CN213000567U - Roller type electromagnetic filter for cold rolling emulsion - Google Patents
Roller type electromagnetic filter for cold rolling emulsion Download PDFInfo
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- CN213000567U CN213000567U CN202021373031.9U CN202021373031U CN213000567U CN 213000567 U CN213000567 U CN 213000567U CN 202021373031 U CN202021373031 U CN 202021373031U CN 213000567 U CN213000567 U CN 213000567U
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Abstract
A roller type electromagnetic filter for cold-rolled emulsion relates to the field of cold-rolled emulsion treatment, and comprises an emulsion pool, a cold-rolled emulsion tank and a cold-rolled emulsion tank, wherein the emulsion pool contains the cold-rolled emulsion; the roller is supported to be capable of rotating around the central axis of the roller, the central axis extends in the horizontal direction, a cavity is arranged in the roller, at least one electromagnet is fixed in the position, close to the wall of the roller, in the cavity, and part of the roller is immersed in the cold rolling emulsion; the power-on and power-off device is electrically connected with the electromagnet and is arranged to supply power to the electromagnet when the drum wall close to the electromagnet rotates to the lower side of the liquid level of the cold-rolled emulsion and stop supplying power to the electromagnet when the drum wall close to the electromagnet rotates to the upper side of the liquid level of the emulsion; the scraper is positioned on the upper side of the liquid surface of the cold rolling emulsion. Iron powder dispersed in the cold-rolling emulsion can be adsorbed on the outer surface of the drum wall through the drum with the electromagnet, and adsorbed substances on the outer surface of the drum wall are scraped through the scraper under the power-off state of the electromagnet.
Description
Technical Field
The utility model relates to a processing field of cold rolling emulsion, concretely relates to drum-type electromagnetic filter of cold rolling emulsion.
Background
So far, most strip cold rolling mills in the world use circulating emulsion as the process lubrication and cooling medium for the rolling process. During metal rolling, a large amount of iron powder is generated in the deformation zone by severe friction. The iron powder is partially remained on the surface of the strip steel, and most of the iron powder is remained in the emulsion. The amount of iron powder in the emulsion directly affects the surface quality of strip steel, such as roll mark, black speck, cleanness and the like, so the iron powder is one of the most important parameters for emulsion control and management. Keeping the iron powder value as low as possible is favorable for ensuring the surface quality of the strip steel and maintaining the stability of the emulsion performance. Therefore, the magnetic filter is necessary equipment for iron removal operation in a rolling emulsion circulating system.
At present, the magnetic filters adopted by a cold rolling emulsion system mainly comprise four types: horizontal magnetic rod machine, vertical magnetic rod machine, horizontal magnetic trigger and steel ball battery filter. The horizontal magnetic trigger begins to be eliminated due to the weak magnetic force of the magnetic plate and low iron removal efficiency; the steel ball electromagnetic filter, also called HIMAG magnetic filter, is imported equipment of Hitachi, Japan, and is not recommended because of insufficient iron removal efficiency, high manufacturing cost and high maintenance cost. Therefore, horizontal bar magnet machines and vertical bar magnet machines are the mainstream in the current market, and the bar magnets of the horizontal bar magnet machines and the vertical bar magnet machines are permanent magnets instead of electromagnetic.
The iron powder, rolling oil and water are scraped from the magnetic rod of the magnetic filter. Multiple tests showed that the iron powder to rolling oil to moisture ratio of the scrapings was about 20:40:40, meaning that a large amount of rolling oil was carried over. The scraped-off black mud looks sticky and is not decomposed into iron powder, rolling oil and water in a reverse direction by an effective chemical or physical method for recycling. What is troubling at present is: the black slurry has large output, and 10-30 tons of rolled 10 ten thousand tons of steel coils are produced; the environment is seriously polluted, and the emulsion is adhered everywhere in an emulsion workshop; the black mud is used as dangerous waste and needs to be paid and should be treated by a unit with security ring and qualification.
