JP2018038981A - Pan type granulating device, installation jig of pan type granulating device, and installation method of pan type granulating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pan type granulating device without generating defects such as allophone generation even with large diameter.SOLUTION: In an aspect that gaps in a split or cutting 9 of a taper sleeve 8 are closed during a process of operation for engaging a pan boss 3 of a pan type granulating part 2 with a taper sleeve 8 equipped to a tip 4a of a main shaft 4 and conducting coupling with an oil pressure nut 11 and a bearing nut 13, the tip part 4a of the main shaft 4 and the taper sleeve 8 are strongly engaged and pan boss 3 of the pan type granulating part 2-taper sleeve 8-tip 4a of the main shaft 4 are surely integrated.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a bread granulator, an installation jig for the bread granulator, and an installation method for the bread granulator.

  When powder previously conditioned or a powder to which a binder has been added is put into a pan-type granulation section that rotates in an inclined state, the powder is granulated into a substantially spherical or granular shape by the rolling operation. A device using this phenomenon is a bread granulator, which is used for granulating coke powder, steelmaking dust, metal powder, cement raw material, steelmaking raw material, fertilizer raw material, and the like.

  The bread-type granulation part is a dish-shaped member in which a rim is formed around a flat bottom part. When various powders are continuously added to the bread granulation part, the powder stays in the lower part of the rotating bread granulation part and receives powder for rolling operation accompanying rotation of the bread granulation part. The body is granulated. At this time, water is sprayed on the powder in the bread-type granulation part so as to obtain moisture suitable for granulation. When the amount of powder input to the bread-type granulation part exceeds a certain amount, the granulated material overflows from the rim and is discharged out of the bread-type granulation part. The particle size of the granulated product is controlled by adjusting conditions such as the physical properties of the powder, the amount of water sprayed into the powder in the bread-type granulated part, the rotational speed of the bread-type granulated part, the tilt angle or the rim height. Thus, a granulated product having a predetermined particle size is continuously obtained.

  By the way, for example, in the bread-type granulation apparatus disclosed in Patent Document 1, the diameter of the bread-type granulation part has recently been increased due to a demand for an increase in production capacity. As a result, when transporting such a large-diameter bread granulator to its place of use, the large-diameter bread granulator is assembled to the main shaft that supports the rotation of the bread granulator. It cannot be transported in a wet state. For this reason, the bread granulator produced at the production factory is assembled at the factory, tested for quality, then separated and transported to its place of use. Assembly of the grain part and the main shaft that supports the rotation of the bread-type granulation part is performed using a crane or the like.

  After separating and transporting in such a manner, it is necessary to reassemble at the transport destination. Therefore, in the conventional bread-type granulating apparatus 1 shown in FIG. 7, the connection fitting portion (hereinafter referred to as “pan boss”) of the bread-type granulating portion 2 is used. 3) and the tip 4a of the main shaft 4 were connected to each other in a cylindrical connection with play. That is, the inner diameter of the pan boss 3 is made substantially larger than the outer diameter of the front end portion 4a of the main shaft 4. As a result, the bread boss 3 of the bread mold granulation unit 2 and the tip end of the main shaft 4 that supports the rotation of the bread granulation part 2 again using a crane or the like at the transport destination using the bread granulation apparatus 1. The efficiency at the time of assembling with 4a was improved.

JP 2013-91009 A

  When the connecting portion between the bread boss 3 of the bread-type granulating portion 2 and the tip portion 4a of the main shaft 4 is a cylindrical connecting portion with play as in the conventional bread-type granulating device 1 shown in FIG. As the diameter of the bread granulation unit 2 is further increased, the rotation of the bread granulation unit 2 is likely to be blurred, and this is the pinion of the rotation drive unit (not shown) of the bread granulation unit 2 This is a cause of problems such as generation of vibrations and abnormal noise from a rack mechanism (not shown).

On the other hand, as a countermeasure, in the case of fastening without any play of the cylindrical connecting portion, the heavy-duty bread granulation portion 2 is suspended by a crane, and the tip end portion of the main shaft 4 is passed through the pan boss 3. The work itself to be fitted to 4a is a very difficult work.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bread granulator that does not cause problems such as the generation of abnormal noise even in a bread granulator having a large diameter.

