JP2006247488A - Foreign matter removal apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foreign matter removal apparatus efficiently removing the foreign matter in a flowing substance containing the foreign matter and having the compact whole structure. <P>SOLUTION: The foreign matter removal apparatus 1 comprises an apparatus in which a flat part 10 opposed to a permanent magnet unit 8 is formed on a part of a flat plate in a case body 2 having an introduction port 5 and a discharge port 6 of the flowing substance and a flowing substance transferring passage 7. Efficient foreign matter removal is performed when the flowing substance passes between the flat part 10 and the permanent magnet unit 8. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a foreign matter removing apparatus having a compact structure for removing foreign matters contained in a fluid such as gas, liquid, powder, or granules.

  Various fluids such as beverages, various foods, chemicals, spices, seasonings, various plastic raw materials, pigments, fertilizers, etc., such as various gases, liquids, powders, and granules, have various processing and manufacturing processes. Foreign matter may be mixed in. For example, various facilities are used in the manufacturing and processing steps, but it is difficult to completely deny the possibility that a part of the apparatus is mixed due to damage or the like. In recent years, countermeasures against contamination by foreign substances have become extremely important from the viewpoint of product liability.

  In the manufacturing process of various products, various apparatuses are used and various transportations are performed. Equipment used for various types of processing and transportation is often composed mainly of metals, and the contamination of these foreign objects is completely eliminated by aging of metals and various impacts. It is impossible and impractical. No matter what kind of management is required for completeness, it is not possible to eliminate all foreign substances.

  Conventionally, a metal foreign matter removing apparatus used in general has a magnet module in a foreign matter removing portion having an entrance opening and an exit opening for allowing gas, liquid, powder, granules and the like to pass therethrough. In many cases, a contact structure is used. Many of the materials constituting production facilities are iron-based, and the foreign substances are often magnetic. In such a mixed foreign matter, a magnetic foreign matter removing unit is formed in contact with a strong permanent magnet module, the magnetic foreign matter removing unit adsorbs the magnetic foreign matter, and the gas, liquid, powder and particles It is possible to remove magnetic foreign matters mixed in the like.

On the other hand, various foreign matter removing devices for removing this foreign matter have been conventionally used. For example, “Patent Document 1” and “Patent Document 2” can be cited as known techniques.
JP 2003-2111022 (FIG. 1) JP-A-8-290076 (FIG. 1)

  The “magnetic foreign matter removing method and apparatus” of “Patent Document 1” arranges a plurality of bar magnet-like magnetic bodies in a cylindrical chamber that forms an inlet and an outlet of a target substance in the upper and lower sides, and the magnetic body. It consists of a built-in air injection pipe that injects and removes the attached target substance. Further, the “magnetic body removing device” disclosed in “Patent Document 2” is a mechanism section in which a permanent magnet unit body is disposed at right angles to the flow direction of a fluid in a container body having an inlet and an outlet, and the adsorbed magnetic body is taken out to the outside. It consists of what provides.

  As disclosed in “Patent Document 1” and “Patent Document 2”, most of the conventional foreign matter removing devices arrange magnetic materials so as to intersect with the flow direction of the fluid, and permanent magnets are provided in the fluid transfer passage. There is nothing that forms a passage surface or the like parallel to the unit. In other words, a flat permanent magnet unit having an appropriate length (area) is disposed along the direction of the fluid, and a flat passage having dimensions related to the length (area) of the permanent magnet unit is provided in the vicinity of the permanent magnet unit. There has been no foreign matter removing apparatus having a structure for forming a road surface and improving the foreign matter removing efficiency.

  The present invention has been invented in view of the above circumstances, and an object of the present invention is to provide a foreign matter removing apparatus that is compact as a whole and can improve the efficiency of removing foreign matter.

  In order to achieve the above-mentioned object, the present invention is characterized in that an inlet for introducing a fluid containing magnetic foreign matter is introduced, and an outlet for discharging the fluid from which the foreign matter has been removed. A fluid transfer passage communicating between the introduction port and the discharge port, a storage portion for storing a flat permanent magnet unit having a length a that removes the foreign matter, and the introduction port, the discharge port, and the fluid transfer A foreign matter removing apparatus having a case main body having a passage and a storage portion formed therein, wherein the apparatus is configured to confront a flat portion having a length b in the fluid transfer passage with a distance d from the permanent magnet unit. It forms in the position to do.

  According to a second aspect of the present invention, the length b of the flat portion is substantially the same as the length a of the magnetic body, and the distance d is a function of the strength of the magnetic field generated from the permanent magnet unit. It is characterized by being shorter than the range.

  According to a third aspect of the present invention, the flat portion of the case body is formed on a bottom surface of a concave groove that is bent downward from outer surfaces of the introduction port and the discharge port.

  According to a fourth aspect of the present invention, a permanent magnet unit or a soft magnetic unit is mounted on the bottom surface of the concave groove.

