JP2007313452A - Stone mill - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stone mill, wherein disassembling and assembling of upper and lower mills are easy, and fine adjustment of a feed amount of a crushing object is simply performed. <P>SOLUTION: This stone mill is provided with: a lower mill unit 1 consisting of the lower mill 3 and a lower mill holder 4 fixed to the lower mill 3; an upper mill unit 2 consisting of the upper mill 5 and an upper mill holder 6 fixed to the upper mill 5; a holder support part 7 fixedly supporting the lower mill holder 4; a rotary shaft 10 fitted to a fitting hole provided at a center of the lower mill holder 4 and a fitting hole 7a of the holder support part 7, with an upper part inserted through respective through-holes 3a, 5a of the upper and lower mills 3, 5, and having a spindle hole 10a at an upper end part; a holder spindle 12 with a lower end part inserted into a sleeve bearing 11 fitted in a spindle hole 10a at an upper end part of the rotary shaft 10, with an upper end part fitted in a fitting hole 6a provided at the center of the upper mill holder 6; and a rotation stopping means 13 preventing rotation of the upper mill unit 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a millstone for pulverizing grains and the like, and more particularly to a millstone that allows easy disassembly and assembly of an upper mill and a lower mill.

In the conventional stone mill, a through hole is provided in the lower mill, a fitting portion is provided in a portion corresponding to the through hole of the lower mill, and an upper end of the rotary shaft passed through the through hole is provided at the upper section. A fitting portion that fits into the fitting portion of the mortar is provided, and the other end portion of the rotation shaft extends through the placement portion of the lower mortar and is connected to a driving device to rotate the upper die. (For example, refer to Patent Document 1).
In addition, the conventional stone mill, the material feeder for feeding the material to be crushed by the stone mill to the feed hole of the stone mill, the feeding means for feeding the material, and the material fed from the discharge part of the feeding means is led to the grain feeding hole, The funnel means rotates with the upper die, and the funnel means is formed such that the upper opening surrounds the rotation axis of the upper die (see, for example, Patent Document 2).

JP-A-11-28374 (paragraphs 0008 to 0013, FIGS. 1 to 3) Japanese Patent Laying-Open No. 2004-89751 (paragraphs 0012 and 0013, FIG. 1)

  Most of the conventional stone mills rotate the upper mill, as in Patent Document 1, and rotate the upper mill with a rotating shaft provided with a fitting section that fits into the lower mating section of the upper mill. However, it is not necessary for the rotating shaft to bear the weight load of the upper and lower stone mortars, and the bearing supporting the rotating shaft is sufficient for light loads, and the structure is not simple and easy to make. On the other hand, there was a problem that it was difficult to remove and remove the lower die anyway because the upper die was difficult to clean and inspect, and the Hitachi work on the sliding surface of the upper and lower stones could only be disassembled.

Also, in order to solve this problem, if the lower die rotates so that the upper and lower dies can be easily removed from the drive shaft, a heavy load may be used for the bearing, but a large bush type bearing or the like may be used for the upper die. Is required, and a structure for fitting the upper die is required, and a structure for stopping the co-rotation of the upper die is required, which causes a problem that the structure is complicated and difficult to manufacture.
In general, in the upper mill rotary type, the crushed material is discharged by attaching a brush or the like to the side of the upper mill, but even in the lower mill rotary type, the brush is attached to the side of the lower mill and scraped. Then, there was a problem that powder entered the bearings and the like at the lower part of the lower die.

  Also, since the upper and lower dies are made of stone, processing is not easy, and the processing accuracy of the holes related to the rotating shaft or the fitting part is poor, so the upper and lower dies are accurately aligned on the coaxial line. There was a problem that it was not possible to rotate. )

  In addition, the feeder for adjusting the supply and supply amount of the material to be crushed to the mortar has a complicated structure as in Patent Document 2 in the upper mortar rotary type, but the supply amount is also adjusted as the lower mortar rotary type. There was a problem that it was difficult.