There is a need to develop a drum type electromagnetic filter for cold rolling emulsion to effectively control the iron powder content in the emulsion.
SUMMERY OF THE UTILITY MODEL
The utility model discloses above-mentioned technical problem to exist among the prior art provides a drum-type electromagnetic filter of cold rolling emulsion, can the effective control iron powder content in the emulsion.
In order to achieve the above technical object, an aspect of the embodiments of the present invention provides a roller-type electromagnetic filter for cold rolling emulsion, including:
an emulsion tank containing cold rolling emulsion;
the roller is supported to be capable of rotating around the central axis of the roller, the central axis extends in the horizontal direction, a cavity is arranged in the roller, at least one electromagnet is fixed in the position, close to the roller wall, in the cavity, and part of the roller is immersed in the cold rolling emulsion;
the power-on and power-off device is electrically connected with the electromagnet and is arranged to supply power to the electromagnet when the drum wall close to the electromagnet rotates to the lower side of the liquid level of the cold-rolling emulsion and stop supplying power to the electromagnet when the drum wall close to the electromagnet rotates to the upper side of the liquid level of the emulsion; and
and the scraping plate is positioned on the upper side of the liquid level of the cold rolling emulsion and comprises an edge which is in contact with the outer surface of the drum wall.
Further, the roller type electromagnetic filter for cold rolling emulsion also comprises:
the air knife comprises an air knife body, a roller and a cover, wherein an air outlet of the air knife body faces to the outer surface of the wall of the roller, and the air knife body and the central axis of the roller extend in the same direction;
along the rotation direction of the roller, the air knife is positioned between the intersection line of the outer surface of the roller wall and the liquid level to the highest position of the top of the roller.
Further, the power on/off device is configured to supply power to the electromagnet when the drum wall near the electromagnet rotates to the lower side of the liquid surface of the cold rolling emulsion, and to stop supplying power to the electromagnet when the drum wall near the electromagnet rotates to the upper side of the liquid surface of the emulsion and passes over the air knife position.
Further, the air knife is positioned on the upper side of the top of the roller, and the spraying direction of the air knife is inclined towards the side of the roller rotating out of the cold rolling emulsion.
Further, the scraper is positioned between the highest part of the top of the roller and the intersection line of the outer surface of the roller wall and the liquid level along the rotation direction of the roller;
the scraper is obliquely arranged, and one side close to the roller is higher than the other side far away from the roller;
the electromagnetic filter also comprises a scrapings container and a weighing sensor, wherein the scrapings container is positioned below the other side of the scraper;
the weighing sensor is connected with the scraped object container and is used for weighing the scraped object in the scraped object container.
Further, the power on/off device includes a first conductive element and a second conductive element,
two poles of a power supply are electrically connected with the first conductive element and the second conductive element respectively;
the electromagnetic filter also comprises a first carbon brush and a second carbon brush which rotate along with the roller, one end of the electromagnet is connected with the first conductive element through the first carbon brush, the second end of the electromagnet is connected with the second conductive element through the second carbon brush,
the first conductive element and/or the second conductive element has a notch, and the position of the notch corresponds to the position of the scraper contacting with the outer surface of the drum wall.
Further, the number of the electromagnets is multiple, and the electromagnets are uniformly distributed around the central axis.
The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least: the roller with the electromagnet can absorb and remove iron powder dispersed in the cold-rolling emulsion, when the roller wall close to the electromagnet rotates to the lower side of the liquid level of the cold-rolling emulsion, power is supplied to the electromagnet, and the electromagnet obtains magnetism and can absorb the iron powder in the cold-rolling emulsion. When the drum wall close to the electromagnet rotates to the upper side of the liquid level of the emulsion, the electromagnet is stopped supplying power, and adsorbed substances on the outer surface of the drum wall can be scraped through the scraper.
