CN116140055A

CN116140055A - High-viscosity slurry electromagnetic iron remover

Info

Publication number: CN116140055A
Application number: CN202310001334.XA
Authority: CN
Inventors: 于铁生; 吴福和; 徐茂
Original assignee: Ningbo West Magnetic Technology Development Co ltd
Current assignee: Ningbo West Magnetic Technology Development Co ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-05-23

Abstract

The invention discloses a high-viscosity slurry electromagnetic iron remover, which relates to a high-viscosity iron remover, and comprises a main shell, wherein a filter cavity is arranged in the main shell, a coil is wound on the outer ring of the filter cavity, a cleaning cavity is arranged on the filter cavity, an openable gate valve is arranged between the filter cavity and the cleaning cavity, a screen is arranged in the filter cavity and the cleaning cavity, a material inlet and a material outlet are arranged on the filter cavity, a cleaning liquid inlet is arranged on the cleaning cavity, a slag outlet is arranged on the gate valve, and an ultrasonic transducer is arranged outside the cleaning cavity. Compared with the prior art, the electromagnetic iron remover in the application adopts a double-cavity structure, so that the filtration and the cleaning are separately processed, and the filter cavity can always run stably. Meanwhile, compared with the existing cleaning means, the ultrasonic cleaning method saves at least 10-30 times of consumption of cleaning liquid and at least three-fourths of cleaning time, greatly improves the cleaning effect and integrally improves the filtering efficiency.

Description

High-viscosity slurry electromagnetic iron remover

Technical Field

The invention relates to a high-viscosity iron removing device, in particular to a double-cavity electromagnetic iron removing device.

Background

The magnetic iron remover is mainly divided into a permanent magnet iron remover and an electromagnetic iron remover, and for the magnetic iron remover, the higher the magnetic field strength is, the better the iron removing effect is. The permanent magnet iron remover mainly filters through the iron impurities adsorbed by the permanent magnet rod, the magnetic field intensity of the permanent magnet rod in the prior art is between 10000Gs and 12000Gs, and hardly exceeds 15000Gs, and the magnetic field intensity of the electromagnetic iron remover can easily reach 20000Gs and can further rise according to the requirement. For magnetic filtration of high-viscosity slurry, the high-viscosity slurry is adhered to a magnetic material (such as a permanent magnet rod of a permanent magnet iron remover or a screen of an electromagnetic iron remover) during filtration, and a filtration channel becomes smaller after the iron remover is used for a long time, so that the high-viscosity slurry adhered to the magnetic material needs to be cleaned regularly, and the screen of the electromagnetic iron remover is honeycomb-shaped (shown in fig. 1), and the permanent magnet rod is long-strip-shaped because of poor structure, so that the cleaning difficulty of the permanent magnet iron remover and the high-viscosity slurry can not be the same as that of the permanent magnet iron remover during processing of the high-viscosity slurry, and therefore the permanent magnet iron remover is generally adopted for processing the high-viscosity slurry.

Along with the crossing development of new energy industry, higher requirements are also put forward on the performance and the service life of lithium batteries, the purity of lithium electric coating is more and more harsh, and the magnetic field intensity of the permanent magnet iron remover is limited in the way of the prior art, so that the manufacturers adopt the electromagnetic iron remover capable of achieving higher magnetic field intensity to carry out iron removal operation on the high-viscosity slurry of the lithium electric coating. This creates a new problem: because the electromagnetic iron remover screen is extremely complex in structure, the cleaning liquid of a certain high-viscosity slurry can be thoroughly cleaned by repeatedly flushing the screen with the cleaning liquid of which the volume is 30 to 50 times that of the filter cavity, for example, the cleaning liquid of a lithium electric coating material is very expensive, and when the lithium electric coating material is filtered, the cleaning liquid consumed by one electromagnetic filter in one day exceeds ten thousand yuan, if the electromagnetic filter is produced in a large scale, hundreds of filters are operated simultaneously, and the cost of the optical cleaning liquid per day is astronomical number, which is an intolerable cost for enterprises. Therefore, the existing cleaning mode is manual cleaning, the work of the electromagnetic filter is stopped at a preset time or a preset amount, then the electromagnetic filter is disassembled to take out the screen, the screen is manually flushed, and the screen is put back after being cleaned. The mode of manual cleaning has greatly reduced the loss of washing liquid, but also very big reduction whole filtration efficiency to also seriously influence the filter effect: 1. the electromagnetic filter is repeatedly disassembled and assembled, so that the tightness of the filter cavity is reduced, and the loss of the sealing element and the screen is increased; 2. the working intensity of cleaning the screen is high, after a worker works for a long time, the cleaning efficiency is reduced, and the proportion of slurry residues is higher and higher; 3. the disassembly and cleaning process is time-consuming, and the working time of the electromagnetic filter is seriously influenced; 4. in the disassembly and assembly process, the filter cavity of the electromagnetic filter and the screen mesh can be polluted.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the electromagnetic iron remover for the high-viscosity slurry, which adopts a double-cavity structure, so that the filtration and the cleaning are separated, the filter cavity can always stably run, and the problems that the filter cavity is likely to be polluted due to disassembly and assembly during cleaning and the filter cavity is required to be dried in the prior art are solved. Meanwhile, compared with the existing cleaning means, the ultrasonic cleaning method saves at least 3 times to 5 times of consumption of cleaning liquid and at least three quarters of cleaning time, greatly improves the cleaning effect, integrally improves the filtering efficiency, and solves the problems that the scouring cleaning cost is too high and the manual cleaning time is too long in the existing cleaning mode.