  The present invention has been made to solve the above-mentioned problems, and it is easy to disassemble and assemble the upper die and the lower die, and can prevent the pulverized material from entering the bearing or the like in the lower lower die. An object of the present invention is to obtain a stone mill in which the supply amount can be finely adjusted with a simple structure, and the upper and lower dies can be accurately rotated on a coaxial line.

  The stone mill according to the present invention comprises a lower mill unit comprising a lower mill having a through hole in the center and a lower mill holder fixed integrally to the lower part of the lower mill, an upper mill having a through hole in the center, and the upper mill of the upper mill. An upper die unit consisting of an upper die holder fixed integrally on the upper portion, a holder support portion having a fitting hole in the center portion and fixing and supporting the lower portion of the lower die holder of the lower die unit, and the lower portion being a gantry The middle part is fitted in the fitting hole provided in the center part of the lower mortar holder and the fitting hole of the holder holding part, and the upper part is supported by the rotary driving means attached to the lower mortar holder. A rotary shaft having a spindle hole at the upper end portion is inserted into each through hole of the die, and a lower end portion is inserted into a sleeve bearing fitted into a spindle hole at the upper end portion of the rotary shaft, and the upper end portion is the upper die unit In the upper mortar holder A holder spindle fitted in a fitting hole provided in the upper die unit, and rotation preventing means for preventing rotation of the upper die unit, the upper die of the upper die unit and the lower die of the lower die unit And the lower mortar unit is rotated.

  According to this invention, a lower die unit comprising a lower die having a through-hole at the center and a lower die holder fixed integrally to the lower portion of the lower die, an upper die having a through-hole at the center, and an upper portion of the upper die An upper die unit composed of an upper die holder that is integrally fixed to the holder, a holder support portion that has a fitting hole in the center, and that fixes and supports the lower portion of the lower die holder of the lower die unit, and the lower portion serves as a gantry The middle part is fitted into the fitting hole provided in the central part of the lower mortar holder and the fitting hole of the holder holding part, and the upper part is supported by the attached rotational driving means, and the upper part is the lower mortar and the upper die. A rotary shaft having a spindle hole at the upper end, and a lower end inserted into a sleeve bearing fitted into the spindle hole at the upper end of the rotary shaft, and the upper end of the upper mill unit. In the center of the upper mill holder Since the holder spindle fitted in the fitted fitting hole and the rotation stop means for preventing the rotation of the upper die unit are provided, the upper die unit and the lower die unit can be easily disassembled and assembled. The unit and the lower mortar unit are relatively rotatable on the coaxial line with high accuracy.

1 is a partial sectional view of a stone mill showing an embodiment of the present invention, FIG. 2 is a plan view of a rotation stop means, FIG. 3 is a partial side view of another rotation stop means, and FIG. 4 is a sectional view of a discharger. 5 is a sectional view for explaining the operation of the feeder.
In FIG. 1, the stone mill includes a lower mill unit 1 including a lower mill 3 having a through hole 3a at the center and a lower mill holder 4 integrally fixed to the lower part of the lower mill 3, and an upper having a through hole 5a at the center. An upper die unit 2 comprising a die 5 and an upper die holder 6 integrally fixed to the upper portion of the upper die 5;
A holder support portion 7 having a fitting hole 7a in the center and fixing and supporting the lower portion of the lower mortar holder 4 of the lower mortar unit 1, and rotational driving means such as a bearing and a motor with the lower portion attached to the gantry 8 (see FIG. And a fitting hole 9a through a sleeve 9 fitted in a through hole 4a provided in the center of the lower die holder 4 provided in the center of the lower die holder 4 The holder support portion 7 is fitted into the fitting hole 7a, and the upper portion is passed through the through holes 3a and 5a of the lower die 3 and the upper die 5, and the rotary shaft 10 having the spindle hole 10a at the upper end portion is provided. .

