected to the main housing 2 by a plurality of bolts 19, and a junction box 17 and an air filter 18 are provided on the main housing cover plate 3. The junction box 17 is used to protect and connect the wires, and the air filter 18 can prevent dust and the like from entering the interior of the main housing 2, and the volume expansion of the electromagnetic coil and the insulating oil caused by the temperature rise can be adjusted by the air filter 18.

[0043] Optionally, an electrical box 27 is also provided on the frame 1 .

[0044] The working process of the electromagnetic iron remover provided by the utility model is as follows:

[0045] When removing iron, the vibration mechanism is in the closed state, the feed pipe 22 and the discharge pipe 26 are opened, the feed pipe 22 is connected to an external pump, and the slurry is moved from bottom to top by pumping, and the electromagnetic coil is energized at the same time. When the slurry passes through the screen 6, the magnetic particles in the slurry will adhere to the screen 6. The more magnetic particles there are, the lower the pass rate of the screen 6, and the more unbalanced the pressure in the magnetic chamber 5. The pressure value is obtained through the pressure gauge located on the pump, and it is judged whether the demagnetization effect is reduced and whether the cleaning standard is met based on the pressure change.

[0046] During cleaning, if the screen 6 reaches the cleaning standard, the feeding is stopped, the feeding pipe 22 and the discharging pipe 26 are closed, and then the electromagnetic coil stops supplying power, the magnetic particles will fall into the lower pipe 21, and part of the slurry will adhere to the screen 6. Then open the cleaning pipe 25, inject the cleaning liquid into the magnetic guide chamber 5 by pumping, and then turn on the vibration motor 9 to make the screen 6 move up and down at a certain frequency, so as to realize the vibration movement of the screen 6, and then open the compressed air inlet 12, and clean it with compressed air. Then open the slag discharge pipe 24 to let the cleaning liquid flush the screen 6, and it can be cleaned after about three or more cycles.

[0047] At present, there are two ways to clean the traditional electromagnetic iron remover: one is to flush the magnetic chamber and screen with a large amount of cleaning liquid; the other is to take out the screen for manual cleaning, and then put it back in the magnetic chamber after cleaning and drying. The screen of the electromagnetic iron remover is formed by stacking multiple layers of magnetic media, and the structure is relatively compact. It takes a lot of cleaning liquid and cleaning time to clean the high-viscosity slurry attached to the screen. Generally speaking, it takes at least 150-250kg of cleaning liquid to clean the screen.

[0048] The electromagnetic iron remover provided by the utility model adopts an up-and-down vibration cleaning method, and the screen is immersed in the cleaning liquid as a whole. The slurry on the surface of the screen is directly impacted by the vibration of the cleaning liquid, so that the slurry is dissolved in the cleaning liquid. Since the cleaning liquid is a soluble liquid configured separately according to the slurry, the slurry will no longer adhere to the screen after being separated from the screen. In practical use, only two to three vibration cleanings are required, and the screen can be cleaned by auxiliary flushing several times. The amount of cleaning liquid used can save at least 50kg, which greatly reduces the cost of the cleaning liquid. At the same time, the entire cleaning time is shortened to less than 45 minutes, and the cleaning time for slurries with lower viscosity can even be shortened to less than 30 minutes. Compared with flushing cleaning for at least two hours and manual cleaning of the screen for at least half a day, this cleaning method greatly shortens the cleaning time and greatly improves the cleaning efficiency. In addition, this closed cleaning can reduce the possibility of contamination caused by the disassembly and assembly of the screen. Whether in terms of cleaning effect, cleaning time and cleaning loss, the electromagnetic iron remover provided by the utility model adopts an up-and-down vibration cleaning method that is far superior to the existing cleaning method, can realize automatic cleaning, and save labor costs.

[0049] In addition, by providing an outer cover between the screen and the inner wall of the magnetic chamber to separate the two, during operation, the risk of repeated friction between the outer side of the screen and the inner wall of the magnetic chamber causing the magnetic particles adsorbed on the outer side of the screen to fall off and new metal foreign matter to be generated can be effectively reduced. In particular, the outer cover is set to a non-magnetic material, which has the advantages of easy installation and disassembly, high cost performance, fire resistance, corrosion resistance and non-stick. The existing electromagnetic iron remover will generate a lot of heat during use, which will affect the service life of the equipment and increase the aging rate of the equipment, so the electromagnetic iron remover needs to be cooled. When the electromagnetic coil is energized, the screen will be magnetized, so that the screen adsorbs magnetic impurities in the slurry. The temperature of the electromagnetic coil rises during operation. The cooling oil can protect the electromagnetic coil from oxidation. The cooling system can circulate and cool the insulating oil in the coil cavity to avoid the electromagnetic coil from failing due to excessive temperature, thereby ensuring the stability of the slurry iron removal device and having a good demagnetization effect.