In order to solve the technical problems, the invention is solved by the following technical scheme: the utility model provides a high viscosity thick liquids electromagnetism ironer, includes the main casing, the main casing in be provided with the filter chamber, the filter chamber outer loop have the coil, the filter chamber on be provided with the washing chamber, the filter chamber with wash and be provided with the gate valve of switching between the chamber, the filter chamber with wash and remove and be provided with the screen cloth in the intracavity, the filter chamber on be provided with material import and material export, the washing chamber on be provided with the washing liquid entry, the gate valve on be provided with the slag charge export, the washing chamber on be provided with ultrasonic transducer outward.

In the above technical scheme, preferably, the filter chamber on be provided with the riser, the riser on be provided with stretch into filter chamber internal connection the lift bar of screen cloth, the riser with the main casing between be provided with a plurality of lift cylinder.

In the above technical scheme, preferably, a lifting disc is connected above the screen, and the lifting rod is fixed on the lifting disc; when the screen is positioned at the filtering position of the filtering cavity, the material outlet is positioned between the screen and the lifting disc; when the screen is positioned at the cleaning position of the cleaning cavity, the cleaning liquid inlet is positioned between the screen and the lifting disc.

In the above technical scheme, preferably, the gate valve is connected with a gate valve cylinder for controlling the gate valve to move, a cleaning solution groove is formed in one surface of the gate valve facing the cleaning cavity, and a liquid outlet hole is formed in the inner side wall of the cleaning solution groove and connected with the slag outlet.

In the above technical solution, preferably, the ultrasonic transducer is connected with an ultrasonic controller.

In the above technical scheme, preferably, the main housing is further provided with a coil oil cooling system, and the oil cooling system comprises a circulating cooling pump and a heat exchanger.

In the above technical solution, preferably, pressure transmitters are disposed on both the material inlet and the material outlet.

In the above technical solution, preferably, the lifter is wrapped with an organ type shield.

In the above technical scheme, preferably, the bottom of the filter cavity is provided with a positioning groove, and the bottom of the screen is provided with a guide rod matched with the positioning groove.

In the above technical scheme, preferably, the cleaning cavity is further provided with a plurality of air outlets facing the screen, and the air outlets are externally connected with a blowing device.

The application has two core technical characteristics: firstly, adopt the two cavity structures in filter chamber and cleaning chamber, secondly adopt ultrasonic cleaning technique to clear up the screen cloth.

For a common electromagnetic iron remover with a single cavity, the cleaning means are roughly two types, one is to wash the filter cavity and the screen mesh in the filter cavity with a large amount of cleaning liquid; the other is to take out the screen cloth and clean it separately, and the whole filter cavity needs to be flushed after the screen cloth is cleaned and is newly placed in the filter cavity to avoid pollution during disassembly and assembly. Therefore, both the above cleaning methods require a later drying of the filter chamber. In contrast, this application adopts two cavity structures, and in fact filter chamber and the integrative sealedly of wasing the chamber, and both separate through the gate valve, filter and wash and go on in two cavitys respectively, and both do not interfere each other, and any liquid in the washing chamber can not enter into the filter chamber, and the filter chamber can not be polluted in both whole flows, unless the retooling filters, and the filter chamber need not to wash can use always.