Further, the air knife can be used for removing liquid components in the mixture carried on the outer surface of the roller wall, so that the rolling oil and the water are recycled on one hand, and the filtered iron powder is purified on the other hand, and convenience is brought to the next step of recycling the iron powder.
The utility model discloses electromagnetic filter and filtering method can reduce the output of iron powder fatlute in a large number, improves the environment, controls the iron powder content in the cold rolling emulsion more scientifically effectively.
Drawings
FIG. 1 is a side view of a drum-type electromagnetic filter for cold rolling emulsion according to the present invention.
FIG. 2 is a front view of the roller-type electromagnetic filter for cold rolling emulsion of the present invention.
FIG. 3 is a schematic diagram of the electromagnetic on-off working principle of the roller electromagnetic filter for cold rolling emulsion of the present invention.
FIG. 4 is a flow chart of the electromagnetic filtering method of the roller type electromagnetic filter for cold rolling emulsion of the present invention.
Description of the reference numerals
1-emulsion pool; 101-an overflow port; 201-an electric motor; 202-a speed reducer; 203-a first support bearing; 204-a first conductive element; 2041-a first end; 2042-a second end; 205-a drum; 206-a rotating shaft; 207-a second conductive element; 208-a second support bearing; 301. 302, 303, 304-electromagnets; 4-air knife, 5-scraper; 6-scraped-off container, 7-weighing sensor, 801, 802, 803, 804 first carbon brush; 901. 902, 903, 904-second carbon brush; 10-power supply, AA' -central axis, 11-valve, 12-flowmeter.
Detailed Description
Other objects and advantages of the present invention will become apparent from the following explanation of the preferred embodiments of the present application.
As shown in figures 1 to 3, the roller type electromagnetic filter for cold rolling of emulsion comprises an emulsion tank 1, a roller 205, a power on/off device and a scraper 5.
The emulsion tank 1 contains cold-rolled emulsion, and the emulsion tank 1 may have an open upper port for placing the drum 205, for example. An overflow port 101 is arranged at the top of the emulsion pool 1 to stabilize the liquid level of the cold rolling emulsion. The cold rolling emulsion can flow back to the emulsion purifying tank through a pipeline.
A valve 11 can be arranged at the bottom of the emulsion pool 1, one end of the valve 11 is connected with a dirty liquid tank, and cold-rolled emulsion is provided for the emulsion pool 1 by the dirty liquid tank. A flow meter 12 can be arranged on a pipeline connecting the valve 11 and the dirty liquid tank, and the flow meter 12 can display the index of the amount of cold rolling emulsion processed by the electromagnetic filter.
The drum 205 is supported in a state rotatable about its central axis AA', which extends in a horizontal direction. Support structures may be provided on both sides of the emulsion tank 1, with which the two ends of the drum 205 are rotatably connected.
In some embodiments, the electromagnetic filter includes a motor 201, a speed reducer 202, a first support bearing 203, a shaft 206, and a second support bearing 208. The rotating shaft 206 is coaxially and fixedly connected with the roller 205, and the rotating shaft 206 and the roller 205 have the same central axis AA'. In the present embodiment, the central axis AA' extends in a horizontal direction, but may also have an angle with the horizontal plane. The roller 205 and the driving roller 205 can be supported to rotate by the rotating shaft 206. Both ends of the rotation shaft 206 extend from both ends of the drum 205, and are connected to the first support bearing 203 and the second support bearing 208, respectively. The first support bearing 203 is connected with the side wall of the emulsion tank 1 through a support structure, and the second support bearing 208 is connected with the other side wall of the emulsion tank 1 through a support structure. The output end of the motor 201 is in transmission connection with the input end of the speed reducer 202, and the output end rotating shaft 206 of the speed reducer 202 is in transmission connection. Thus, when the output of the motor 201 rotates, the drum 205 can be rotated around the central axis AA'. The first support bearing 203 and the second support bearing 208 may be, for example, a bearing with a seat, which facilitates installation.