  According to the first aspect of the present invention, the fluid transfer is performed by disposing the fluid transfer passage having the flat portion arranged at an appropriate distance from the flat permanent magnet unit in the case body. Adsorption of foreign matter (magnetic material) in the fluid passing through the passage is reliably performed, and the removal efficiency can be improved. In addition, the introduction port, the discharge port, the fluid transfer passage, and the storage unit for the permanent magnet unit are arranged in the case body, and the overall structure is compact.

  According to the invention of claim 2 of the present invention, it is possible to efficiently remove foreign matters without waste by specifying the size of the flat portion and the distance from the permanent magnet unit.

  According to the invention of claim 3 of the present invention, since the flat portion is formed at the bottom portion of the concave groove of the case body, it is formed in a relatively accurate shape. Moreover, light weight can be achieved by forming a concave groove in the case body.

  According to the invention of claim 4 of the present invention, the permanent magnet unit or the soft magnetic body unit is mounted on the bottom surface portion, thereby strengthening or rectifying the magnetic field generated from the permanent magnet unit provided in the storage portion. And the magnetic field can be effectively utilized to the maximum.

  Hereinafter, embodiments of the foreign matter removing apparatus of the present invention will be described in detail with reference to the drawings. 1 to 3 are drawings showing a schematic structure of a foreign matter removing apparatus according to the present invention. The foreign matter removing apparatus 1 includes a compact structure case main body 2 composed of an upper case 3 and a lower case 4, an introduction port 5, a discharge port 6, a fluid transfer passage 7 and a permanent magnet unit 8 formed and disposed therein. Consists of.

  The upper case 3 forms an inlet 5 for introducing the fluid, an outlet 6 for discharging the fluid from which foreign substances have been removed, and a fluid transfer passage 7 connected to the inlet 5 and the outlet 6. The lower opening 9 is circular in this example. In addition, the introduction port 5 and the discharge port 6 are set to the upper position side so as to face each other, and the fluid transfer passage 7 includes an inclined passage 7 a communicating with the introduction port 5 and the discharge port 6 and a flat passage 7 b on the opening 9 side. The flat portion 10 is formed in the flat passage 7b. Note that the portion of the flat portion 10 in the direction perpendicular to the drawing is connected to the inner wall side of the opening 9 as shown in FIG. A detailed structure on the upper surface side of the upper case 3 will be described with reference to FIGS. As described above, the introduction port 5 and the discharge port 6 are formed at substantially the same level, and the outer surfaces thereof are at substantially the same level. On the other hand, a portion between the introduction port 5 and the discharge port 6 is greatly bent to form a concave groove 14. The bottom surface 15 of the concave groove 14 corresponds to the outer surface of the flat portion 10 of the flat passage 7b. As described above, the flat portion 10 is formed in an accurate shape when the upper case 3 is formed.

  As shown in FIG. 1, the lower case 4 is a dish-shaped member that is fitted into the opening 9 of the upper case 3 and has a flange portion 4 a, and a storage portion 11 is recessed on the bottom surface side. Note that a flat permanent magnet unit 8 is accommodated in the accommodating portion 11. The length (area) of the permanent magnet unit 8 along the fluid traveling direction is the dimension a. The permanent magnet unit 8 and the flat portion 10 are arranged with a distance d therebetween.

  FIG. 4 is a schematic diagram showing the shape and positional relationship between the flat portion 10 and the permanent magnet unit 8 of the foreign matter removing apparatus 1 of the present invention. As described above, the flat portion 10 of the fluid transfer passage 7 has a shape of length b along the flow direction of the fluid. On the other hand, the permanent magnet unit 8 is disposed at a position separated from the flat portion 10 by a distance d, and the length of the fluid in the flow direction is b. In addition, although the suitable dimension is determined according to the magnitude | size of the foreign material removal apparatus 1 about length a, b, the length b of the flat part 10 consists of a dimension substantially the same as the length a of the permanent magnet unit 8. FIG. . This is due to the following reason. The fluid introduced from the inlet 5 into the case body 4 proceeds along the inclination of the inclined passage 7a and flows along the surface of the permanent magnet unit 8 in the vicinity of the position of the flat passage 7b. 8 is in a state of being easily adsorbed. In this state, when the length b of the flat portion 10 is shorter than the length a of the permanent magnet unit 8, foreign matter cannot be removed by sufficiently effectively using the magnetic field generated from the permanent magnet unit 8. . That is, among the magnetic fields generated from the permanent magnet unit 8, the parallel portions of the flat portions 10 are not formed at both end portions of the permanent magnet unit 8. This is because a fluid or the like does not always flow. On the other hand, when the length b of the flat portion 10 is longer than the length a of the permanent magnet unit 8, the magnetic field generated from the permanent magnet unit 8 cannot be sufficiently effectively used to remove foreign matter. That is, since the length of the flat portion 10 is longer than the region of the magnetic field generated from the permanent magnet unit 8, it becomes difficult for a person to obtain a sufficiently strong magnetic field over the entire region of the flat portion 10. This is because the magnetic field generated from the permanent magnet unit 8 may not be used to the maximum when the body flows. As described above, the length b of the flat portion 10 needs to be set to an extent substantially corresponding to the length a of the permanent magnet unit 8 in order to make maximum use of the magnetic field generated from the permanent magnet unit 8. .