The principle of ultrasonic cleaning is that a high-frequency oscillation signal sent by an ultrasonic generator is converted into high-frequency mechanical oscillation by a transducer and is transmitted into a medium-cleaning solvent, ultrasonic waves are radiated forwards in the cleaning liquid in the same density, so that the liquid flows to generate tens of thousands of tiny bubbles. These bubbles form and grow in the negative pressure zone where the ultrasonic waves propagate longitudinally and close rapidly in the positive pressure zone. In this process, known as the "cavitation" effect, the closure of the bubbles creates an instantaneous high pressure in excess of 1000 atmospheres, which continuously creates an instantaneous high pressure as a train of small "explosions" that continuously impact the surface of the object, causing the dirt in the surface and crevices of the object to rapidly flake off, thereby achieving the object surface cleaning objective. The screen of the electromagnetic iron remover is formed by stacking a plurality of layers of filter screens, a large amount of cleaning liquid and cleaning time are consumed in the conventional flushing and cleaning process to flush the high-viscosity slurry attached to the screen, and generally, the volume of a filter cavity is required to be 30 to 50 times of the volume of the cleaning liquid in order to flush the screen. The ultrasonic cleaning is adopted, the whole screen is soaked in the cleaning liquid, and the slurry directly impacts the surface of the screen through the vibration and explosion of the cleaning liquid, so that the slurry is dissolved into the cleaning liquid. In practical use, the screen can be cleaned up only by ultrasonic cleaning for two to three times and auxiliary flushing for several times, and the consumption of the cleaning liquid is only 10 times of the volume of the filter cavity, which is at least 3 to 5 times less than that of the conventional cleaning liquid. And the whole cleaning time is shortened to below 30 minutes, even 15 minutes, which is far shorter than the cleaning time of scouring and cleaning for at least two hours and manually cleaning the screen for at least half a day. No matter from the cleaning effect, the cleaning time and the cleaning loss are seen, the ultrasonic cleaning mode in the application is far superior to the existing cleaning mode. Meanwhile, the double-cavity structure is combined, and the automation of filtering and cleaning is truly realized. The cleaning time is greatly reduced, and meanwhile, the integral filtering effect is greatly improved, so that the method has very remarkable commercial value.

Compared with the prior art, the electromagnetic iron remover in the application adopts a double-cavity structure, so that the filtering and cleaning are separately processed, the filter cavity can always stably run, and the problems that the filter cavity is likely to be polluted due to disassembly and assembly and the filter cavity is required to be dried in the cleaning process in the prior art are solved. Meanwhile, compared with the existing cleaning means, the ultrasonic cleaning method saves at least 3 times to 5 times of consumption of cleaning liquid and at least three quarters of cleaning time, greatly improves the cleaning effect, integrally improves the filtering efficiency, and solves the problems that the scouring cleaning cost is too high and the manual cleaning time is too long in the existing cleaning mode.

Drawings

Fig. 1 is a schematic diagram of a screen structure.

Fig. 2 is a schematic front view of the present invention.

FIG. 3 is a schematic view showing a cleaning state of the present invention.

FIG. 4 is a schematic diagram of the filtering state of the present invention.

FIG. 5 is a schematic cross-sectional view of the filtration state of the present invention.

FIG. 6 is a schematic cross-sectional view of the cleaning state of the present invention.

Fig. 7 is a schematic view of the gate valve structure of the present invention.

Detailed Description

Example 1: as shown in fig. 2 to 7, an electromagnetic iron remover for high-viscosity slurry comprises a frame 1, wherein a main shell 2 and an electric box 11 are arranged on the frame, a filter cavity 21 is arranged in the main shell 2, a coil cavity 22 is arranged outside the filter cavity 2, a coil is arranged in the coil cavity 22, a cleaning cavity 23 is arranged on the filter cavity 21, and an openable gate valve 3 is arranged between the filter cavity 21 and the cleaning cavity 23. The main housing 2 is further provided with a coil oil cooling system 5, and the oil cooling system comprises a circulating cooling pump 51 and a heat exchanger 52.