  That is, the bread-type granulation apparatus of the present invention is a bread-type granulation apparatus provided with a bread-type granulation part and a main shaft that supports the rotation of the rotating bread-type granulation part. A taper sleeve that can be attached to and detached from each of the main shaft and the bread boss of the bread-type granulation part is provided, and the taper sleeve has a tapered surface on the outer side, and is integrally attached to the bread-type granulation part. The inner surface of the pan boss is a tapered surface, and the pan boss can be attached to and detached from the taper sleeve mounted on the main shaft.

  Moreover, the installation jig of the bread type granulation apparatus of the present invention is an installation jig used for installation of the bread type granulation apparatus of the present invention, and is attached with a protrusion fixed to the tip end portion of the main shaft and a hydraulic nut. The base plate portion is integrated, and the base end of a taper tightening jig seat arranged with its tip abutting against the pan boss is fixed to the base plate portion.

Furthermore, the installation method of the bread-type granulation apparatus of the present invention is characterized in that the bread-type granulation part and the main shaft are assembled to the front end portion of the main shaft via a detachable taper sleeve.

According to the bread granulator of the present invention, an appropriate fit with the necessary fastening force between the pan boss and the main shaft is required for reassembling at the place of use after disassembling and transporting even in the bread granulator having a larger diameter. Can be accurately reproduced, and problems such as vibration and abnormal noise can be reduced.

It is a side surface schematic diagram of the bread | pan type granulation apparatus which is embodiment of this invention. It is the elements on larger scale of the bread type granulator shown in FIG. FIG. 2 is a partial cross-sectional view of the bread granulator shown in FIG. 1. It is a fragmentary longitudinal cross-sectional view of the bread type granulator shown in FIG. It is the other partial enlarged view of the bread type granulator shown in FIG. It is another partial expansion explanatory drawing of the bread-type granulation apparatus shown in FIG. It is a partial expansion explanatory view of the conventional bread type granulator.

Hereinafter, a bread granulator according to an embodiment of the present invention will be described with reference to the drawings.
The bread-type granulation apparatus 1 according to the embodiment of the present invention includes a bread-type granulation part 2 that is a dish-like member having a rim 2b formed around a flat bottom part 2a, and a rotation drive part (not shown) such as a motor. The main shaft 4 is connected to a pan boss 3 fixed to the bread-type granulation portion 2 that rotates in the above manner, and supports the rotation of the bread-type granulation portion 2, and the main shaft 4 is interposed between the upper bearing 5a and the lower bearing 5b. The tilt base 6 is supported and a support 7 that supports the tilt base 6. The bread-type granulation part 2 is inclined and is supported on an inclination table 6 in a rotatable state.

  The tilt table 6 is provided on the support 7 so that the tilt angle can be changed. Thereby, the inclination | tilt angle of the bread-type granulation part 2 can be changed arbitrarily. Moreover, the bread-type granulation part 2 can adjust the height of the rim | limb 2b. Further, the rotational speed of the bread granulation unit 2 can be adjusted to an arbitrary speed. By continuously putting the raw material powder into the rotating pan-type granulation unit 2, the powder is rolled and granulated into a granulated product.

The bread granulator 1 according to the embodiment of the present invention includes a taper sleeve 8 that is attached to and detached from the tip 4a of the main shaft 4 that supports the rotation of the bread granulator 2 as shown in FIGS. . A slit or notch 9 is formed in the taper sleeve 8.
The inner surface 8a of the taper sleeve 8 is a non-tapered cylindrical surface, while the outer surface 8b of the taper sleeve 8 is a taper surface. A nut threaded portion 8c is formed on the outer surface 8b.
The inner surface 8a of the taper sleeve 8 is formed in a conforming relationship with the outer cylindrical surface 4b of the tip portion 4a of the main shaft 4 so as to be fitted to each other with as little gap as possible.
On the other hand, a tapered surface 3a is formed on the inner side of the pan boss 3 fixed to the pan-type granulated portion 2, and the inner tapered surface 3a of the pan boss 3 and the outer surface 8b of the tapered sleeve 8 are made as much as possible. They are formed in a fitting relationship that fits together without a gap.

