JP6043653B2 - Automatic iron removal equipment - Google Patents

Description

  The present invention relates to an automatic iron removal apparatus that automatically removes magnetic materials such as fine iron powder and iron pieces mixed in raw materials used in the chemical industry, food industry, pharmaceutical industry, ceramic industry, mining industry, high-tech industry, etc. is there.

  Conventionally, as a device that removes magnetic materials such as fine iron powder and iron pieces mixed in raw materials, a large number of magnet bars are arranged so as to cross the rectangular iron removal chamber, and from the raw materials flowing down this iron removal chamber An automatic iron removal apparatus is widely used in which foreign substances such as fine iron powder and iron pieces mixed therein are removed by adsorbing them with a magnet bar (see, for example, Patent Document 1).

  By the way, in the conventional automatic iron removal apparatus, a large number of magnet bars are arranged so as to be orthogonal to the flow direction of the raw materials, and therefore, there is a problem that powder accumulation due to a powder bridge tends to occur on the upstream side of the magnet bars. there were.

  In view of such a problem, the present applicant firstly prevented the accumulation of powder by the bridge of the powder of the magnet bar, and increased the degree of foreign matter adsorption to improve the iron removal effect. A support bar is provided so as to extend across, and a plurality of magnet bars are provided on both sides of the support bar so that the tip is inclined downward with respect to the horizontal plane from the center of the iron removal chamber to the vicinity of the opposite side wall. In parallel, the base of each magnet bar is fixed to the support bar by welding, so that the tip of the magnet bar is released from the side wall of the iron removal chamber. And an automatic iron removal device in which the support bar is fixed to a frame that is attached to and detached from the iron removal chamber in a drawer shape has been proposed (see Patent Document 2).

  This automatic iron removal device prevents the accumulation of powder by the bridge of powder by providing the magnet bar inclined with respect to the horizontal plane, and increases the length of the magnet bar in the raw material flow direction, Many advantages such as increasing the degree of adsorption of iron to improve the iron removal effect, and further freeing the tip of the magnet bar from the side wall of the iron removal chamber to facilitate the detachment of the powder from the magnet bar It was what had.

  On the other hand, this automatic iron removal device is fixed to the inner surface of the side wall of the iron removal chamber in order to support the frame that is attached to the iron removal chamber in a drawer shape and that supports the end of the frame. There is a problem that powder accumulates on the arranged guide rails, which requires a lot of time for cleaning.

JP-A-6-269695 Japanese Patent No. 4975566

  In view of the problems of the conventional automatic iron removal device, the present invention has a frame body for fixing a support bar and a guide rail that supports the frame body while enjoying the advantages of the automatic iron removal device of Patent Document 2. It aims at providing the automatic iron removal apparatus which solved the problem of the powder accumulation to the top.

  In order to achieve the above object, an automatic iron removal apparatus according to the present invention has a magnet structure including a plurality of magnet bars disposed in a iron removal chamber, and magnetizes foreign matter from a magnetic material flowing down in the iron removal chamber. In an automatic iron removal device that is removed by adsorption with a bar, a support shaft is fixed horizontally in the iron removal chamber, and is slidable in the axial direction of the support shaft and does not rotate with respect to the support shaft. And a magnet bar fixed to the mounting member fixed at a distance from the support cylinder so that the tip side of the magnet bar is inclined downward.

  In this case, the protrusion guide piece is provided on the support shaft in the axial direction, and the notch groove into which the protrusion guide piece provided on the support shaft is fitted in the support cylinder can be formed in the axial direction.

  In addition, a mountain-shaped branch plate can be fixed above the mounting member.

  According to the automatic iron removal device of the present invention, the automatic iron removal device of Patent Document 2 has a magnet bar fixed so that the tip side of the magnet bar is inclined downward, thereby preventing powder accumulation due to powder bridges. By increasing the length of the magnet bar in the raw material flow direction, the degree of foreign matter adsorption is increased to improve the iron removal effect, and the tip of the magnet bar is released from the side wall of the iron removal chamber, The support cylinder is disposed so as to be slidable in the axial direction of the support shaft and not to rotate with respect to the support shaft while having the advantage that the powder can be smoothly detached from the support shaft. Thus, the magnet structure can be stably put in and out of the iron removal chamber. For this reason, a frame for fixing the support bar provided in the automatic iron removal device of Patent Document 2 and this It is possible to eliminate the guide rails for supporting the body, which makes it possible to solve the problem that stagnant powder onto these members occurs.

  In addition, the protrusion guide piece is provided on the support shaft in the axial direction, and the support cylinder is formed in the axial direction of the support shaft by forming a notch groove in the support cylinder in which the protrusion guide piece provided on the support shaft is inserted. It is possible to realize a mechanism that is slidable and that does not rotate with respect to the support shaft with a simple structure and high accuracy.

  Further, by fixing the mountain-shaped branch plate above the mounting member, it is possible to prevent powder accumulation from occurring on the support cylinder and the mounting member.