A cavity is arranged in the roller 205, and at least one electromagnet is fixed in the cavity close to the wall of the roller. Wherein the proximity to the drum wall may also be expressed as a distance from the central axis AA'. The electromagnet is close to the drum wall, so that a stronger magnetic field can be formed at the drum wall close to the electromagnet, while a weaker magnetic field is formed at the drum wall far from the electromagnet. The number of the electromagnets can be one or more, in the embodiment, four electromagnets are provided, and the four electromagnets are uniformly distributed around the central axis AA'. The electromagnet extends in the same direction as the central axis AA' of the drum 205. Cover plates are arranged at two ends of the roller 205, and the cover plates seal the inner cavity at two ends of the roller 205, so that cold rolling emulsion is prevented from entering the cavity.
Part of the drum 205 is immersed in the cold rolling emulsion. The partial roll 205 immersed in the cold-rolled emulsion can adsorb iron powder of the cold-rolled emulsion by the magnetic force of the electromagnet.
And the power-on and power-off device is electrically connected with the electromagnet and is arranged to supply power to the electromagnet when the drum wall close to the electromagnet rotates to the lower side of the liquid level of the cold-rolled emulsion and stop supplying power to the electromagnet when the drum wall close to the electromagnet rotates to the upper side of the liquid level of the emulsion.
As shown in fig. 1, the electromagnetic filter of the present embodiment has four electromagnets 301, 302, 303, and 304. In the following description, the electromagnet 301 is taken as an example, and when the electromagnet 301 rotates clockwise along with the drum 205 and the electromagnet 301 rotates at the position of radius OB, the electromagnet 301 is energized to generate a magnetic field, and the adsorption of the iron powder in the cold rolling emulsion starts. When the electromagnet 301 continues to rotate along with the drum 205, when the drum wall close to the electromagnet rotates to the position of the radius OE (or the position of the radius OD is advanced as appropriate), the power supply to the electromagnet 301 is stopped, the electromagnet 301 is demagnetized, and the iron powder adsorbed on the outer surface of the drum wall is removed.
In order to facilitate the removal of the iron powder, the electromagnetic filter of the embodiment further comprises a scraper 5 which is positioned above the liquid level of the cold rolling emulsion, and the scraper 5 comprises an edge which is in contact with the outer surface of the drum wall. The iron powder on the outer surface of the drum wall can be scraped off by the edge of the scraper 5. Because the electromagnet loses power and demagnetizes at the moment, the iron powder is convenient to scrape.
It is emphasized that when the drum 205 is rotated out of the cold rolling emulsion, the outer surface of the drum wall carries not only the iron powder, but a mixture of rolling oil, moisture and iron powder. In order to remove the liquid components contained in the adsorbate, an air knife 4 is provided.
Specifically, the gas knife 4 extends in the same direction as the central axis AA' of the drum 205, the gas nozzle of the gas knife 4 faces the outer surface of the drum wall, and the gas knife 4 can remove liquid components in the mixture carried by the outer surface of the drum wall, so that rolling oil and water are recycled on one hand, and adsorbed iron powder is purified on the other hand, thereby facilitating the next recycling treatment of the iron powder.
In some embodiments, the mounting position of the air knife 4 may be: in the direction of rotation of the drum 205, between the intersection of the outer surface of the drum wall with the liquid surface to the top of the drum 205 (i.e., arc CD). In the above-mentioned region, it is more convenient to blow the liquid off from top to bottom by means of the action of gravity. Preferably, the air knife 4 is located at the upper side of the top of the drum 205, i.e. at position D, the spraying direction of the air knife 4 is inclined towards the side of the drum 205 rotating out of the cold rolling emulsion. In the process that the roller 205 rotates from the position C to the position D, part of the liquid falls back into the emulsion pool 1 under the action of gravity, and the residual liquid is blown off by the air knife 4 at the position D, so that the working efficiency is high.