The material of the lower mortar holder 4 and the upper mortar holder 6 is a light metal such as an aluminum alloy, or plastic or stainless steel.
The holder support portion 7 is locked to the rotary shaft 10 with a mechanical lock 17, and the lower mortar holder 4 is provided in the holder support portion 7 in a fitting hole 4 b provided in the lower surface of the lower mortar holder 4. The protrusion 18 is fitted and fixed.

Further, the lower end portion is inserted into the sleeve bearing 11 fitted into the spindle hole 10 a at the upper end portion of the rotary shaft 10, and the upper end portion is fitted into the fitting hole 6 a provided at the center of the upper die holder 6 of the upper die unit 2. A combined holder spindle 12 is provided. The holder spindle 12 is locked to the upper mortar holder 6 by a mechanical lock 19.
Moreover, the rotation stop means 13 which blocks | prevents rotation of the upper mill unit 2 is provided.
The anti-rotation means 13 includes a support column 14 erected on the gantry 8 and an anti-rotation member 15 attached to the upper mortar holder 6. The anti-rotation member 15 has a U-shape at its end as shown in FIG. The engaged portion 15a and the attachment hole 15b are provided, and the upper end portion of the support column 14 is an engaging portion that engages with the engaged portion 15a. Note that a U-shaped engaged portion may be provided on the support column 14.

  The rotation stop means may have the configuration shown in FIG. FIG. 3A is a partial side view showing the rotation stop means, and FIG. 3B is a side view seen from the side of the rotation stop member. In the figure, a rotation stop means 41 is a column having a rotatable arm 44 having a bearing 42 erected on the gantry 8 and provided at the upper end portion in the vertical direction and a rotating shaft 43 pivotally supported by the bearing 42. 14 and an anti-rotation member 45 attached to the upper part of the upper mortar holder 6 are provided, and the anti-rotation member 45 is provided with a U-shaped engaged portion 45 a that engages with the arm 44.

  In addition, a through hole 10 b that intersects the axial direction for removing foreign matters such as friction debris of the sleeve bearing 11 is provided below the spindle hole 10 a of the rotating shaft 10. Further, a collar 16 is provided which is fitted to the rotary shaft 10 and covers the gap between the upper portion of the through hole 3 a of the lower mortar 3 and the rotary shaft 10. This is to prevent the object to be crushed or the pulverized material from entering between the through hole 3 a of the lower mortar 3 or the sleeve 9 of the lower mortar holder 4 and the rotary shaft 10.

Further, the lower part is fixed to the upper plate 20 of the gantry 8, the cylindrical outer guide 21 that surrounds the outer periphery of the lower mortar unit 1 and the upper mortar unit 2 is separated, and the lower part is fixed to the upper plate 20, and the lower mortar holder A cylindrical inner guide 22 surrounding the rotary shaft 10 at a position substantially along the outer periphery of the lower die 3 between the lower portion 4 and the upper plate 20, and an inter-guide upper plate 20 a between the outer guide 21 and the inner guide 22. And a pulverized material receiving portion 25 including a discharge hole 20b provided in the upper plate 20a between the guides and a discharge portion 23 including a discharge pipe 23 connected to the discharge hole 20b.
As shown in FIG. 4, the lower die unit 2 includes a cylindrical support portion 26 provided on the outer periphery of the lower die holder 4 and a blade 27 provided at a lower portion of the cylindrical support portion 26. Is provided with a discharger 28 that causes the blades 27 to move in the pulverized product receiving part 25 by the rotation of the pulverized product and to discharge the pulverized product in the pulverized product receiving part 25 from the discharge unit 24.

In addition, a supply pipe 32 inserted into the supply hole 31 of the object to be crushed provided in the upper mill unit 2;
A feeder 34 including a hopper 33 provided on the upper portion of the supply pipe 32 is provided.

Next, the assembly and use method of the lower mill unit 1 and the upper mill unit 2 according to the embodiment of the present invention will be described with reference to FIGS.
The lower mortar unit 1 includes, for example, the lower mortar 3 and the lower mortar holder 4 in which the through hole 3a is processed to be larger than the diameter of the rotary shaft 10, and the upper mortar unit 2 has the through hole 5a larger than the diameter of the rotary shaft 10. The processed upper die 5 and upper die holder 6 are bonded and integrated. Note that the lower die 3 and the upper die 5 are processed in advance into the shape shown in FIG. 1, and grooves for pulverization are formed on the sliding surface.

