JP2009248072A - Grain mill - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grain mill which can be made light in weight and miniaturized and is suitable for a household use. <P>SOLUTION: The grain mill has a rotary lower mortar 8 provided with a lower side grinding surface 8a having first groove lines V1 in an outer peripheral direction from the center side in a tapered shape protrusion upwards, and a fixed upper mortar 6 provided with an upper side grinding surface having second groove lines in the outer peripheral direction from the center side in a tapered shape recess downwards and facing the lower side grinding surface 8a, and a grain dropping through-hole 6c along the rotation center line of the rotary lower mortar. The lower end of a bearing housing 12 is an oblique end face 12a bonded to the wedge surface of a wedge block, and a facing gap between the lower side grinding surface 8a and the upper side grinding surface 6d can be adjusted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a flour mill for milling grains such as buckwheat, rice, wheat and beans, and more particularly to a flour mill suitable for home use.

Conventionally, as this type of milling machine, as disclosed in JP-A No. 2001-137728, a fixed lower die and a rotating upper die are provided, and a soup to a vertical hole provided at a position eccentric from the rotational center of the rotating upper die. The buckwheat flour is sent out from the center of the tapered rubbing surface radially outward while dropping the grain and guiding it to the tapered rubbing surface of the rotating upper die and the fixed lower die for initial crushing and rubbing. It has become.
JP 2001-137728 A (FIGS. 1 and 2)

  Although the above milling machine does not need to manage the gap between each other due to the weight of the upper mill on the tapered rubbing surface, the rotating upper mill and the fixed lower mill are heavy on the stone mill, leading to an increase in weight and size. It is a form unsuitable as a home-use flour mill that requires the Moreover, the structure of the grain supply apparatus which drops the grain from a grain hopper into the vertical hole of the eccentric position of a rotation upper die is large.

  Then, in view of the said problem, the subject of this invention is providing the flour mill suitable for household use which can be reduced in weight and size.

  In order to solve the above-described problems, a mill according to the present invention includes a rotating milling die having a convex upper taper shape and a lower rubbing surface, and an upper rubbing surface having a concave taper shape and facing the lower rubbing surface. And a fixed upper die having a grain dropping through hole along the rotation center line of the rotating lower die, and an opposing gap adjusting means capable of vertically moving the rotating lower die.

  For example, when milling unshelled grains, the particle size is still large, so after operating the facing gap adjusting means and lowering the rotating millstone to set the facing gap between the lower rubbing surface and the upper rubbing surface large, When rotating the lower mill and driving the grain into the drop-through hole, the grain is drawn into the rotating lower rubbing surface and coarse powder is crushed between the upper rubbing surface and the coarse powder. Sent out in the direction. Next, the facing gap adjusting means is operated to raise the rotating lower die to set the facing gap between the lower rubbing surface and the upper rubbing surface to be small, and then the coarse powder is dropped into the grain and re-entered into the through hole. By charging, fine powder can be obtained this time. Further, even when the grain size is different such as rice grain and bean grain, optimum milling can be realized by appropriately operating the opposing gap adjusting means.

  As described above, in the present invention, since the lower pestle is used as the rotary mortar and the opposing gap adjusting means capable of vertically moving the lower mortar is provided, the drive transmission mechanism from the electric motor disposed below the lower dies can be simplified and fixed. Since the grain hopper can be directly placed on the grain dropping through-hole of the upper mill and the milling machine can be reduced in size and weight, a lightweight and miniaturized household mill can be provided.

  The lower rubbing surface can be configured to have a plurality of first grooves from the center side toward the outer circumferential direction, and the upper rubbing surface can be configured to have a plurality of second grooves from the center side toward the outer circumferential direction. Since the lower rubbing surface has an upwardly convex taper shape, and the lower rubbing surface rotates, the peripheral speed of the outer peripheral side increases, so that the coarse powder is easily shaken off and discharged. Therefore, it is desirable to provide a compression means for temporarily retaining the pulverized material on the lower rubbing surface on the outer peripheral side of the rotating lower die. As this compression means, it can be set as the 1st collar part projected on the outer peripheral side of the rotary lower die. Since the pulverized material flowing down on the tapered lower rubbing surface temporarily stops on the first brim portion to form a powder pool and is pressed, the swing-off discharge action is weakened and the rubbing time is increased. Fine powder can be obtained. In order to further delay the discharging action, it is desirable that the first groove extends in the first flange portion. This is because the ratio of the powder sent on the first flange portion in the circumferential direction is increased by the first groove.