In some embodiments, it is preferred that the power on/off means is arranged to supply power to the electromagnet when the wall of the drum in proximity to the electromagnet is rotated to the lower side of the level of the cold rolled emulsion (i.e. at position B) and to stop supplying power to the electromagnet when the wall of the drum in proximity to the electromagnet is rotated to the upper side of the level of the emulsion and past the position of the air-knives 4 (e.g. at position E). In this way, between arcs CE the electromagnet is able to maintain the magnetic force on the adsorbate, facilitating the fall of liquid back to the emulsion tank 1 between arcs CD and the blow down of liquid with the air knife 4 at position D.
Further, it is also convenient to arrange the edge of the blade 5 in contact with the outer surface of the drum wall in the area on the arc DE. That is, the squeegee 5 is located between the top highest point (position D) of the drum 205 and the intersection line (position B) of the outer surface of the drum wall and the liquid surface in the rotation direction of the drum 205.
In this embodiment, the scraper 5 is disposed obliquely, and one side close to the roller 205 is higher than the other side far from the roller 205, and the scraped objects can slide down to the other side along the upper surface of the obliquely disposed scraper 5. The electromagnetic filter also comprises a scraped object container 6 and a weighing sensor 7, wherein the scraped object container 6 is positioned below the other side of the scraper 5, and scraped objects slide into the scraped object container 6 along the upper surface of the scraper 5. A weighing cell 7 is connected to the scrapings container 6 for weighing the scrapings in the scrapings container 6.
The liquid part is measured by the flow sensor, and the scraped objects are measured by the weighing sensor 7, so that the proportion of the scraped objects can be calculated, and the efficiency of the electromagnetic filter is further obtained. The iron powder content in the cold rolling emulsion can also be known to a certain extent.
In order to realize the alternate power on and power off of the electromagnet, in the electromagnetic filter of the embodiment, the power on and power off device comprises a first conductive element 204 and a second conductive element 207. The two poles of the power supply 10 are electrically connected to the first conductive member 204 and the second conductive member 207, respectively. The electromagnetic filter further comprises a first carbon brush and a second carbon brush which rotate along with the roller 205, one end of the electromagnet is connected with the first conductive element 204 through the first carbon brush, and the second end of the electromagnet is connected with the second conductive element 207 through the second carbon brush. The first conductive element 204 and/or the second conductive element 207 have indentations in positions corresponding to the positions of the scraper 5 in contact with the outer surface of the drum wall.
Specifically, the first conductive element 204 and the second conductive element 207 may be, for example, copper rings. And current conduction is realized when the first carbon brush and the second carbon brush are in contact with the copper ring.
One end of the electromagnet 301 is electrically connected to the first carbon brush 801, and the other end is electrically connected to the second carbon brush 901. One end of the electromagnet 302 is electrically connected to the first carbon brush 802 and the other end is electrically connected to the second carbon brush 902. One end of the electromagnet 303 is electrically connected to the first carbon brush 803 and the other end is electrically connected to the second carbon brush 903. One end of the electromagnet 304 is electrically connected to the first carbon brush 804 and the other end is electrically connected to the second carbon brush 904. The first carbon brushes 801, 802, 803, 804 are arranged uniformly around the central axis AA' and can be connected to the first conductive element 204, respectively, and the first carbon brushes 801, 802, 803, 804 can rotate with the drum 205. The second carbon brushes 901, 902, 903, 904 are also arranged uniformly around the central axis AA' and can be connected to the second conductive element 207, respectively, and the second carbon brushes 901, 902, 903, 904 can also rotate with the drum 205.
In this embodiment, the first conductive element 204 has a notch, and the second conductive element 207 has a complete ring shape. The position of the notch of the first conductive element 204 corresponds to the position of the scraper 5, that is, when the electromagnet 301 rotates to the position of the scraper 5, due to the existence of the notch, the first carbon brush 801 cannot contact with the first conductive element 204, and the electromagnet 301 loses power and demagnetizes, so that the scraper 5 can scrape off adsorbed objects on the outer surface of the drum wall. The notch is formed between the first end 2041 and the second end 2042 of the first conductive element 204, and the angle of the notch is not particularly limited, and may be an angle of 60 °, 90 °, 120 °, or the like.