  In assembling the rotary shaft 10 and the lower mill unit 1, first, the sleeve bearing 11 is fitted into the spindle hole 10 a of the rotary shaft 10. Next, the sleeve 9 is fitted into the through hole 4a of the lower mortar holder 4 and fitted to the rotary shaft 10. Next, the rotary shaft 10 is fitted to the fitting hole 7a of the holder support portion 7, and the mechanical lock At 17, the rotary shaft 10 is locked. And the protrusion 18 provided in the holder support part 7 is fitted and fixed to the fitting hole 4b provided in the lower surface of the lower mortar holder 4.

On the other hand, the holder spindle 12 is fitted into the fitting hole 6 a of the upper mortar holder 6 and is locked by the mechanical lock 19. Then, the lower end portion of the slindle 12 of the upper die unit 2 is inserted into the sleeve bearing 11 at the upper end portion of the rotary shaft 10 so that the sliding contact surfaces of the upper die 5 and the lower die 3 are matched.
At this time, the upper mill unit 2 is fixed so that the U-shaped engaged portion 15 a of the rotation stop member 15 is engaged with the support column 14.

When using the stone mill thus configured, first, when the rotary shaft 10 is rotated by the rotation driving means, the lower mill unit 1 fixed to the rotary shaft 10 rotates. When the object to be crushed is supplied from the supply device 34, the object to be crushed is pulverized by the sliding contact surface of the upper die 5 and the sliding contact surface of the lower die 3.
At this time, as shown in FIG. 5, the supply amount of the material to be crushed is determined by moving the position of the supply device 34 up and down. In FIG. 5A, the lower end of the supply pipe 32 is in sliding contact with the lower mill 3. The supply amount is the case where the supply amount is supplied from the gap between the lower end of the supply pipe 32 and the groove of the sliding contact surface of the lower mortar 3 while being in contact with the surface, and the supply amount is the smallest. FIG. 5B shows a state where the lower end of the supply pipe 32 is slightly separated from the sliding contact surface of the lower die 3 and is supplied from a gap between the lower end of the supply tube 32 and the sliding contact surface of the lower die 3 and the groove of the sliding contact surface. The supply is slightly increased. FIG. 5C shows a state where the lower end of the supply pipe 32 is further away from the sliding contact surface of the lower die 3 and is supplied from the gap between the lower end of the supply tube 32 and the sliding contact surface of the lower die 3 and the groove of the sliding contact surface. The supply amount is further increased.

  As shown in FIG. 5 (d), a notch 35 is provided at the lower end of the supply pipe 32, and fine adjustment is further performed when the supply pipe 32 is brought as close as possible to the sliding contact surface of the lower mill 3 to reduce the supply amount. can do. Further, instead of the notch 35, the lower end of the supply pipe 32 may be an inclined surface 36 as shown in FIG.

The pulverized pulverized material falls into the pulverized material receiving portion 25 from the outer peripheral side between the sliding contact surface of the upper die 5 and the sliding contact surface of the lower die 3. At this time, since a collar 16 is provided that is fitted to the rotary shaft 10 and covers the gap between the upper portion of the through hole 3a of the lower die 3 and the rotary shaft 10, the object to be crushed and the pulverized material pass through the lower die 3. It does not enter between the hole 3 a or the sleeve 9 of the lower mortar holder 4 and the rotary shaft 10.
Further, since the crushed material receiving portion 25 is provided with a cylindrical inner guide 22 surrounding the rotating shaft 10 side, the crushed material does not enter from the gap between the rotating shaft 10 and the upper plate 20 of the gantry 8.
The crushed material is moved by the blades 27 of the discharger 28 attached to the lower mortar holder 4 and rotating with the rotation of the lower mortar unit 1. It is discharged to the outside through.