Next, an embodiment of an installation jig for the bread granulator of the present invention used for installing the bread granulator of the above embodiment of the present invention will be described.
As shown in FIGS. 5 and 6, the installation jig 10 of the present embodiment is formed by integrating a protruding portion 10 a that is fixed to the distal end portion 4 a of the main shaft 4 and a substrate portion 10 b to which the hydraulic nut 11 is attached. The base end of the taper tightening jig seat 12 disposed in contact with the pan boss 3 is fixed to the substrate portion 10b. Using the installation jig 10, the fitting attachment of the pan boss 3 fixed to the bread granulation portion 2 to the taper sleeve 8 attached to the outer cylindrical surface 4 b of the tip portion 4 a of the spindle 4 is performed on the taper sleeve 8. This is performed using a bearing nut 13 that is attached and fixes the pan boss 3 to the taper sleeve 8 and a hydraulic nut 11 that is attached to the substrate portion 10b.

That is, the taper sleeve 8 attached to the tip portion 4a of the main shaft 4 is inserted and fitted into the inside of the bread boss 3 of the bread-type granulated portion 2 having an inner tapered surface 3a, and the bearing nut 13 is attached. On the other hand, the center protruding portion 10a of the installation jig 10 is fitted into a recess formed at the tip of the tip portion 4a of the main shaft 4 and fixed to the tip portion 4a of the main shaft 4 with a screw. On the other hand, the tip end portion of the taper tightening jig seat 12 whose base end is fixed to the installation jig 10 is placed in contact with the pan boss 3. Next, the installation nut 10 is integrated by attaching a hydraulic nut 11 with a screw. When hydraulic pressure is applied to the hydraulic nut 11 in this state, the pan boss 3 is pushed toward the proximal end of the main shaft 4 via the taper tightening jig seat 12, and the inner tapered surface 3 a of the pan boss 3 is moved to the outer surface 8 b of the tapered sleeve 8. It will be pressed against. In such a state that the hydraulic nut 11 is tightened, the bearing nut 13 is tightened from the gap of the installation jig 10 with a chisel or the like. Thereafter, the hydraulic nut 11 is loosened by the relief valve of the hydraulic pump, and the installation jig 10 is removed.
In the above process, the tightening torque of the bearing nut 13 is managed by recording the pressing force of the hydraulic nut 11 as management data.

The bread granulator 1 according to the embodiment of the present invention assembled as described above is installed after conveyance as follows.
First, the bread granulator 1 produced in the production factory is once assembled in the factory, and the operation performance is tested.
When assembling, the matching of the inner side surface 8a of the taper sleeve 8 and the outer cylindrical surface 4b of the tip end portion 4a of the main shaft 4 is matched and the inner taper surface 3a of the pan boss 3 and the outer surface 8b of the taper sleeve 8 are matched. Relationships are matched and the mutual compatibility is finished with high accuracy.

The bread-type granulation unit 2 is removed from the main shaft 4 of the bread-type granulation apparatus 1 after the driving performance test and is transported to a predetermined place of use.
After transport, reassemble in the above procedure and use for actual operation.
At that time, since the pressing force of the hydraulic nut 11 is recorded as management data, the taper sleeve 8 attached to the tip end portion 4a of the main shaft 4 is inserted and fitted inside the pan boss 3 for use in actual operation. When the bearing nut 13 is attached, the fitting by the pressing force of the hydraulic nut 11 recorded as management data makes it possible to obtain the same appropriate fitting force as in the operation performance test.

  A bread granulator 1 according to an embodiment of the present invention includes a taper sleeve 8 that is attached to and detached from a main shaft 4 that supports rotation of a bread granulator 2, thereby producing a bread granulator produced at a production factory. When assembling 1 at a factory and confirming its quality, the taper sleeve 8 that is detachably attached to the distal end portion 4a of the main shaft 4 can be attached to and detached from the distal end portion 4a of the main shaft 4 so as to efficiently perform alignment. Further, the fitting property between the pan boss 3 and the taper sleeve 8 of the bread-type granulation part 2 is also efficient between the taper sleeve 8 separate from the tip part 4 a of the main shaft 4 and the pan boss 3 of the bread-type granulation part 2. Can be confirmed.