  Corresponding to the first buttocks, the fixed upper die desirably has a second buttocks facing the first buttocks. In order to perform the rubbing action also on the first flange, it is desirable that the second groove is extended to the second flange.

  In order to further improve the milling performance, it is desirable that the lower rubbing surface or the upper rubbing surface is a rough surface in which small diameter dents are distributed in a scattered manner. Although fine powder can be obtained by the operation of the opposed gap adjusting means, particularly in buckwheat milling, there is a tendency to prefer that a slightly coarse powder is mixed. Therefore, it is desirable to provide a plurality of cutout portions around the outer periphery of the first flange. Since the powder falling into the notch is not affected by the rubbing action on the first heel part, the ratio of the coarse powder is increased, so that buckwheat milling in which the coarse powder is also appropriately mixed is possible.

  When the grain is guided to the gap between the lower rubbing surface and the upper rubbing surface through the grain dropping through hole, clogging of the grain tends to occur on the center side of the lower rubbing surface even if the opposing gap is widened, The initial crushing load is large and inefficient. Therefore, a pre-grinding body that rotates integrally with the rotational millstone at the top of the rotating millstone and has a plurality of inclined external teeth that are steeper than the taper of the lower rubbing surface, and It is desirable that the lower upper feed roll is fixed on the upper side, and the fixed upper die has inclined internal teeth opposed to the inclined external teeth. Due to the forced feeding action by the lower feed roll and the pre-grinding treatment of the rotating pre-grinding body and the inclined internal teeth, clogging of the grains can be effectively prevented, and the grinding performance is greatly improved.

  It is desirable that the inclination of the inclined internal teeth is steeper than the inclination of the inclined external teeth. The interval between the inclined teeth and the inclined teeth can be gradually narrowed as it goes downward in the axial direction, and the clogging of the grains can be further prevented. Moreover, when the drop groove for large grains is formed in the hole wall of the grain drop through hole, large grains such as soybean can be dropped smoothly.

  It is suitable to make the rotating lower die and the fixed upper die made of metal with a thin wall thickness to promote weight reduction, but the heat capacity of the heat sink is lower than that of the stone die, so it will be pulverized in long-term operation of mass processing The temperature rises with heat and frictional heat. Therefore, as a cooling means, it is desirable that the back side of the rotating lower die or the front side of the fixed upper die has a large number of heat radiation fins. The frictional heat generated on the rubbing surface and the pre-ground body can be dissipated, the low temperature below the body temperature can be maintained, and a fine powder can be obtained. In addition, since many radiating fins of a rotating lower die also function as a blower fan, the air cooling effect is great. If necessary, an accommodating portion such as a cold insulation material pack may be formed on the fixed upper die.

  Here, as a fixed structure of the fixed upper die, it is desirable to have a fixed base having an annular wall for placing the outer peripheral side of the fixed upper die, and a clamping means for pressing the fixed upper die into the annular wall from above. This is because the upward reaction force acting on the fixed upper die during rubbing is suppressed to prevent slight lifting.

  Since the rotary lower die requires rotational movement and vertical movement in the direction of the rotation center line, the upper end of the rotary lower die is fixed to the center of the back side and the lower base of the rotary shaft is fixed. It can be configured to have a shaft coupling provided at the upper end of the driving shaft and capable of displacing the rotating shaft in the thrust direction. The opposing gap adjusting means is preferably a booster mechanism that moves the bearing housing of the rotating shaft up and down. This is because the opposing gap can be easily adjusted manually. In order to suppress the downward reaction force acting on the rotating lower die during rubbing, it is desirable that the booster mechanism is a wedge mechanism.

