WO1995019847A1 - Epurateur electromagnetique servant a eliminer d'une huile de laminage une micropoudre ferromagnetique - Google Patents

Epurateur electromagnetique servant a eliminer d'une huile de laminage une micropoudre ferromagnetique Download PDF

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Publication number
WO1995019847A1
WO1995019847A1 PCT/CN1995/000008 CN9500008W WO9519847A1 WO 1995019847 A1 WO1995019847 A1 WO 1995019847A1 CN 9500008 W CN9500008 W CN 9500008W WO 9519847 A1 WO9519847 A1 WO 9519847A1
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Prior art keywords
rolling oil
filter box
electromagnetic
fine powder
rod
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PCT/CN1995/000008
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English (en)
French (fr)
Inventor
Lijun He
Zhengji Guo
Weichen Huang
Weilun Wang
Shaohui Yang
Haicai Huang
Dong Wang
Original Assignee
Wuhan Iron And Steel (Group) Co.
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Application filed by Wuhan Iron And Steel (Group) Co. filed Critical Wuhan Iron And Steel (Group) Co.
Publication of WO1995019847A1 publication Critical patent/WO1995019847A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B03C1/031—Component parts; Auxiliary operations
    • B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
    • B03C1/0335—Component parts; Auxiliary operations characterised by the magnetic circuit using coils