In addition, a slit or notch 9 is formed in the taper sleeve 8 so that the pan boss 3 of the pan-type granulated portion 2 is fitted to the taper sleeve 8 mounted on the tip portion 4a of the main shaft 4 and the hydraulic nut 11 is fitted. The tip 4a of the main shaft 4 and the taper sleeve 8 are firmly joined in such a manner that the gap in the slit or notch 9 of the taper sleeve 8 is closed in the process of fastening with the bearing nut 13 after the temporary fastening. The pan boss 3 -taper sleeve 8 of the pan-type granulated portion 2 and the tip 4a of the main shaft 4 are reliably "integrated".
Therefore, depending on the embodiment, a constant gap is formed between the inner tapered surface 3a of the pan boss 3 and the outer surface 8b of the tapered sleeve 8 in anticipation of the reduced diameter of the pan boss 3 due to the gap in the slit or notch 9 being closed. In this way, the efficiency at the time of assembling the pan boss 3 to the taper sleeve 8 may be improved.

  Further, by assembling the bread granulation unit 2 and the main shaft 4 by adopting a process of fastening using the hydraulic nut 11 when the pan type granulation unit 2 and the main shaft 4 are assembled again at the transport destination. Can be converted into numerical data by the hydraulic pressure used for the hydraulic nut 11, and by accumulating numerical data, it is possible to accumulate empirical know-how and skills of field workers as objectively and widely transferable knowledge. Standardization of work becomes possible based on the accumulation of

DESCRIPTION OF SYMBOLS 1 ... Bread type granulation apparatus, 2 ... Bread type granulation part, 4 ... Main shaft, 8 ... Tapered sleeve, 3 ... Pan boss, 9 ... Slit or notch |・ Hydraulic nut, 13 ... bearing nut.

Claims (8)

  A bread-type granulation apparatus comprising a bread-type granulation unit and a main shaft that supports rotation of the rotating bread-type granulation unit, the main shaft and bread-type granulation supporting rotation of the bread-type granulation unit Each of the pan bosses has a detachable taper sleeve, and the taper sleeve has a tapered outer surface, while the pan boss integrally attached to the bread granulation portion has a tapered surface on the inner surface. A bread type granulating apparatus, wherein the bread boss is detachable from the taper sleeve attached to the main shaft.   The bread granulator according to claim 1, wherein the taper sleeve is formed with slits or cuts.   It is an installation jig used for installing the bread-type granulation apparatus according to claim 1 or claim 2, wherein a projecting portion fixed to the tip portion of the main shaft and a substrate portion to which a hydraulic nut is attached are integrated. An installation jig for a bread-type granulation apparatus, characterized in that a base end of a taper fastening jig seat arranged with a tip abutting against the bread boss is fixed to the substrate part.   An installation method of a bread type granulating apparatus, wherein a taper sleeve detachably attached to a tip end portion of a main shaft is attached to and detached from the tip end portion of the main shaft, and a bread type granulating portion and the main shaft are assembled via the taper sleeve.   The step of assembling the bread-type granulated portion and the main shaft via the taper sleeve is performed by fitting the bread boss of the bread-type granulated portion whose inside is tapered to the taper sleeve attached to the tip of the main shaft. The method for installing a bread granulator according to claim 4, wherein the step is a fastening step using a bearing nut.   The step of fitting the pan boss of the pan-type granulated portion to a taper sleeve attached to the tip end of the main shaft and fastening it with a bearing nut presses the pan boss against the taper sleeve using a hydraulic nut, and the pan boss with the hydraulic nut The method for installing a bread-type granulator according to claim 5, wherein the step is fastened with a bearing nut while being pressed against the taper sleeve. 7. The installation method of a bread granulator according to claim 6, wherein the pressure for pressing the pan boss against the taper sleeve by the hydraulic nut is recorded as management data, and the tightening torque of the bearing nut is managed. .
  The installation method of the bread type granulation apparatus according to any one of claims 4 to 6, further comprising a step of attaching and detaching the bread boss of the bread type granulation part and the taper sleeve.

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