• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SU1069608A3
    申请号:SU813343296
    申请日:1981-10-15
    公开日:1984-01-23
    发明作者:Шустер Карл
    申请人:Сименс Аг (Фирма)；
    IPC主号:
    专利说明:

    2. Device by n. 1, characterized in that it is provided with a set of ferromagnetic elements installed at the output of the apparatus, corresponding to a set of ferromagnetic elements; installed at the entrance.
    3. A device according to claim 1, characterized in that the ferromagnetic elements are made in the form of pins mounted on the filter element circumferentially.
    4. A device according to claim 1, characterized in that the ferromagnetic elements are made in the form of sheets rolled up in the form of truncated cones, mounted coaxially to each other and large bases on round plates of the frame.
    5. Device on PP. 1-4, characterized in that the ferromagnetic elements are rigidly fixed with one end on the round plates of the frame.
    one
    The invention relates to the separation of magnetic particles with a size of up to 1 micron according to the principle of a high gradient magnetic separation technique from the current medium.
    The most ferromagnetic particles with a diameter of about 1 micron or weakly magnetic particles, i.e. antiferro or paramagnetic particles with a higher degree of Reparation can be filtered out of the current medium by magnetic means practically only with the help of filtering devices of the so-called high-gradient magnetic separation technique (VGM techniqueJ.
    A device for separating magnetic particles is known, comprising a filter element made in the form of a plurality of wire grids made of a ferromagnetic non-corrosive metal with a predetermined grid pitch and a wire thickness that are installed perpendicular to the longitudinal axis of the device, and a magnetic system made in .id of a coil mounted to a coaxial filtering element and a ferromagnetic tube in the form of a tube enclosing a coil with two round plates mounted on the ends of the tube . In the known device, the magnetic field is directed parallel or anti-parallel to the flow direction of the medium in the region of the filter structure and creates a magnetic induction of about 1 T. The thickness of the wires from the ferromagnetic material forming the grids are very low and less than 0.1 l Gradients the magnetic field formed on them, therefore, is very high therefore the separating device can be filtered and the MarHHTHSHpyeNttJe particles are weak. The central filtering space of a known separator in which the filtering device is located.
    an element of wire meshes is placed between two pole shoes, which are parts of a frame made of ferromagnetic material, which serves as a magnetic conductor for a magnetic field created by a magnetic coil. At the same time, the medium to be filtered, either through drilling in these pole shoes, or through gaps remaining between the pole shoes and the annular chambers, is introduced into or out of the filter space 1.
    A disadvantage of the known device is that in the case of axial supply and removal of the medium, relatively high flow rates are obtained through drilled pole shoes and non-homogeneous separation at the entrance to the filter over the cross-section of the filter. In addition, with radial inflow and outflow of the medium, turbulent motion is formed along the cross-section of the filter, which leads to an uneven separation in the filtering structure.
    The aim of the invention is to increase the separation efficiency by uniformly distributing the flow of the cleaned medium over the surface of the filter element.
    For this purpose, a device for separating magnetic particles, containing a filtering element, made in the form of a plurality of tightly adjacent to each other wire nets of ferromagnetic non-corrodiruating material, with a predetermined grid pitch and wire thickness; installed perpendicular to the longitudinal axis of the device, and the magnetic system, made in the form of a coil, mounted coaxially to the filter element and the ferromagnetic frame in the form of a pipe, encompassing the coil, with two round plates mounted on.
    the ends of the pipe are provided with a set of ferromagnetic elements installed evenly between the filter element and the ferromagnetic bed plate placed at the inlet, and their total cross-sectional area takes 1 / 4-1 / 2 of the input surface of the filter element.
    In addition, the device can be equipped with a set of ferromagnetic elements / installed at the outlet of the apparatus, corresponding to a set of ferromagnetic elements installed at the input.
    Ferromagnetic elements made in the form of pins mounted on the filter element around the circumference.
    The ferromagnetic elements can be made in the form of sheets rolled up in the form of truncated cones, mounted coaxially to each other and with large bases on round frame plates.
    Ferromagnetic elements are rigidly fixed with one end on round plates. rma
    FIG. 1 shows a separator, a general view; in fig. 2 and 3 - forms of the elements of ferromagnetic elements.
    The separation device comprises a frame body in the form of a rotational symmetrical about the vertical axis of the magnetic iron, which is composed of the tubular cylinder of the frame 1 and two plates 2 and 3 of the frame with its face sides in the form of round discs. The cylinder cylinder covers a hollow cylindrical magnetic coil 4, for example a copper solenoid, which, if necessary, can be subjected to forced cooling. The frame body and the magnetic coil 4 thus form the magnetic system of the separation device. The magnetic coil 4, enclosed in the inner space of the housing of the chassis, is axially sized such that a cylindrical and intermediate space in the form of distribution chambers 5 and 6 with a small axial extension is formed between its frontal sides and plates 2 and 3 of the chassis. The magnet coil 4 forms a magnetic field, which in the cylindrical intermediate filter space bounded by it is directed at least approximately parallel to the vertical axis and passes between the plates 2 and 3 rma. Magnetic induction field in the filter space is indicated by arrows B.