Definitions

  • Electromagnetic purification device for removing ferromagnetic fine powder in rolling oil
  • the invention relates to an electromagnetic purification device, in particular to an electromagnetic purification device for removing ferromagnetic fine powder in rolling oil. Background technique
  • rolling oil is widely used for the purpose of lubricating between rolls and strips and cooling the rolls and strips.
  • rolling oil is not only used in cold rolling production, but is also gradually extended to hot rolling production.
  • most of the triturated iron scale, rust and fine iron powder worn on the surface of the steel strip due to rolling are taken away by the rolling oil.
  • These impurities in the rolling oil will deteriorate the surface quality of the strip and greatly reduce the service life of the rolling oil.
  • Due to the high price of rolling oil most rolling mills at home and abroad are equipped with purification equipment for rolling oil.
  • the commonly used purification devices mainly include hard magnetic drum type, vacuum filter paper type and centrifugal type.
  • these devices can effectively remove coarser ferromagnetic particles in rolling oil, they have a low ability to remove ferromagnetic fine powder (such as less than 10 microns) in rolling oil, because the iron in rolling oil is very low. After magnetically adsorbing a layer of oil film, the particle size is larger, and the viscous resistance is increased accordingly. The specific gravity is correspondingly reduced to close to the specific gravity of rolling oil, so that the ferromagnetic powder can be suspended in the rolling oil stably. If a hard magnetic drum device is used, the effect of the magnetic drum on the ferromagnetic fine powder is small due to the low magnetic field strength, resulting in poor results.
  • an object of the present invention is to provide a purification device capable of effectively removing ferromagnetic fine powder in rolling oil.
  • the present invention proposes an electromagnetic purification device for removing ferromagnetic fine powder in rolling oil, which includes an electromagnetic device and a filter box.
  • the improvement is that:
  • the electromagnetic device includes two opposing magnetic poles, and the filter box is located between the two magnetic poles and is filled with a spherical body made of a magnetically conductive material.
  • the invention also proposes an electromagnetic purification device for removing ferromagnetic fine powder in rolling oil, which includes an electromagnetic device and a filter box.
  • the electromagnetic device includes two opposite magnetic poles, and the filter box Located between the two magnetic poles and filled with a rod-shaped body made of magnetically permeable material, when rolling oil flows through the filter box, under the action of a magnetic field, the ferromagnetic fine powder therein will be adsorbed on the rod-shaped body to cause rolling The oil is purified.
  • the electromagnetic device may include a magnetic circuit, and the magnetic circuit is composed of a yoke, an iron core connected to the yoke, and a magnetically permeable plate connected to the iron core.
  • the filter box may include a rolling oil inlet pipe and an outflow pipe communicating with the inside thereof, and may be divided into upper and lower parts by a partition plate with a plurality of through holes, a spherical body or A rod-shaped body is located in the upper half.
  • the device may further include a regeneration device, the regeneration device includes a hot water inlet pipe for hot water entering the filter box and a filter connected to the lower half of the filter box. The upper part of the tank is connected with the recycled sewage outflow pipe.
  • the material constituting the spheroids and rods may be steel.
  • the rod-shaped body may be disposed such that an axial direction thereof is perpendicular to a direction of a magnetic field line between the two magnetic poles and a gap between the rod-shaped bodies is less than 5 mm.
  • Fig. 1 is a schematic diagram of the structure of a purification device of the present invention.
  • Fig. 2 is a ⁇ - ⁇ sectional view of the purification device of the present invention. The best way to implement the invention
  • 1 is a yoke
  • 2 is an iron core
  • 3 ' is a coil
  • 4 is a magnetically permeable plate
  • 5 is a filter box
  • 6 is a steel ball
  • 7 is a rolled oil inlet pipe
  • 8 is a hot water inlet pipe
  • 9 It is the rolling oil outflow pipe
  • 10 is the outflow pipe of reclaimed sewage.
  • FIG. 1 and 2 the figure and the like show a first embodiment of the present invention.
  • two filter boxes with the same structure and an electromagnetic device corresponding to the two filter boxes are enclosed.
  • the iron core 2 is connected between the yoke 1 and the magnetically conductive plate 4 , and the iron core is provided with an electromagnetic coil 3
  • a filter box 5 is placed between two magnetically conductive poles 4.
  • the filter box 5 is divided into upper and lower parts by a partition plate 5a with a plurality of through holes, a rolling oil inlet pipe 7 and hot water.
  • the inlet pipe 8 is located in the lower half of the filter box 5, while the upper half is filled with magnetically conductive steel balls 6, and the rolled oil outflow pipe 9 and the regenerated sewage permanent outflow pipe 10 are also located in this section.
  • the yoke 1, the iron core 2 , the magnetically conductive plate 4 and the steel ball 6 form a magnetic circuit. After the coil is energized, a strong magnetic field is generated between the magnetically permeable plates 4. After the rolling oil enters the purification device box, it passes through the gap between the steel balls. Under the action of the strong magnetic field, the fine iron powder in the rolling oil It is adsorbed on the steel ball to achieve the purpose of purification.
  • the purification effect is related to the strength of the magnetic field and the size of the steel ball.
  • the strength of the magnetic field and the size of the steel ball should be determined according to the amount of ferromagnetic fine powder in the rolling oil, the grain size, and the amount of processing oil.
  • the average magnetic field intensity may be, for example, about 2000 Gauss.
  • the steel balls After using the purification device for a certain period of time, the steel balls will be filled with ferromagnetic powder, which will affect the treatment effect. Therefore, the purification device must be regenerated.
  • the rolling oil is first evacuated and the degreased state will be used. The hot water is sprayed into the box through the pipe 8, and the ferromagnetic powder on the steel ball is directly washed, and then the sewage is discharged from the pipe 10 to complete the regeneration of the purification device.
  • steel braces can be used instead of steel balls.
  • these steel rods can be placed, for example, with their axial direction perpendicular to the direction of the magnetic field lines, and the gap between the rods is less than 5 mm. In order to ensure that the rolling oil flows out from the pipe 9 through the gap between the steel rods through the lower oil inlet pipe 7.
  • the materials constituting the steel rod and the steel ball are not necessarily steel, and may be other magnetically permeable materials.
  • the purification device provided by the present invention may include only one filter box.
  • the upper filter box and its electromagnetic device may be removed and replaced by a yoke.
  • multiple filter boxes and their electromagnetic devices can also be juxtaposed.
  • the rolling oil is purified by the present invention.
  • the ferromagnetic fine powder in the rolling oil can be almost completely filtered. After filtering, the rolling oil has a very clean appearance without contaminated sludge. Therefore, in addition to significantly improving the surface quality of the steel strip and greatly improving the bearing life, it also saves a lot of rolling oil costs.

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  • Lubricants (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Description