It is a front view which shows one Example of the automatic iron removal apparatus of this invention. It is the same side view. It is the same top view. The main part of the automatic iron removal apparatus is shown, (a1) is a side view of the support shaft, (a2) is the front view, (b1) is a side view of the support tube of the magnet structure, and (b2) is the front view. It is.

  Embodiments of an automatic iron removal apparatus of the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of the automatic iron removal apparatus of the present invention.
This automatic iron removal apparatus 1 is provided with magnet structures 2A and 2B each having a plurality of magnet bars 20 in a cylindrical iron removal chamber 11, and the magnetic material is made from the raw material flowing down in the iron removal chamber 11. The foreign matter is removed by being attracted by the magnet bar 20, and the protrusion guide piece 31a as the support mechanism 3A, 3B of the magnet structure 2A, 2B is provided in the axial direction in the iron removal chamber 11. The support shaft 31 is fixed horizontally, and the support tube 21 in which the notch groove 21a into which the protrusion guide piece 31a provided on the support shaft 31 is fitted is formed in the axial direction so that the support tube 21 can slide in the axial direction of the support shaft 31. The magnet bar 20 is fixed to the mounting member 22 that is disposed and fixed to the support cylinder 21 with a gap so that the tip side of the magnet bar 20 is inclined downward.

  The iron removal chamber 11 is not particularly limited as long as it has a cylindrical shape in which the magnet structures 2A and 2B can be disposed. In this embodiment, the iron removal chamber 11 is surrounded by the side wall 10a. The inside of the rectangular tube-shaped casing 10 is configured as a deironing chamber 11. The casing 10 has a supply port 13 for raw materials on the upper side, a discharge port 14 for discharging raw materials subjected to deironing processing on the lower side, and a front surface. An opening 12 is formed in the magnet structure 2 </ b> A, 2 </ b> B with respect to the iron removal chamber 11, and the door 4 is provided in the opening 12.

In this embodiment, the support mechanisms 3A and 3B for supporting the magnet structures 2A and 2B are supported so that the magnet structures 2A and 2B can be arranged in two upper and lower stages so as to be positioned in the same vertical plane. 31 is fixed in two upper and lower stages.
The number of stages where the magnet structures 2A and 2B are arranged is not limited to the upper and lower two stages of the present embodiment, but can be one stage or three or more stages. In order to improve the effect, the number of steps is preferably two or more.

  The support shaft 31 is configured such that the distal end side becomes a free end by fixing the proximal end side to the inner surface of the side wall 10a of the housing 10 via the mounting member 31b in a cantilever manner.

The ridge guide piece 31 a is provided on the lower end side of the outer peripheral surface of the support shaft 31 over substantially the entire length of the support shaft 31 in the axial direction.
As a result, when the support cylinder 21 is slid in the axial direction of the support shaft 31, the magnet bar 20 fixed to the support cylinder 21 and the support cylinder 21 via the mounting member 22 rotates about the axis of the support shaft 31. I try not to.

The support cylinder 21 constituting the magnet structures 2A and 2B is formed so that the notch groove 21a is formed over substantially the entire length of the support cylinder 21 in the axial direction so that the protrusion guide piece 31a provided on the support shaft 31 can be fitted. I have to.
Further, the support cylinder 21 supports the support cylinder 21 at both ends with the support shaft 31 and the support member 40 by fitting the support member 40 disposed on the door 4 when the door 4 is closed. I have to.

  In the present embodiment, the protrusion guide provided on the support shaft 31 is a mechanism that displaces the support cylinder 21 in the axial direction of the support shaft 31 and does not rotate with respect to the support shaft 31. By adopting a mechanism that fits the piece 31a into a notch groove 21a formed in the support cylinder 21, the support cylinder 21 and the support shaft 31 are configured with a circular cross section, and the mechanism has a simple structure and accuracy. However, instead of this, for example, the cross-sections of the support cylinder 21 and the support shaft 31 can be formed of a non-circular polygonal shape or an elliptical shape.

The attachment member 22 for fixing the magnet bar 20 is fixed to the support cylinder 21 with a predetermined interval, specifically, with an interval of less than one time the diameter of the magnet bar 20.
When the magnet structures 2A and 2B are arranged in two upper and lower stages as in this embodiment, the position where the mounting member 22 is fixed is shifted in the upper and lower magnet structures 2A and 2B. Specifically, the attachment member 22 is fixed so that the magnet bar 20 of the lower magnet structure 2B is positioned at a lower position in the middle of the magnet bar 20 of the upper magnet structure 2A.
Accordingly, in combination with the fixing of the magnet bar 20 with an interval of less than one time the diameter of the magnet bar 20, the raw material flowing down is surely brought into contact with the magnet bar 20, and the foreign matter contained in the raw material is adsorbed. The degree of iron removal can be increased to improve the iron removal effect.