    A filter element 7 is placed in the filtering space, which is a stack of a large number of grids, so-called
    mesh circles consisting of the thinnest wires having a given grid thickness. A suitable stack contains, for example, 150 thin nets with a wire thickness of 0.067 mm and with a grid step of 0.14 mm. In this case, the grids of this stack, facing plates 2 and 3 rm, having the form of round discs, can be coarser and, for example, have a wire thickness of 0.3 mm and a grid step of 0.5 о oi. The grids consist of a non-corrosive ferromagnetic material, for example of special steel, and are installed perpendicular to the direction of the magnetic field, having a direction parallel to the vertical axis in the region of the filtering structure.
    To supply a medium containing particles to be separated into the filter element 7, there is a space in the form of a distribution chamber formed between the plate 2 of the PM and the magnetic coil 4 or the filter space. 5, which has a side entrance 8 for the medium to be cleaned. Accordingly, the upper space of the distribution chamber 6 between the magnetic coil and the plate 3 of the frame serves as a collecting channel having a side outlet 9 of the filtered medium.
    In order to ensure a uniform flow of the medium to be filtered into the filter element 7 and, in particular, in order to avoid the occurrence of flow turbulence between the frame 2 and the filter element, separate elements are provided in the form of struts 10, for example bolts of ferromagnetic material. These elements are reinforced, for example, on a 2 rm plate. The magnetic field thus advantageously binds without breaking to the filter element. 7. The total cross-sectional area of the leading and guiding magnetic field elements 10 thus overlaps at least about 1 / 4-1 / 2 of the input surface of the filter structure, while the medium input velocity into the filter structure is not too high. Further, due to the fact that the elements are distributed and mounted uniformly on the inlet surface, a fairly uniform flow with insignificant turbulence is achieved at the entrance. Thus, preventive measures are taken against clogging the filtering structure on the inlet side.
    The outlet side of the separation device, as well as the inlet side, can be equipped with elements 11, leading and guiding the magnetic field between the 3 rd plate and the filter element 7 (Fig. 1)
    The corresponding number of these elements, their installation and on the outlet side can prevent the occurrence of flow turbulence,
    In the distribution chamber 5 on the side facing the inlet 8, guides 12 can be provided, affecting the distribution of the flow. Next to the one shown in FIG. 1 by a leveling design of elements 10 and 11, guides. The magnetic field for this purpose is also suitable for the ferromagnetic elements placed between the plates 2 and 3 of the rome and the filtering element 7 to prevent turbulence on the input surface or on the corresponding output surface of the structure (Fig. 2 and 3;).
    Such elements can be installed - obliquely relative to the vertical axis (FIG. 2). At the same time, elements more distant relative to this axis may be stronger than nearby ones. This can affect the further alignment of the flow distribution of the medium entering the filter structure.
    In addition, located between the plate 2 ROM and the input surface of the filter element 7
    Ferromagnetic elements leading to a magnetic field can have not only a cylindrical shape, but also be made, for example, in the shape of a truncated cone (Fig. 3, The device works on track C1 in a uniform manner.
    The medium being cleaned through the inlet pipe 8 enters the distribution chamber 5, from where, the passage between
    0 ferromagnetic elements 10,
    enters the filtering element 7, where it is cleaned of magnetic particles and removed through the outlet 9.
    The advantages of the device are
    5 in that the medium being filtered is distributed relatively evenly across the cross section of the filter element, enters it at a low speed, P9 since entering the filter there is only a relatively short path between the individual elements leading and directing the magnetic field. In addition, using these elements, the magnetic field is directly tied to the filtering element. At the same time, comparatively long grain through pole shoes is not required, which can be done only with appropriately high costs.
    权利要求:
    Claims (5)
    [1]
    1. DEVICE FOR SEPARATION OF MAGNETIC PARTICLES, containing a filter element made in the form of a set of wire mesh tightly adjacent to each other from ferromagnetic non-corroding material, with a given mesh pitch and wire thickness set perpendicular to the longitudinal axis of the device, and a magnetic system made in the form a coil mounted coaxially to the filter element and a ferromagnetic yoke in the form of a pipe covering the coil with two round plates mounted on the ends of the pipe which, in order to increase the separation efficiency due to the uniform distribution of the flow of the medium to be cleaned over the surface of the filter element, the device is equipped with a set of ferromagnetic elements mounted evenly between the filter element and the ferromagnetic yoke plate located at the inlet, and their total cross-sectional area is 1 / 4-1 / 2 of the input surface of the filter element.
    809690G OS
    [2]
    2. The device according to η. 1, characterized in that it is equipped with a set of ferromagnetic elements installed at the output of the apparatus, corresponding to a set of ferromagnetic elements installed at the input.
    [3]
    3. The device according to π. 1, characterized in that the ferromagnetic elements are made in the form of pins mounted on the filter element around the circumference.
    [4]
    4. The device according to π. 1, characterized in that the ferromagnetic elements are made in the form of sheets folded in the form of truncated cones mounted coaxially to each other and with large bases on round yoke plates.
    [5]
    5. The device according to paragraphs. 1-4, characterized in that the ferromagnetic elements are rigidly fixed at one end on the round yoke plates.
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    引用文献:
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    法律状态:
    优先权:
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