JP4953042B2 - Magnetic foreign material removal device - Google Patents

Description

  The present invention relates to a magnetic foreign matter removing apparatus used for separating and removing magnetic foreign matters contained in a processing target such as gas, liquid, and powder.

  Various metals, such as beverages, various foods, chemicals, spices, seasonings, various plastic raw materials, pigments, fertilizers, etc., in various processing, manufacturing processes, etc. There is a possibility that foreign matter such as For example, in the manufacturing and processing steps, metal wear powder of equipment such as screw feeders, rotary valves, and transport pipes, and broken pieces such as mixers, slicers, cutters, shredders, and choppers are considered. In recent years, in fields related to high technology such as semiconductor manufacturing factories, there has been an increasing demand for removing ultrafine wear powder and broken pieces generated from various facilities.

  Since many of the various facilities are made of metal parts, it is difficult to completely avoid contamination of metal foreign matters by the processing using the various facilities as described above. In general, since many facilities are often made of iron or stainless steel, metal foreign matters that are likely to be mixed are often magnetic metal foreign matters.

  Conventionally, metal foreign matter removing devices are generally used in a magnetic foreign matter removing chamber having an upper opening and a lower opening for allowing gas, liquid, powder, particles and the like to pass therethrough. The structure is equipped with. In order to remove magnetic foreign substances contained in various powders using this, various gases, liquids, powders or granules are taken into the magnetic foreign substance removal chamber through the upper opening, and magnetic foreign substances are included. After passing through the removal chamber, it is taken out from the lower opening. In the process of passing various gases, liquids, powders, granules, etc. through the magnetic foreign matter removal chamber, the magnetic foreign matter is adsorbed by the magnet module installed in the magnetic foreign matter removal chamber, The mixed magnetic foreign matter can be removed.

  In order to remove magnetic foreign matter, a bar magnet that combines multiple magnets is placed in a flow of gas, liquid, powder, particles, etc., and magnetic foreign matters are attracted magnetically and removed. What to do is known.

The magnetic foreign matter magnetically attracted to the bar magnet must be periodically removed and cleaned in order to maintain the foreign matter removing function. Conventionally, the magnetic foreign matter is adsorbed periodically or wiped with a rag or the like, cleaned with an adhesive tape, or removed with compressed air. There have also been applications for mechanisms for automating removal and cleaning.
Japanese Patent Laid-Open No. 2002-113386 (Section 2-4, FIG. 1-9)

  Easily and reliably remove and clean the adsorbed magnetic foreign matter in an apparatus for adsorbing and removing magnetic foreign matter by installing a magnetic foreign matter removal module that combines one or more bar magnets inside the magnetic foreign matter removal chamber In order to perform cleaning, it is necessary to make the magnetic foreign matter removing module separable from the magnetic foreign matter removing chamber.

  In the magnetic foreign matter removing apparatus, the permanent magnet is inserted into the insertion / removal hole formed on the path surface through which gas, liquid, powder, particles, etc. flow, and the inner surface portion that forms the transport path for the powder described above Since the magnetic foreign matter removing module attached to the unit is unitized, it is possible to easily perform processing such as cleaning. However, a part of the powder or the like described above accumulates in a slight gap formed between the inner surface of the transport path for the powder or the like and the magnetic foreign substance removal module. When such a state occurs, it is assumed that it is difficult to easily remove the module in the operation of taking out the magnetic foreign matter removing module for cleaning.

  When taking out the magnetic foreign substance removal module in a state where a part of the powder etc. is sandwiched in the gap between the inner surface of the transportation path such as gas, liquid, powder and granules and the magnetic foreign substance removal module, It is conceivable that a large force is applied between the magnetic foreign substance removal module and the fluid transport path inner surface. In such a case, there is a risk that foreign matters may be generated due to rubbing or scraping in a metal portion such as stainless steel constituting the fluid transport path and the magnetic foreign matter removing module.