[0050] The electromagnetic iron remover provided by the utility model utilizes a vibration mechanism to make the screen vibrate up and down during cleaning. It has a reasonable design, a compact structure, and a small footprint. It is easy to produce and use, can realize automatic cleaning, and adopts a high-temperature and corrosion-resistant magnetic medium net to achieve a uniform high-density magnetic field, thereby improving adsorption efficiency and effect.

[0051] The protection scope of the present invention is not limited to the above-mentioned embodiments. Any modifications, equivalent substitutions and improvements that can be made by professionals in the field within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A conductive slurry electromagnetic iron remover, characterized in that: include: A main housing, wherein a coil cavity is provided in the main housing and the coil cavity is filled with insulating oil; A magnetic conductive chamber, the magnetic conductive chamber is arranged in the coil cavity, and a fixing rod and a screen connected to the fixing rod are arranged in the magnetic conductive chamber; An electromagnetic coil, the electromagnetic coil is arranged in the coil cavity and immersed in the insulating oil, and the magnetic conductive chamber is surrounded by the electromagnetic coil; A compressed air inlet; the compressed air inlet is connected to the interior of the magnetic conductive chamber, and the compressed air inlet is externally connected to compressed air; as well as A vibration mechanism comprises a vibration motor and a vibration transmission screw connected to the vibration motor, and the vibration transmission screw is connected to the fixing rod.

2. The conductive slurry electromagnetic iron remover according to claim 1, characterized in that: The screen comprises multiple layers of magnetic medium mesh stacked one on top of the other.

3. The conductive slurry electromagnetic iron remover according to claim 2, characterized in that: The inner wall of the magnetic conductive chamber is provided with an outer cover, the outer cover is located between the inner wall of the magnetic conductive chamber and the screen, and the outer cover is connected to a bearing step provided on the inner wall of the magnetic conductive chamber.

4. The conductive slurry electromagnetic iron remover according to claim 3, characterized in that: The outer cover is made of non-magnetic material.

5. The conductive slurry electromagnetic iron remover according to claim 1, characterized in that: The vibration mechanism is connected above the magnetic conductive chamber, and the vibration mechanism also includes a vibration-damping connection valve sleeved outside the vibration transmission screw.

6. The conductive slurry electromagnetic iron remover according to claim 1, characterized in that: The upper end of the magnetic conductive chamber extends out of the main shell body, and the magnetic conductive chamber extending out of the main shell body is connected to a feed seat, one side of the feed seat is connected to a cleaning pipe, and the other side is connected to a discharge pipe, and pneumatic butterfly valves are arranged on the cleaning pipe and the discharge pipe; a down pipe is connected to the bottom of the magnetic conductive chamber, and the down pipe is connected to a feed pipe, a residual material discharge pipe and a slag discharge pipe, and pneumatic butterfly valves are arranged on the feed pipe, the residual material discharge pipe and the slag discharge pipe.

7. The conductive slurry electromagnetic iron remover according to claim 1, characterized in that: It also includes a cooling system, which includes a plate cooler, an oil temperature sensor, an oil pump and a hydraulic pipe; one end of the oil pump is connected to the plate cooler through the hydraulic pipe, and the other end is connected to one side of the coil cavity through a pipeline, and the plate cooler is connected to the other side of the coil cavity through a pipeline.

8. The conductive slurry electromagnetic iron remover according to claim 1, characterized in that: A main housing cover is arranged above the main housing, the main housing cover is connected to the main housing through a plurality of bolts, and a junction box and an air filter are arranged on the main housing cover.

9. The conductive slurry electromagnetic iron remover according to any one of claims 1 to 8, characterized in that: It also includes a frame, and the main shell is arranged on the frame.

10. The conductive slurry electromagnetic iron remover according to claim 9, characterized in that: An electrical box is also arranged on the frame.

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