The filter cavity 21 with the washing cavity 23 remove and be provided with screen cloth 6, the filter cavity on be provided with the riser 4, the riser including stretch into filter cavity 21 and washing cavity 23 internal connection screen cloth 6's lift bar 43 and fix the apron 41 at washing cavity 23 top and the movable plate 42 on apron 41, be provided with seal structure between apron 41 and the lift bar 43. A plurality of lifting cylinders 7 are arranged between the lifter 4 and the main shell 2, and the lifter 4 is controlled to move through the lifting cylinders 7. The screen cloth 6 top be connected with lifting disk 61, lifting disk 61 side be provided with the sealing washer, lifting rod 43 fixes on lifting disk 61, lifting disk 61 passes through connecting rod 62 with screen cloth 6 and is connected, connecting rod 62 link up whole screen cloth 6, the connecting rod 62 bottom is provided with guide bar 63, filter chamber 21 bottom be provided with constant head tank 64, guide bar 63 can stretch into in the constant head tank 64. The lifter 4 is wrapped with a detachable organ type shield, and the lifter 4 is protected through the organ type shield and dust is prevented from entering the lifter 4.

The filter cavity 21 is provided with a material inlet 81 and a material outlet 82, the material inlet 81 is positioned at the bottom of the filter cavity 21, and the material outlet 82 is positioned at the lateral side of the upper part of the filter cavity 21. The cleaning cavity 23 is provided with a cleaning liquid inlet 83, and the cleaning liquid inlet 83 is positioned at the side of the top of the cleaning cavity 23. The gate valve 3 is provided with a slag outlet 33. All be provided with pneumatic straight-through ball valve on material inlet 81, material outlet 82 and the washing liquid entry 83, all be provided with pressure transmitter 84 on material inlet 81, the material outlet 82, still be provided with relief valve 85 on the material inlet 81.

The cleaning cavity 23 is externally provided with an ultrasonic transducer 9, and the ultrasonic transducer 9 is connected with an ultrasonic controller. The gate valve 3 is connected with a gate valve cylinder 31 for controlling the gate valve 3 to move, a cleaning liquid groove 32 is arranged on one surface of the gate valve 3 facing the cleaning cavity 23, and a liquid outlet 34 is arranged on the inner side wall of the cleaning liquid groove 32 and connected with the slag outlet 33. If an air outlet is also provided, the air outlet is located above the inside of the washing chamber 23.

During filtration, the gate valve 3 is opened to enable the filter cavity 21 to be communicated with the cleaning cavity 23, the screen 6 is enabled to descend from the cleaning cavity 23 to the filter cavity 21 through the lifting cylinder 7, when the screen 6 is located at the filtering position of the filter cavity 21, the material outlet 82 is located between the screen 6 and the lifting disc 61, the guide rod 63 is fixed in the positioning groove 64 at this time, and the lifting disc 61 is in sealing contact with the inner side wall of the filter cavity 21 or the lifting disc 61 is in sealing contact with the inner side wall of the gate valve 3, so that the filter cavity 21 is sealed. Then the coil is electrified, then the material inlet 81 and the material outlet 82 are opened, and feeding is started, because the material moves from bottom to top, the filter cavity 21 needs to keep a certain pressure to enable the high-viscosity slurry to move, when the high-viscosity slurry passes through the screen 6, iron impurities in the high-viscosity slurry can be attached to the screen 6, the lower the passing rate of the screen 6 is, the unbalanced pressure in the filter cavity 21 is, the pressure value in the filter cavity 21 is obtained through the pressure transmitter 84 positioned at the material inlet 81 and the material outlet 82, whether the filtering effect of the screen 6 is reduced or not is judged according to the pressure change, and the cleaning standard cone is reached or not. Meanwhile, the filter cavity 21 is also provided with a pressure relief valve 85, and when an unexpected situation occurs, the pressure is relieved through the pressure relief valve 85.