  In order to eliminate the gap between the inner surface of the transport path for gas, liquid, powder, particles, etc. and the magnetic foreign substance removal module, the inner surface of the transport path for powder etc. and the magnetic foreign substance removal module are manufactured with extremely high dimensional accuracy. It is conceivable to fill the gap, but such a device is assumed to be extremely expensive. Further, in the operation of the powder transportation path and the magnetic foreign substance removal module, it is considered that it is difficult to manufacture the apparatus substantially due to a change in dimensions due to a change in state such as a change in temperature. It is done. However, it seems almost impossible to manufacture the inner surface of the transportation path such as the powder and the magnetic foreign matter removing module with extremely high dimensional accuracy and to fill the gap as a practical technique.

  FIG. 6 shows an example of a conventional magnetic foreign matter removing apparatus. This magnetic foreign matter removing apparatus 100 is provided with a magnetic foreign matter removing module 120 having a bar magnet 121 in a magnetic foreign matter removing chamber 110, on a support member 46 fixed to the inner surface of the magnetic foreign matter removing chamber 110. And a magnetic foreign matter removing module 120 mounted thereon. Although it is possible to remove the magnetic foreign matter by this conventional technique, in this apparatus, the object to be treated enters the gap 101 between the inner wall surface 140 and the magnetic foreign matter removal module 120, and the magnetic foreign matter removal module 120 is installed. There was a problem that could not be taken out.

  The present invention has been invented in view of the above circumstances, prevents entry of gas, liquid, powder, etc. into gaps, improves the removal efficiency of magnetic foreign matter, and attaches / detaches the magnetic foreign matter removal module. It is an object of the present invention to provide a magnetic foreign matter removing apparatus that facilitates maintenance and facilitates maintenance.

  In order to achieve the above object, the present invention provides a removal apparatus for removing magnetic foreign substances contained in a processing object such as gas, liquid, powder, etc. The apparatus comprises an inlet for the processing object, a magnetic foreign matter removal chamber connected to the inlet, and a discharge port connected to the inlet, and the magnetic foreign matter removal chamber is detachably attached to the removal chamber. A magnetic foreign matter removing module to be attached and a support portion for supporting the magnetic foreign matter removing module in a suspended manner are provided, and the magnetic foreign matter removing module has a frame-like frame and a bar magnet attached to the frame. The frame is formed with support arms projecting upward on both side surfaces thereof, and the upper part of the side surface is bent at the projecting end of the support arm, and the support portion is formed on the inner wall surface of the magnetic foreign matter removal chamber. Another sticking to A contact surface with which the upper portion of the side surface abuts is formed on the upper surface of the block body, and the upper portion of the side surface and the contact surface are in intimate contact with each other. The surface is formed at a higher position (upper part) than the position of the center of gravity of the magnetic foreign matter removing module.

  According to the present invention, the magnetic foreign matter removing module for removing the magnetic foreign matter from gas, liquid, powder, particles and the like is supported by the support portion and mounted in a suspended state. Therefore, a gap is formed between the inner wall of the magnetic contaminant removal chamber and the side surface of the magnetic contaminant removal module so that gas, liquid, powder, particles, etc. transferred to the magnetic contaminant removal chamber are deposited. Therefore, the magnetic foreign matter removing module can be easily removed. Thereby, it becomes possible to easily perform maintenance of the magnetic foreign matter removing apparatus.

  Further, since the support position of the magnetic foreign matter removal module is above the center of gravity of the magnetic foreign matter removal module, a bar magnet unit formed substantially parallel to a surface perpendicular to the flow direction of the powder or the like is provided. It can be held extremely stably.