The utility model provides a filtering method of a roller type electromagnetic filter for cold rolling emulsion, which mainly comprises the following steps:
s2: and placing the cold-rolled emulsion in an emulsion pool 1.
S4: the part of the drum 205 is placed in the cold rolling emulsion, wherein an electromagnet is installed in the cavity of the drum 205 and is close to the drum wall of the drum 205.
S6: a rotating drum 205 for supplying power to the electromagnet when the drum wall adjacent to the electromagnet rotates to the lower side of the liquid level of the cold rolling emulsion; when the wall of the roller close to the electromagnet rotates to the upper side of the liquid level of the emulsion, the electromagnet is stopped to supply power;
s8: and scraping adsorbed substances on the outer surface of the drum wall by using a scraper, wherein the scraper 5 is arranged on the upper side of the liquid level of the cold rolling emulsion.
The roller 205 with the electromagnet can absorb and remove iron powder dispersed in the cold-rolling emulsion, when the roller wall close to the electromagnet rotates to the lower side of the liquid level of the cold-rolling emulsion, power is supplied to the electromagnet, the electromagnet is magnetized, and the iron powder in the cold-rolling emulsion can be absorbed. When the drum wall close to the electromagnet rotates to the upper side of the liquid level of the emulsion, power supply to the electromagnet is stopped, and the electromagnet is demagnetized, so that adsorbed substances on the outer surface of the drum wall can be scraped by the scraper 5.
In addition, in the filtering method of the present embodiment, in order to adsorb submicron ultrafine iron powder dispersed in the cold rolling emulsion, the magnetic induction strength of up to 11000 gauss is used and can be adjusted to be between 2800 and 11000 gauss by adjusting the current of the electromagnetic coil in order to improve the efficiency of adsorbing the iron powder.
In some embodiments, the step of scraping off the adsorbate on the outer surface of the drum wall by using a scraper, wherein the scraper 5 is arranged on the upper side of the liquid surface of the cold rolling emulsion before the step S8, further comprises the following steps:
s7: high pressure gas is used to blow off liquid from the outer surface of the drum wall, wherein the electromagnet is kept energized before passing the high pressure gas.
The air knife 4 can remove liquid components in the mixture carried on the outer surface of the roller wall, so that the rolling oil and the water are recycled on one hand, and the filtered iron powder is purified on the other hand, thereby providing convenience for the next step of recycling the iron powder.
In some embodiments, the step S8 of scraping off the adsorbate on the outer surface of the drum wall by using the scraper 5, wherein the scraper 5 is disposed on the upper side of the liquid surface of the cold rolling emulsion, further comprises the following steps:
s9: the scrapings were weighed.
The cold-rolled emulsion is measured through the flow sensor, and the scraped objects are measured through the weighing sensor 7, so that the proportion of the scraped objects can be calculated, the efficiency of the electromagnetic filter is obtained, and the iron powder content parameters in the cold-rolled emulsion can be known to a certain extent.
The apparatus of the present application has been described in detail with reference to the preferred embodiments thereof, however, it should be noted that those skilled in the art can make modifications, alterations and adaptations based on the above disclosure without departing from the spirit of the present application. The present application includes the specific embodiments described above and any equivalents thereof.
Claims (7)
1. A roller type electromagnetic filter for cold rolling emulsion is characterized by comprising:
an emulsion tank containing cold rolling emulsion;
the roller is supported to be capable of rotating around the central axis of the roller, the central axis extends in the horizontal direction, a cavity is arranged in the roller, at least one electromagnet is fixed in the position, close to the roller wall, in the cavity, and part of the roller is immersed in the cold rolling emulsion;
the power-on and power-off device is electrically connected with the electromagnet and is arranged to supply power to the electromagnet when the drum wall close to the electromagnet rotates to the lower side of the liquid level of the cold-rolling emulsion and stop supplying power to the electromagnet when the drum wall close to the electromagnet rotates to the upper side of the liquid level of the emulsion; and
and the scraping plate is positioned on the upper side of the liquid level of the cold rolling emulsion and comprises an edge which is in contact with the outer surface of the drum wall.