Next, when inspecting and maintaining the used stone mill, first, the upper mill unit is lifted and removed first, but at the same time as the engaged portion 15a of the rotation stop member 15 is detached from the column 14, the upper mill unit is removed. The two holder spindles 12 can be easily removed from the sleeve bearing 11 fitted in the spindle hole 10 a at the upper end of the rotary shaft 10. At this time, the collar 16 is also removed.
Further, the lower mortar unit 1 is removed from the rotary shaft 10, but can be easily moved in the vertical direction by the sleeve 9 between the lower mortar unit 1 and the rotary shaft 10. Since it removes from the protrusion 18 of the holder support part 7 fitted in the fitting hole 4b provided in the lower surface of the holder 4, it can remove easily.

  Then, the sliding surfaces of the removed upper die 5 and lower die 3 and the collar 16 are cleaned. Further, since foreign matter such as friction scraps of the sleeve bearing 11 is dropped from the through hole 10b below the spindle hole 10a into the gap between the rotary shaft 10 and the lower mill 3, the friction scraps are also cleaned. Further, when the upper mill 5 is removed, etc., the crushed material that has entered the spindle hole 10a and the frictional debris of the sleeve bearing 11 and the rotary shaft 10 are also cleaned.

As described above, the lower mill unit 1 including the lower mill 3 having the through hole 3a at the center and the lower mill holder 4 integrally fixed to the lower part of the lower mill 3, and the upper mill 5 having the through hole 5a at the center. And an upper die unit 2 composed of an upper die holder 6 integrally fixed to the upper portion of the upper die 5 and a fitting hole at the center, and the lower portion of the lower die holder 4 of the lower die unit 1 is fixedly supported. The holder support portion 7 and the lower portion are supported by the rotation driving means attached to the gantry 8, and the intermediate portion is fitted into the fitting hole provided in the center portion of the lower mortar holder 4 and the fitting hole of the holder support portion 7. The upper part is inserted into the through-holes 3a and 5a of the lower mill 3 and the upper mill 5, and the rotary shaft 10 having the spindle hole 10a at the upper end and the lower end is fitted into the spindle hole 10a at the upper end of the rotary shaft 10. Inserted into the sleeve bearing 11 and the upper end is the upper die A holder spindle 12 fitted in a fitting hole 6a provided at the center of the upper mortar holder 6 of the knit 2 and a rotation stop means 13 for preventing the upper mortar unit 2 from rotating; Since the lower mill unit 1 is rotated by sliding the upper mill 5 and the lower mill unit 1 in sliding contact, the upper mill unit 2 and the lower mill unit 1 can be easily disassembled. The upper mill unit 2 and the lower mill unit 1 is relatively rotatable on the coaxial line with high accuracy.
Further, due to the sleeve bearing 11, the upper mill unit 2 does not come into contact with the rotary shaft 10 and exists at the center of rotation. As a result, the upper die 3 is always located at the center of rotation, and the upper die 5 and the lower die 3 can slide accurately.

  Further, since the through hole 10b that intersects the axial direction is provided in the lower part of the spindle hole 10a of the rotating shaft 10, foreign matter that has entered the spindle hole 10a can be eliminated.

  Further, since the collar 16 is provided so as to be fitted to the rotary shaft 10 and cover the gap between the upper portion of the through hole 3a of the lower die 3 and the rotary shaft 10, the object to be crushed and the pulverized material are passed through the through hole 3a of the lower die 3 and It can be prevented from entering between the sleeve 9 of the lower mortar holder 4 and the rotary shaft 10.

  The anti-rotation means 13 includes a support column 14 erected on the frame and an anti-rotation member 15 attached to the upper mortar holder 6, and engages with the upper portion of the support column 14 and the end of the anti-rotation member 15. Since the engaging part to be engaged or the engaged part is provided, the upper mill unit 2 can be fixed in a configuration in which the engaging part can be easily removed.