用于去除轧制油中铁磁性微粉的电磁净化装置 技术领蜮
本发明涉及一种电磁净化装置， 特别是涉及一种对轧制油中铁 磁性微粉进行清除的电磁净化装置。 背景技术
在现代轧钢生产中， 广泛采用轧制油， 其目的是为了对轧辊和 带钢之间进行润滑以及对轧辊和带钢进行冷却。 目前， 不仅在冷轧 生产中呆用轧制油， 而且还逐步推广到热轧生产中。 在轧钢过程中， 附着在钢带表面上的氡化铁皮、 铁锈以及钢带因轧压而被磨损下来 的微细铁粉等， 大部分都被轧制油带走。 混于轧制油中的这些杂质 将恶化带钢的表面质量， 并使轧制油的使用寿命大大降低。 由于轧 制油价格昂贵， 因此国内外大多数轧钢厂都配置有轧制油的净化装 目前普遍釆用的净化装置主要有硬磁鼓式、 真空滤纸式和离心 式等。 这些装置虽都可以有效地去除轧制油中较粗大的铁磁性颗粒, 但对轧制油中铁磁性微粉 （如小于 1 0 微米） 的去除能力却很低， 这是因为轧制油中的铁磁性微 吸附一层油膜后粒径较大， 粘滞阻 力也随之增大， 比重相应减少至接近轧制油的比重， 使得铁磁性徼 粉可以相当稳定地悬浮在轧制油中造成的。 如果采用硬磁鼓装置， 则由于磁场强度小， 磁鼓对铁磁性微粉的吸引力小， 而导致效果欠 佳。 在霍夫曼装置中， 如选用极细孔径的滤纸又极易造成堵塞现象。 而离心装置对微细颗粒几乎无欢。 这样， 轧制油中铁磁性微粉的合 量由于不能被有效去除会随轧制油的反复使用而不断积累增多， 甚 至会集聚成油泥而恶化钢板表面质量， 加速轧机轴承的磨损并污染 工作环境， 最后导致轧制油无法使用而被迫全部更换， 造成极大的 经济损失。
因此， 本发明的目的在于提供一种能有效去除轧制油中铁磁性 微粉的净化装置。 本发明的简要说明
为了实现上述目的， 本发明提出一种用于去餘轧制油中铁磁性 微粉的电磁净化装置， 包合有电磁装置和过滤箱， 其改进在于， 所 述电磁装置包合有两个相对的磁极， 所述过滤箱位于所述两磁极之 间并充满由导磁性材料制成的球状体， 当轧制油从过滤箱中流过时, 在磁场作用下， 其中的铁磁性微粉便会被吸附在球状体上而使轧制 油得以净化。
本发明还提出一种用于去 轧制油中铁磁性微粉的电磁净化装 置， 包合有电磁装置和过滤箱， 其改进在于， 所述电磁装置包合有 两个相对的磁极， 所述过滤箱位于所述两磁极之间并充满由导磁性 材料制成的棒状体， 当轧制油从过滤箱中流过时， 在磁场作用下， 其中的铁磁性微粉便会被吸附在棒状体上而使轧制油得以净化。
而且， 在上述的装置中， 所述电磁装置中可包合有磁回路， 该 磁回路由磁轭、 与磁轭相连的铁芯及与铁芯相连的导磁板构成。
而且， 在所述装置中， 所述过滤箱可包合与其内部相通的轧制 油进口管及流出管并由一个带有多个通孔的隔扳隔成上、 下两部分， 球状体或棒状体位于所述上半部分。
而且， 在所述的装置中， 所述装置还可进一步包合有再生装置, 该再生装置包合与过滤箱下半部分相连通的用于热水进入过滤箱的 热水进口管和与过滤箱上半部分相连通的再生污水流出管。
而且， 在所述的装置中， 构成所述球状体和棒状体的材料可为 钢。
而且， 在所述的装置中， 所述棒状体可故置成其轴线方向与所 述两磁极之间磁力线方向相垂直而且棒状体之间的间隙小于 5 m m。
附图的简要说明
以下结合附图对本发明的实施例进行详细地说明。
图 1 是本发明净化装置的结构简图。
图 2 是本发明净化装置的 Π - Π剖枧图。 实现本发明的优选方式
图中， 1 是磁轭， 2 是铁芯， 3' 是线圈， 4 是导磁板， 5 是过 滤箱， 6 是钢球, 7 是轧制油进口管， 8 是热水进口管， 9 是轧制 油流出管， 1 0 是再生污水的流出管。
参见图 1 和图 2 , 该图等示出了本发明的第一个实施例。 在该 实施例中包合有两个结构相同的过滤箱及与该两个过滤箱相应的电 磁装置， 其中， 铁芯 2 连接在磁轭 1 及导磁扳 4 之间， 铁芯上装有 电磁线圈 3 以构成磁势， 过滤箱 5 放在两导磁极 4 之间， 该过滤箱 5 由一个带有许多通孔的隔板 5 a 隔成上、 下两部分， 轧制油进口 管 7 和热水进口管 8 位于过滤箱 5 的下半部分， 而其上半部分则充 满导磁性的钢球 6 , 轧制油流出管 9 和再生污永流出管 1 0 也位于 该部分中。 磁轭 1 、 铁芯 2 、 导磁扳 4 及钢球 6 形成磁回路。 线圏 通电之后在导磁板 4 之间产生强磁力场， 轧制油进入净化装置箱体 中之后通过钢球之间的间隙， 在强磁力场的作用下， 轧制油中的微 细铁粉便被吸附在钢球上， 达到净化的目的， 净化的效果与磁场强 度和钢球的大小有关。 实际生产中要根据轧制油中铁磁性微粉的敫 量、 粒度、 轧制油的处理量等情况确定磁场强度和钢球的大小。 在 本实施例中平均磁场强度例如可为 2 0 0 0 高斯左右。
本净化装置经过一定时间的使用之后， 钢球上会吸满了铁磁性 徼粉， 影响处理效果， 所以必须对净化装置进行再生处理， 处理时 先将轧制油排空， 在退磁状态下将热水经管 8 喷入箱内， 直接冲洗 钢球上的铁磁性徼粉， 然后使污水从管 1 0 中流出即可完成对本净 化装置的再生。
采用本发明对轧制油进行净化， 轧制油中的铁磁性微粉几乎能 被全部滤净， 经过滤后的轧制油外观十分清洁， 没有污染的油泥。 因此除使钢带的表面质量得到明显改善， 轴承寿命大大提髙之外， 还节省了大量的轧制油费用。
需要说明的是， 在过滤箱中可利用钢捧代替钢球， 这些钢棒在 图 2 所示结构中例如可以放置成其轴向方向与磁力线方向垂直， 而 且棒之间的间隙为小于 5 m m , 以保证轧制油从下部的油进口管 7 经过钢棒之间的间隙而从管 9 流出。
另外， 构成钢棒和钢球的材料不一定是钢， 也可以是其它导磁 性材料。
尽管在图中没有示出， 但本发明提出的净化装置可以仅包括一 个过滤箱， 例如在图 1 中， 位于上部的过滤箱及其电磁装置可以去 掉而由一磁轭代替。 类似的， 也可以同时并置多个过滤箱及其电磁 装置。 工业实用性
釆用本发明对轧制油进行净化， 轧制油中的铁磁性微粉几乎能 被全部滤净， 经过滤后'的轧制油外观十分清洁， 没有污染的油泥。 因此除使钢带的表面质量得到明显改善， 轴承寿命大大提高之外， 还节省了大量的轧制油费用。