During cleaning, if the screen 6 reaches the cleaning standard, the feeding is stopped, the material inlet 81 and the material outlet 82 are closed, then the coil stops supplying power, and at the moment, the high-viscosity slurry in the filter cavity 21 is either attached to the screen 6 or falls to the upper door of the material inlet 81, and the material is not pushed nearby the material outlet 82. The screen 6 is then lifted up into the washing chamber 23 by the lifting cylinder 7, and during the lifting phase of the screen 6, the high viscosity slurry on the screen 6 will only fall over the material inlet 81 and will not contaminate the material outlet 82. When the screen 6 is in the cleaning position of the cleaning chamber 23, the cleaning liquid inlet 83 is located between said screen 6 and said lifting disk 61. At this time, the gate valve 3 is closed, and the cleaning liquid groove 32 on the gate valve 3 is located just below the screen 6. Then the cleaning liquid inlet 83 is opened to inject the cleaning liquid into the cleaning cavity 23, at this time, the slag outlet 33 on the gate valve 3 is closed, the cleaning liquid is stopped being injected after the cleaning liquid submerges the whole screen 6, the ultrasonic transducer 9 is opened, and the power of the ultrasonic transducer 9 is controlled by the ultrasonic controller. Ultrasonic cleaning is performed for at least 3 minutes, preferably for 5 minutes, and then the slag outlet 33 and the cleaning liquid inlet 83 are simultaneously opened to allow the cleaning liquid to flush the screen 6, at which stage at least two cleaning liquid volumes of the cleaning chambers 23, preferably three cleaning liquid volumes of the cleaning chambers 23, are consumed. The cleaning liquid inlet 83 is then closed to allow the cleaning liquid to drain entirely from the slag outlet 33. Repeating the steps, namely firstly immersing the screen 6 into the cleaning liquid for ultrasonic cleaning, and then flushing with the cleaning liquid. After the basic three times of circulation, the screen 6 is cleaned, and if the aim of better cleaning is achieved, the screen can be circulated for 4-5 times. After the cleaning, the screen 6 may be naturally dried or dried by blowing air to the screen 6, and if the cleaning chamber 23 has an air outlet, the liquid level of the cleaning liquid is lower than the air outlet when the screen 6 is immersed. When the screen 6 is dried, the gate valve 3 is opened, the screen 6 is lowered into the filter cavity 21, and even if the cleaning cavity 23 has residual cleaning liquid, the cleaning liquid can only fall into the cleaning liquid groove 32, so that the filter cavity 21 is not polluted.

Claims

1. The utility model provides a high viscosity thick liquids electromagnetism ironer, includes the main casing, characterized by, the main casing in be provided with the filter chamber, the filter chamber outer loop around there being the coil, the filter chamber on be provided with the washing chamber, the filter chamber with wash and be provided with the gate valve of switching between the chamber, the filter chamber with wash the intracavity and remove and be provided with the screen cloth, the filter chamber on be provided with material import and material export, wash and be provided with the washing liquid entry on the chamber, the gate valve on be provided with the slag charge export, the washing chamber be provided with ultrasonic transducer outward.

2. The electromagnetic iron remover for high-viscosity slurry according to claim 1, wherein a lifter is arranged on the filter cavity, a lifting rod extending into the filter cavity and connected with the screen mesh is arranged on the lifter, and a plurality of lifting cylinders are arranged between the lifter and the main shell.

3. The electromagnetic iron remover for high-viscosity slurry according to claim 2, wherein a lifting plate is connected above the screen, and the lifting rod is fixed on the lifting plate; when the screen is positioned at the filtering position of the filtering cavity, the material outlet is positioned between the screen and the lifting disc; when the screen is positioned at the cleaning position of the cleaning cavity, the cleaning liquid inlet is positioned between the screen and the lifting disc.

4. The electromagnetic iron remover for high-viscosity slurry according to claim 1, wherein the gate valve is connected with a gate valve cylinder for controlling the gate valve to move, a cleaning liquid groove is formed in one surface of the gate valve, which faces the cleaning cavity, and a liquid outlet hole is formed in the inner side wall of the cleaning liquid groove and connected with the slag outlet.

5. The electromagnetic iron remover for high-viscosity slurry according to claim 1, wherein the ultrasonic transducer is connected with an ultrasonic controller.

6. The electromagnetic iron remover for high-viscosity slurry according to claim 1, wherein the main shell is further provided with a coil oil cooling system, and the oil cooling system comprises a circulating cooling pump and a heat exchanger.

7. A high viscosity slurry electromagnetic iron remover according to claim 1, characterized in that pressure transmitters are provided on both the material inlet and the material outlet.

8. The electromagnetic iron remover of claim 2, wherein the lifter is wrapped with an organ type shield.

9. The electromagnetic iron remover for high-viscosity slurry according to claim 2, wherein a positioning groove is formed in the bottom of the filter cavity, and a guide rod matched with the positioning groove is arranged at the bottom of the screen.

10. The electromagnetic iron remover for high-viscosity slurry according to claim 1, wherein a plurality of air outlets facing the screen mesh are further arranged in the cleaning cavity, and the air outlets are externally connected with air blowing equipment.