  The magnetic foreign matter removing apparatus constructed in accordance with the present invention is not limited by the formation method or material of the support portion formed in the magnetic foreign matter removal chamber, and the magnetic foreign matter removal module is attached to the support portion. The magnetic foreign object removal module is supported above the center of gravity of the magnetic foreign object removal module, and the processing method, manufacturing process, material, etc. of the magnetic foreign object removal module and magnetic foreign object removal It is not limited by the processing method, manufacturing process, material, etc. of the interior.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a front view showing a part of a magnetic foreign matter removing apparatus according to an embodiment of the present invention.
The magnetic foreign matter removing apparatus 1 includes an introduction port 11 into which an object to be treated such as gas, liquid, powder and particles containing magnetic foreign matter is introduced, and the magnetic foreign matter from the powder and the like introduced from the introduction port 11. And a pedestal 31 that supports the magnetic foreign material removal apparatus 1 and includes a discharge port 12 through which the powder and the like that have passed through the magnetic foreign material removal chamber 10 are discharged. The magnetic foreign matter removal chamber 10 is provided with a door portion 17 that is openably and closably attached via a hinge 18. By opening the door portion 17, the internal space of the magnetic foreign matter removal chamber 10 is accessed. It has a possible structure. The door portion 17 is provided with an operation handle 16. When the door portion 17 is fully closed, the operation handle 16 is moved in the direction of arrow A in FIG. The magnetic foreign matter removal chamber 10 and the door portion 17 can be brought into close contact with each other to seal the internal space of the magnetic foreign matter removal chamber 10 from the door portion 17 side.

  FIG. 2 is a side view showing a side surface of the magnetic foreign matter removing apparatus 1. The magnetic foreign matter removing apparatus 1 is composed of a magnetic foreign matter removing chamber 10 and includes magnetic foreign matter removing modules 20 and 22 inside. These magnetic foreign matter removing modules 20 and 22 are, for example, detachably attached to the inside of the magnetic foreign matter removing chamber 10 in a multi-stage manner, and include bar magnets 21 and 23 for removing foreign matters. The magnetic foreign matter removal chamber 10 is provided with a door portion 17 that is openably and closably attached via a hinge 18. By opening the door portion 17, the internal space of the magnetic foreign matter removal chamber 10 is accessed. Thus, the magnetic foreign matter removing modules 20 and 22 can be attached / removed. The magnetic foreign matter removing apparatus 1 is supported and fixed to a pedestal portion 31 joined to the outer wall 13 of the magnetic foreign matter removing chamber 10 by welding or the like, for example.

  Next, the structure of the magnetic foreign material removing apparatus of the present invention will be described with reference to FIGS.

First, the structure of the magnetic foreign material removal module 20 detachably accommodated in the magnetic foreign material removal chamber 10 of the magnetic foreign material device 1 of the present invention will be described with reference to FIG.
The magnetic foreign matter removing module 20 is formed of a box-shaped frame, and includes a frame 47 composed of a front plate 47a and a side plate 47b, a bar magnet 21 and the like attached to the front plate 47a of the frame 47 with end portions connected and fixed. Consists of. The side plate 47 b is formed by forming a support arm 44 that protrudes upward, and a side surface upper portion 43 is formed at the protruding end of the support arm 44. The side upper portion 43 is formed by bending the protruding end of the side upper portion 43 to be bent.

  FIG. 3 shows the overall structure of the magnetic foreign material removal apparatus 1 provided with the magnetic foreign material removal module 20 shown in FIG. 5. The magnetic foreign material removal chamber 10 has, for example, two sets of magnetic foreign material removal modules 20. , 22 are provided. The magnetic foreign matter removing modules 20 and 22 are accommodated in a state where the side upper portion 43 abuts against a block-like support portion 41 fixed to the inner wall surface 40 of the inner surface of the magnetic foreign matter removing chamber and is suspended. . FIG. 4 is an enlarged view of the state. The side surface upper portion 43 is engaged with the lower surface thereof in close contact with the contact surface 45 of the support portion 41, and the magnetic foreign matter removing modules 20 and 22 are suspended and supported. It is stored.