2. A roller-type electromagnetic filter for cold rolling an emulsion according to claim 1,
the roller type electromagnetic filter for the cold rolling emulsion further comprises:
the air knife comprises an air knife body, a roller and a cover, wherein an air outlet of the air knife body faces to the outer surface of the wall of the roller, and the air knife body and the central axis of the roller extend in the same direction;
along the rotation direction of the roller, the air knife is positioned between the intersection line of the outer surface of the roller wall and the liquid level to the highest position of the top of the roller.
3. A roller-type electromagnetic filter for cold rolling an emulsion according to claim 2,
the power-on and power-off device is arranged to supply power to the electromagnet when the drum wall close to the electromagnet rotates to the lower side of the liquid surface of the cold-rolled emulsion, and stop supplying power to the electromagnet when the drum wall close to the electromagnet rotates to the upper side of the liquid surface of the emulsion and passes over the air knife position.
4. A drum-type electromagnetic filter for cold rolling emulsion as set forth in claim 2, wherein said air knife is positioned at an upper side of a top of said drum, and a spraying direction of said air knife is inclined toward a side of said drum rotated out from said cold rolling emulsion.
5. A roller-type electromagnetic filter for cold rolling an emulsion according to claim 1,
the scraper is positioned between the highest part of the top of the roller and the intersection line of the outer surface of the roller wall and the liquid level along the rotation direction of the roller;
the scraper is obliquely arranged, and one side close to the roller is higher than the other side far away from the roller;
the electromagnetic filter also comprises a scrapings container and a weighing sensor, wherein the scrapings container is positioned below the other side of the scraper;
the weighing sensor is connected with the scraped object container and is used for weighing the scraped object in the scraped object container.
6. A roller-type electromagnetic filter for cold rolling an emulsion according to any one of claims 1 to 5,
the power on/off device comprises a first conductive element and a second conductive element,
two poles of a power supply are electrically connected with the first conductive element and the second conductive element respectively;
the electromagnetic filter also comprises a first carbon brush and a second carbon brush which rotate along with the roller, one end of the electromagnet is connected with the first conductive element through the first carbon brush, the second end of the electromagnet is connected with the second conductive element through the second carbon brush,
the first conductive element and/or the second conductive element has a notch, and the position of the notch corresponds to the position of the scraper contacting with the outer surface of the drum wall.
7. A roller-type electromagnetic filter for cold rolling an emulsion according to claim 1,
the number of the electromagnets is multiple, and the electromagnets are uniformly distributed around the central axis.
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| CN202021373031.9U CN213000567U (en) | 2020-07-14 | 2020-07-14 | Roller type electromagnetic filter for cold rolling emulsion |
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| CN202021373031.9U CN213000567U (en) | 2020-07-14 | 2020-07-14 | Roller type electromagnetic filter for cold rolling emulsion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841127A (en) * | 2020-07-14 | 2020-10-30 | 崔贞子 | Roller type electromagnetic filter for cold rolling emulsion and filtering method |
| CN113908932A (en) * | 2021-09-22 | 2022-01-11 | 浙江工业大学 | Method and device for continuously refining and grading magnetic powder |
-
2020
- 2020-07-14 CN CN202021373031.9U patent/CN213000567U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841127A (en) * | 2020-07-14 | 2020-10-30 | 崔贞子 | Roller type electromagnetic filter for cold rolling emulsion and filtering method |
| CN113908932A (en) * | 2021-09-22 | 2022-01-11 | 浙江工业大学 | Method and device for continuously refining and grading magnetic powder |
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