  Further, the rotation stop means 13 includes a column 14 having an arm 44 that is erected on the gantry 8 and that can rotate in the vertical direction at an upper end portion thereof, and a rotation stop member 45 attached to the upper portion of the upper mortar holder 6. Since the engaging portion or the engaged portion to be engaged with each other is provided at the end portion of the arm 44 and the rotation stop member 45, the upper mill unit 2 can be fixed in a configuration in which the engaging portion can be easily removed.

  Since the engaged portion is U-shaped and the engaging portion is a rod-shaped member that engages with the engaged portion, a simple configuration can be achieved.

  The lower part is fixed to the upper plate 20 of the gantry 8, and the lower part is fixed to the upper plate 20 of the cylindrical outer guide 21 and the upper plate 20 of the gantry 8, which surround the outer periphery of the lower mortar unit 1 and the upper mortar unit 2. A cylindrical inner guide 22 that surrounds the rotary shaft 10 at a position substantially along the outer periphery of the lower mill 3 between the lower portion of the holder 4 and the upper plate 20 of the gantry 8, and a guide between the outer guide 21 and the inner guide 22. The crushed material receiving part 25 comprising the upper plate 20a, the discharge hole 20b provided in the upper plate 20a between the guides, the discharge part 24 comprising the discharge pipe 23 connected to the discharge hole 20b, and the lower mortar holder 4 The cylindrical support part 26 provided on the outer periphery of the cylindrical support part 26 and the blades 27 provided at the lower part of the cylindrical support part 26 are moved by the rotation of the lower mill unit 2 and are crushed by the pulverized product receiving part 25. And a discharge device 28 for discharging the discharge portion 24 from the discharge portion 24. Since the id 22 prevents the pulverized material from entering through the gap between the rotary shaft 10 and the upper plate 20 of the gantry 8, troubles such as a bearing and an electric motor can be prevented, and the pulverized material can be discharged efficiently. .

  A supply pipe 34 including a supply pipe 32 inserted into a supply hole 31 provided in the upper mill unit 2 and a hopper 33 provided at an upper portion of the supply pipe 32 is provided. Since the supply amount of the object to be crushed is changed by changing the distance between the lower end and the upper surface of the lower mill 3 from the close state, the supply amount of the object to be pulverized can be finely adjusted to 0 to 100% with a simple structure. Can do.

  Since the notch 35 is provided at the lower end portion of the supply pipe 32, fine adjustment can be made when the supply pipe 32 is brought close to the sliding contact surface of the lower die 3 to reduce the supply amount, and the upper and lower dies 5, The direct contact between the three surfaces can be prevented.

  Since the lower end portion of the supply pipe 32 is inclined, fine adjustment can be made when the supply pipe 32 is brought as close as possible to the sliding contact surface of the lower die 3 to reduce the supply amount, and the surfaces of the upper and lower dies 5, 3 Can prevent direct contact.

It is principal part sectional drawing of the stone mill which shows embodiment of this invention. It is a top view of the rotation stop means of the stone mill which shows embodiment of this invention. It is a partial side view of the anti-rotation means of the stone mill which shows embodiment of this invention. It is sectional drawing of the ejector of the stone mill which shows embodiment of this invention. It is operation | movement explanatory sectional drawing of the feeder of the stone mill which shows embodiment of this invention.

Explanation of symbols

1 Lower die unit, 2 Upper die unit, 3 Lower die, 3a Through hole, 3a, 5a Through hole, 4 Lower die holder, 4a Through hole, 4b Fitting hole, 5 Upper die, 5a Through hole, 6 Upper die holder , 6a fitting hole, 7 holder support portion, 7a fitting hole, 8 mount, 10 rotating shaft, 10a spindle hole, 10b through hole. DESCRIPTION OF SYMBOLS 11 Sleeve bearing, 12 Holder spindle, 13 Anti-rotation means, 14 Support | pillar, 15 Anti-rotation member, 15a Engagement part, 15b Hole, 16 Collar, 18 protrusion, 20 Upper board, 20a Upper board between guides, 20b Discharge hole, 21 Outer guide, 22 Inner guide, 23 Discharge pipe, 24 Discharge part, 25 Crushed material receiving part, 26 Cylindrical support part, 27 Blades, 28 Discharger, 31 Feed hole, 32 Feed pipe, 33 Hopper, 34 Feeder, 35 Notch, 36 Inclined surface, 41 Anti-rotation means, 42 Bearing, 43 Rotating shaft, 44 Arm, 45 Anti-rotation member, 45a Engaged part.