  In other words, the preferred milling machine according to the present invention has a tapered shape that is convex upward, and the lower steep pulverization part, the lower gentle inclination pulverization part, and the lower flat pulverization from the center side to the radially outward direction. A rotating lower mortar having a lower feed roll at the top, a concave taper on the bottom, and an upper steep pulverizing part and a lower gently inclined pulverizing part facing the lower steep pulverizing part A fixed upper die having a grain dropping through hole having an upper flat pulverizing portion and an upper flat pulverizing portion facing the lower flat pulverizing portion and containing a lower feed roll, and an opposing gap capable of vertically moving the rotating lower mortar And adjusting means.

  According to the present invention, since the lower pestle is used as a rotary mortar and the lower dies can be moved up and down, an opposing gap adjusting means is provided, so that the milling machine can be reduced in size and weight, and a milling machine suitable for home use is provided. it can.

  Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an external perspective view showing a state in which a grain hopper of a home flour mill according to an embodiment of the present invention is removed, FIG. 2 is a perspective view showing a state in which the housing of the home flour mill is removed, and FIG. FIG. 4 is an exploded perspective view of the flour milling body, FIG. 5 is a partially cutaway perspective view of the flour milling body, and FIG. 6 is a rotating lower mill assembly of the flour milling body. FIG. 7 is a plan view showing a pre-grinding body used in the same rotating lower mortar assembly, FIG. 8 is a perspective view of the fixed upper mortar of the milling body viewed from the back side, and FIG. 9 is A in FIG. FIG. 10 is an arrow view showing a state cut along line BB ′ in FIG. 3, and FIG. 11 shows an outer peripheral side portion of the same rotary lower mortar assembly. It is a fragmentary sectional view.

Mill of the present embodiment, as shown in FIG. 1, a base annular wall 7c installed fixed on the top surface of the housing B having the Konado adjusting dial D ₁ and timer dial D ₂ on the sides, the base annular wall 7c and a fixed upper die 6 fixed on the outer peripheral side. In order to make the fixed upper die 6 detachable, two clamping mechanisms 20 are provided. Each clamp mechanism 20 includes a presser plate 23 that can be turned around a mounting screw 22 that is screwed to the upper part of a support shaft 21, and a notch that is screwed to the upper part of a column 24 and is formed on the free end side of the presser plate 23. It has a presser screw 25 with which the part 23a engages, and the central part of the presser plate 23 elastically presses the upper flange 6e of the fixed upper die 6 from above. A grain hopper (not shown) can be detachably installed on the central tube portion 6 b protruding upward from the central portion of the fixed upper die 6. In addition, 25a is a powder discharge port provided in the collar portion of the concave side surface 25.

  As shown in FIG. 2 with the casing B removed, the mill includes a gear box 2 attached integrally with the electric motor 1, a wedge block 3 that can slide on the gear box 2, and the wedge. And a milling body 4 supported on the block 3. As shown in FIG. 4, the milling body 4 includes a rotary lower die assembly 5 and a fixed upper die 6, and the rotary lower die assembly 5 includes a fixed base 7, a rotary lower die 8, a weir ring 9, and a pre-grinding body. 10 and a downward feed roll 11.

The fixed base 7 integrally has a base annular wall 7c for supporting the upper flange 6e of the fixed upper die 6 and an end plate portion 7b having a boss portion 7a for inserting the bearing housing 12 on the outer peripheral side. A dust drop port 7d is formed near the base annular wall 7c in 7b. The fixed base 7, the fixed upper die 6 and the grain hopper are supported on the casing B in a stacked manner. A bearing housing 12 that is displaceable in the thrust direction is inserted through the boss portion 7a. The bearing housing 12 accommodates a radial bearing 14, and the lower end of the bearing housing 12 is an inclined surface 12 a that engages with the wedge surface 3 a of the wedge block 3, thereby constituting a booster mechanism. As will be described later, the upper end portion of the shaft portion 13 that is rotatably supported by the radial bearing 14 is connected to the rotary upper die 8 side, and the lower end portion of the shaft portion 13 is the output of the speed reducer in the gear box 2. The shaft coupling 13a meshes with a shaft coupling (not shown) of a certain driving shaft. The shaft coupling 13a transmits a rotational force from the driving side shaft coupling and has a meshing depth displaceable in the thrust direction. Therefore, by turning the Konado adjusting dial D ₁ manually, since the bearing housing 12 and at the same time the wedge block 3 is slid in the arrow A direction in FIG. 2 moves up and down in the direction of arrow B in FIG. 2, the shaft Since the portion 13 follows the bearing housing 12 and moves up and down, the rotary lower die 8 side also moves up and down. Since the booster mechanism of the wedge mechanism is used, the vertical movement operation on the rotary lower mortar 8 side is facilitated, and the supporting durability is provided.