  As shown in Example 1 and the like, the side surface upper portion 43 is in close contact with the support portion 41, so that the object to be treated does not stay, and the magnetic material is efficiently removed. The foreign matter removing modules 20 and 22 can be easily attached and detached.

  As shown in the first embodiment or the like, the magnetic foreign matter removing modules 20 and 22 are supported by a support portion 41 that is above the portion where the bar magnet 21 is disposed. It is clearly shown that the contact surface 45 is above the center of gravity position of 22. That is, since the contact surface 45 is above the center of gravity of the magnetic foreign matter removing modules 20 and 22, the position of the contact surface 45 does not interfere with the flow of the processing object, and as a result, the processing object is stable and smooth. It can flow in the state. This effectively removes the magnetic foreign matter.

Industrial applicability

As described above, according to the present invention, the inner wall of the magnetic foreign material removal chamber to which the magnetic foreign material removal module is attached from the gas, liquid, powder, granules, etc., and the magnetic foreign material removal module side It is possible to hold the gap without forming a gap between them.
For this reason, the said powder etc. to be transferred do not enter into the gap between the inner wall surface of the magnetic foreign substance removal chamber and the side part of the magnetic foreign substance removal module, and the removal work of the magnetic foreign substance removal module is easy. Can be implemented.

  In the magnetic foreign material removal apparatus constructed according to the present invention, the incorporated magnetic foreign material removal module can always be easily removed, and the maintenance performance of the magnetic foreign material removal device is remarkably improved. It has great utility value.

It is a front view which shows a part of magnetic body foreign material removal apparatus concerning one Embodiment of this invention. It is a side view which shows the one part side surface of the magnetic body foreign material removal apparatus concerning one Embodiment of this invention. FIG. 6 is a cross-sectional view taken along the line BB ′ of FIG. 2 and is an explanatory view showing a state of the magnetic foreign matter removal chamber and the magnetic foreign matter removal module and the bar magnet installed in the magnetic foreign matter removal chamber. It is explanatory drawing for demonstrating in detail the state of suspension of a magnetic body foreign material removal module. It is a perspective view for showing the structure of an example of the magnetic substance foreign material removal module of this magnetic substance foreign material removal apparatus. It is explanatory drawing which shows the structure of an example of the conventional magnetic foreign material removal apparatus.

DESCRIPTION OF SYMBOLS 1 Magnetic foreign material removal apparatus 10 Magnetic foreign material removal chamber 11 Inlet 12 Ejection port 13 Outer wall 15 Stopper 16 Operation handle 17 Door part 18 Hinge 20 Magnetic foreign material removal module 21 Bar magnet 22 Magnetic foreign material removal module 23 Bar magnet 31 Base portion 40 Inner wall portion 41 Support portion 43 Upper side surface 44 Support arm 45 Contact surface 46 Support member 47 Frame 47a Front plate 47b Side plate 100 Magnetic foreign material removal device 101 Clearance 110 Magnetic foreign material removal chamber 120 Magnetic foreign material removal module 121 Bar Magnet 140 inner wall

Claims (1)

A removing device for removing magnetic foreign substances contained in a processing object such as gas, liquid, powder, etc., the removing apparatus removing an inlet of the processing object and magnetic foreign substances connected thereto A magnetic foreign substance removal module that is detachably attached to the removal chamber, and a support for hanging down the magnetic foreign substance removal module. The magnetic foreign matter removing module includes a frame-like frame and a bar magnet attached to the frame, and the frame is formed with support arms protruding above both side surfaces thereof. The upper end of the side surface is bent at the protruding end of the support arm, and the support portion is formed of a separate convex block body that is fixed to the inner wall surface of the magnetic foreign matter removal chamber. upon Wherein the side surface upper contact surface abutting is formed, the side consists those contacts closely to the upper and the contact surface, said contact surface altitude the center of gravity of the magnetic foreign object removal module ( A magnetic foreign matter removing apparatus formed on the upper portion).