Claims (10)

A lower die unit comprising a lower die having a through hole in the center and a lower die holder integrally fixed to the lower portion of the lower die;
An upper die unit comprising an upper die having a through hole in the center and an upper die holder fixed integrally to the upper portion of the upper die;
A holder support portion having a fitting hole in the center, and fixedly supporting the lower portion of the lower mortar holder of the lower mortar unit;
The lower part is supported by the rotation driving means attached to the gantry, the middle part is fitted into the fitting hole provided in the center part of the lower mortar holder and the fitting hole of the holder holding part, and the upper part is the lower mortar. And a rotating shaft passed through each through hole of the upper die,
A spindle hole provided at the upper end of the rotating shaft;
A holder spindle in which a lower end portion is inserted into a sleeve bearing fitted in a spindle hole in an upper end portion of the rotating shaft, and an upper end portion is fitted in a fitting hole provided in the center of the upper die holder of the upper die unit When,
Rotation stopping means for preventing rotation of the upper mill unit;
With
A stone mill characterized in that the lower mill unit is rotated by sliding the upper mill of the upper mill unit and the lower mill of the lower mill unit in sliding contact.   The stone mill according to claim 1, wherein a through hole intersecting with the axial direction is provided in a lower portion of a spindle hole of the rotating shaft.   The stone mill according to claim 1 or 2, further comprising a collar fitted to the rotation shaft and covering a gap between an upper portion of the through hole of the lower mill and the rotation shaft. The rotation stop means includes a support column erected on the gantry,
An anti-rotation member attached to the upper mill holder;
With
The stone mill according to any one of claims 1 to 3, wherein an engaging portion or an engaged portion is provided at the upper portion of the support column and the end portion of the rotation stopper member. The anti-rotation means is erected on the gantry and has a support column having an arm that can rotate in the vertical direction at the upper end portion;
An anti-rotation member attached to the upper part of the upper mill holder;
With
The stone mortar according to any one of claims 1 to 3, wherein an engaging portion or an engaged portion that engage with each other is provided on the arm and the end of the rotation stopper member.   The stone mortar according to claim 4 or 5, wherein the engaged portion is U-shaped, and the engaging portion is a rod-like member engaged with the engaged portion. A cylindrical outer guide having a lower part fixed to the upper plate of the gantry and surrounding the lower mortar unit and the upper mortar unit apart from each other,
A cylindrical inner guide that surrounds the rotary shaft side at a position substantially along the outer periphery of the lower ace between the lower portion of the lower mortar holder and the upper plate of the pedestal, with the lower portion fixed to the upper plate of the pedestal,
An upper plate between guides between the outer guide and the inner guide;
A pulverized material receiving portion comprising:
A discharge portion comprising a discharge hole provided in the upper plate between the guides and a discharge pipe connected to the discharge hole;
It consists of a cylindrical support part provided on the outer periphery of the lower mortar holder and a blade provided at the lower part of the cylindrical support part, and the blade moves in the crushed material receiving part by the rotation of the lower mortar unit. And a discharger for discharging the pulverized material of the pulverized material receiving part from the discharge part,
The millstone according to claim 1, comprising: A supply pipe inserted into a supply hole provided in the upper mill unit;
A hopper provided at the top of the supply pipe;
Comprising a feeder consisting of
The supply amount of the object to be crushed is changed by changing the distance between the lower end of the supply pipe of the feeder and the upper surface of the lower die from a close state. Stone mill.   The stone mill according to claim 8, wherein a notch is provided at a lower end of the supply pipe. The stone mill according to claim 8, wherein a lower end portion of the supply pipe is inclined.

Images