Claims

禾' j
1 、 一种用于去除轧制油中铁磁性微粉的电磁净化装置， 包合 有电磁装置和过滤箱， 其特征在于， 所述电磁装置包合有两个相对 的磁极， 所述过滤箱位于所述两磁极之间并充满由导磁性材料制成 的球状体， 当轧制油从过滤箱中流过时， 其中的铁磁性微粉便会被 吸附在球状体上而使轧制油得以净化。
2 、 一种用于去除轧制油中铁磁性微粉的电磁净化装置， 包合 有电磁装置和过滤箱， 其特征在于， 所述电磁装置包合有两个相^ 的磁极， 所述过滤箱位于所述两磁极之间并充满由导磁性材料制成 的棒状体， 当轧制油从过滤箱中流过时， 其中的铁磁性微粉便会被 吸附在捧状体上而使轧制油得以净化。
3 、 如杈利要求 1 或 2 所述的装置， 其特征在于， 所述电磁装 置中包合有磁回路， 该磁回路由磁轭、 与磁轭相连的铁芯及与铁芯 相连的导磁扳构成。
4 、 如杈利要求 1 或 2 所述的装置， 其特征在于， 所述过滤箱 包合与其内部相连通的轧制油进口管及流出管并由一个带有多个通 孔的隔板隔成上、 下两部分， 所述球状体或棒状体位于所述上半部 分。
5 、 如扠利要求 1 或 2 所述的装置， 其特征在于， 所述装置还 进一步包合有再生装置， 该再生装置包合与过滤箱下半部分相连通 的用于热氷进入过滤箱的热水进口管和与过滤箱上半部分相连通的 再生污水流出管。
6 、 如扠利要求 1 或 2 所述的装置， 其特征在于， 构成所述球 状体和棒状体的材科为钢。
7 、 如杈利要求 2 所述的装置， 其特征在于， 所述棒状体放置 成其轴线方向与所述两磁极之间磁力线方向相垂直而且捧状体之间 的间隙小于 5 m m。
PCT/CN1995/000008 1994-01-19 1995-01-19 Epurateur electromagnetique servant a eliminer d'une huile de laminage une micropoudre ferromagnetique WO1995019847A1 (fr)

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CN94201662U CN2177529Y (zh) 1994-01-19 1994-01-19 轧制油中铁磁性微粉的电磁净化装置
CN94201662.9 1994-01-19

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