  On the other hand, the distance (distance) d between the flat portion 10 and the permanent magnet unit 8 is not arbitrary, but is within the following limits. That is, a magnetic field is formed from the permanent magnet unit 8 toward the flat portion 10 side. This magnetic field strength range is a place where foreign matter adsorbability is present. Therefore, this distance d must be at least within the operating range of the magnetic field strength, and is desirably as small as possible. As an example, the distance d is about ½ of the magnetic field strength.

  Next, the foreign matter removing action of the foreign matter removing apparatus 1 of the present invention will be described. A fluid containing a foreign substance (magnetic material) is introduced into the case body 4 from the introduction port 5, descends the inclined passage 7 a, and goes around the flat passage 7 b. Here, the fluid travels in parallel along the surface of the permanent magnet unit 8 in a relatively narrow passage formed by the permanent magnet unit 8 and the flat portion 10. The inside of this passage is a range in which the magnetic force of the permanent magnet unit 8 is acting almost evenly, and foreign matter in the fluid is effectively attracted to the permanent magnet unit 8 side. The fluid from which foreign matter has been removed in this range rises up the inclined passage 7 a and is discharged from the discharge port 6.

  As the foreign matter removing device 1 is used for a long period of time, the magnetic material is gradually accumulated on the surface of the permanent magnet unit 8. In this case, the band 12 is removed, the connection between the upper case 3 and the lower case 4 is released, and the lower case 4 is removed by the handle 13 and the foreign matter on the stored permanent magnet unit 8 is removed.

  FIG. 5 shows another embodiment of the foreign matter removing apparatus of the present invention. In the first embodiment, nothing is mounted on the bottom surface 15 that contacts the outer surface of the flat portion 10, but in this embodiment, a permanent magnet unit or a soft magnetic body unit 16 is mounted on the bottom surface 15. By mounting this, the magnetic field generated by the permanent magnet unit 8 can be strengthened or rectified, and the effect that the magnetic field can be effectively utilized to the maximum can be increased.

  Although the foreign substance removal apparatus 1 of this invention consists of the said structure, it is not limited to the thing of the above content. Further, although the description of the shape and the detailed structure of the permanent magnet unit 8 being used is omitted here, various forms are applied. Further, the external shape of the case body 4 is not limited to that disclosed in FIG.

Industrial applicability

  The foreign matter removing apparatus of the present invention is applied to all fluids such as gas, fluid, and powder that flow in a form containing foreign matter (magnetic material), and its use range is wide.

Sectional drawing which shows the whole foreign substance removal apparatus structure of this invention. The bottom view of A arrow of FIG. FIG. 2 is a side sectional view of FIG. 1. The typical fragmentary sectional view for demonstrating the relevant dimension of the principal part of the foreign material removal apparatus of this invention. Sectional drawing for demonstrating another Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Foreign substance removal apparatus 2 Case main body 3 Upper case 4 Lower case 5 Inlet port 6 Outlet port 7 Fluid transfer path 7a Inclined path 7b Flat path 8 Permanent magnet unit 9 Opening part 10 Flat part 11 Storage part 12 Band 13 Handle 14 Concave groove 15 Bottom 16 Permanent magnet unit or soft magnetic unit

Claims (4)

  An inlet for introducing a fluid containing magnetic foreign matter, an outlet for discharging the fluid from which the foreign matter has been removed, a fluid transfer passage communicating between the inlet and the outlet, and the foreign matter A foreign matter removing device having a storage portion for storing a permanent magnet unit having a flat plate shape and a length a, and a case body in which the introduction port, the discharge port, the fluid transfer passage and the storage portion are formed. The apparatus forms a flat portion having a length b in the fluid transfer passage at a position facing the permanent magnet unit via a distance d.   The length b of the flat portion is substantially the same as the length a of the magnetic body, and the distance d is shorter than the operating range of the strength of the magnetic field generated from the permanent magnet unit. Item 12. A foreign matter removing apparatus according to Item 1.   The foreign matter removing apparatus according to claim 1, wherein the flat portion of the case body is formed on a bottom surface of a concave groove that is bent downward from outer surfaces of the introduction port and the discharge port. .   The foreign matter removing apparatus according to claim 4, wherein a permanent magnet unit or a soft magnetic body unit is mounted on the bottom surface of the concave groove.

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