The magnet bar 20 is fixed to the mounting member 22 so that the base end side is inclined downward, and the inclination angle θ1 with respect to the horizontal plane is set in consideration of the angle of repose of the raw material powder. It can be set to 30 ° to 70 °, preferably about 40 ° to 60 °.
In addition, the magnet bar 20 is cantilevered to the mounting member 22 at the base end side so that the distal end side is a free end, and the distal end of the magnet bar 20 is the side wall of the casing 10 constituting the iron removal chamber 11. It is made free from the inner surface of 10a.

  In the present embodiment, the magnet bar 20 is attached to a support cylinder 21 supported by a support shaft 31 fixed so as to pass through the center of the iron removal chamber 11, and the axis of the support cylinder 21 via an attachment member 22. The center of gravity of the magnet structures 2A and 2B is positioned in the plane including the axis of the support cylinder 21 by arranging them in parallel in the two directions orthogonal to each other. The support shaft 31 is fixed along the side wall 10a of the housing 10 forming the iron removal chamber 11, and the magnet bars 20 are arranged in parallel with a gap in one direction perpendicular to the axis of the support cylinder 21. It can also be.

A mountain-shaped branch plate 23 is fixed above the mounting member 22 for fixing the magnet bar 20.
The inclination angle θ2 of the branch plate 23 with respect to the horizontal plane can be set in consideration of the angle of repose of the powder as the raw material, and is set to about 30 ° to 70 °, preferably about 40 ° to 60 °. .
Thereby, it is possible to prevent powder accumulation on the support cylinder 21 and the attachment member 22.

The door 4 disposed in the opening 12 on the front surface of the housing 10 is for putting the magnet structures 2A and 2B formed on the side wall 10b into and out of the iron removal chamber 11, and closing the door 4. At this time, a support member 40 that fits into the end of the support cylinder 21 and supports the support cylinder 21 is disposed.
The door 4 is configured such that the support member 40 that supports the support cylinder 21 can be opened and closed in parallel with the axial direction of the support cylinder 21 (and the support shaft 31), and the side wall of the housing 10. The iron removal chamber 11 can be hermetically sealed by toggle clamps C disposed at four locations 10b.

  According to this automatic iron removal apparatus 1, by fixing the tip end side of the magnet bar 20 so as to be inclined downward, it is possible to prevent accumulation of powder due to the bridge of the powder, and the length of the magnet bar 20 in the raw material flow direction. By increasing the length, the degree of foreign matter adsorption is increased to improve the iron removal effect, and the tip of the magnet bar 20 is released from the side wall 10a of the iron removal chamber 11 so that the powder is detached from the magnet bar 20. By arranging the support cylinder 21 so as to be slidable in the axial direction of the support shaft 31 and not to rotate with respect to the support shaft 31, the magnet structure 2A, 2B can be stably taken in and out of the iron removal chamber 11, and for this reason, a frame for fixing the support bar provided in the automatic iron removal device of Patent Document 2 Beauty can be eliminated guide rails for supporting the frame, which makes it possible to solve the problem that stagnant powder onto these members occurs.

  As mentioned above, although the automatic iron removal apparatus of this invention was demonstrated based on the Example, this invention is not limited to the structure described in the said Example, The structure is suitably comprised in the range which does not deviate from the meaning. It can be changed.

  The automatic iron removal apparatus of the present invention can solve the problem of powder accumulation on the frame that fixes the support bar and the guide rail that supports the frame, so that the magnetic material such as fine iron powder and iron pieces mixed in the raw material Can be widely used in applications of automatic iron removal equipment that automatically removes.

DESCRIPTION OF SYMBOLS 1 Automatic iron removal apparatus 10 Case 10a Side wall 10b Side wall 11 Iron removal chamber 2A, 2B Magnet structure 20 Magnet bar 21 Support cylinder 21a Notch groove 22 Mounting member 23 Branch plate 3A, 3B Support mechanism 31 Support shaft 31a Projection guide piece 4 Door 40 Support member

Claims (3)

  In an automatic deironing device, a magnet structure having a plurality of magnet bars is arranged in a deironing chamber, and foreign substances of the magnetic material are removed from the raw material flowing down in the deironing chamber by adsorbing with the magnet bar. A support shaft is fixed horizontally in the room, and a support cylinder is disposed so as to be slidable in the axial direction of the support shaft and not to rotate with respect to the support shaft, and is spaced from the support cylinder. An automatic iron removal apparatus, wherein a magnet bar is fixed to a fixed mounting member so that a tip end side of the magnet bar is inclined downward.   2. The automatic iron removal according to claim 1, wherein the support shaft is provided with a ridge guide piece in the axial direction, and the support cylinder is formed with a notch groove into which the ridge guide piece provided on the support shaft is inserted in the axial direction. apparatus.   The automatic iron removal apparatus according to claim 1 or 2, wherein a mountain-shaped branch plate is fixed above the mounting member.

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