As shown in FIGS. 3 to 6, the rotary lower die 8 has a lower rubbing surface (lower gently inclined pulverization) having a plurality of first grooves V ₁ from the center side toward the outer peripheral direction with a taper shape convex upward. Part) 8a is a metal (casting product) umbrella type, and has a shaft hole 8c through which the upper end side of the shaft part 13 is inserted and two planting pins P in the center surface 8b. The first groove V ₁ is linear, but is slightly skewed counterclockwise from the center of rotation in a plan view of the rotary upper die 8. A dam ring 9 as a lower flange is fitted on the outer peripheral surface of the rotating lower die 8 and is screwed with a set screw 9a. As shown in FIG. 11, the inner peripheral surface 9b of the damming ring 9 closes the groove opening Q of the first outer peripheral side of the groove line V _1. As shown in FIG. 3, a sweeping member 9 c is screwed to the lower surface of the weir ring 9 that rotates together with the rotating lower die 8.

The pre-grinding body 10 integrally has a plurality of oblique external teeth (lower steeply inclined pulverized portion) G on the lower side of the cylindrical portion 10a, and the oblique external teeth G are shown in FIG. 9 or FIG. shown as made of the circumscribed circle C ₁ or C ₂ and the front edge step surface S ₂ of the rotating direction of the arcuate surface S ₁ on the border passing through the anti-rotation direction of the trailing edge slope surface S ₃ Prefecture, the leading edge step surface S ₂ forming an outer longitudinal groove W at a trailing edge slope surface S _3. The inclination of the inclined tooth G is steeper than the taper of the lower rubbing surface 8a. This pre-grinding body 10 is inserted into the planting pin P on the central surface 8b of the rotating lower die 8 and is prevented from rotating.

  The lower feed roll 11 includes a hollow portion 11a that fits around the cylindrical portion 10a of the front pulverized body 10, a left screw lead screw groove 11b on the outer peripheral surface, and a radially outward direction from the cylindrical portion 10a of the front pulverized body 10. And a notch K that is latched to the rotation prevention pin p protruding to Note that the pre-grinding body 10, the rotary lower die 8 and the fixed base 7 are all assembled together by simply screwing the fastening bolt 10b into the screw hole 13b of the shaft portion 13 through the inside of the cylindrical portion 10a.

As shown in FIGS. 3 and 8, the fixed upper die 6 is composed of an umbrella-shaped portion 6a and a multistage tapered central tube portion 6b extending upward from the central portion thereof. The bottom surface of the umbrella portion 6a, a second upper rubbing surface having a groove line V ₂ (upper gentle slope crushing section) 6d toward the outer circumferential direction from the center side in the concave tapered down, rotating lower die 8 The upper rubbing surface 8a is covered. The second groove line V ₂ is linear, slight skew hanging from the rotation center in plan view of the stationary upper die 8 in the clockwise direction. The engagement pin 7e of the base annular wall 7c of the fixed base 7 is fitted in the engagement hole h of the upper flange 6e of the umbrella-shaped portion 6a. The hollow of the central pipe portion 6b is a grain drop through hole 6c. Helical shaped internal teeth on a portion to contact the second center side of the groove line V ₂ away opposite the helical shape external teeth G of the hole wall of the grain dropped inclusive hole 6c (upper steep slope grinding zone) g is formed. As shown in FIG. 9 or FIG. 10, the inclined internal teeth g have a step surface S ₂ ′ and a gradient surface S in the rotational direction at the arc surface S ₁ ′ passing through the inscribed circle C ₁ ′ or C ₂ ′. ₃ ′, and the step surface S ₂ ′ and the gradient surface S ₃ form an inner longitudinal groove W ′. The inclination of the inclined internal teeth g is steeper than the inclination of the inclined external teeth G.

  Here, the wedge surface 3a of the wedge block 3 and the inclined surface 12a of the lower die assembly 5 constitute an opposing gap adjusting mechanism. When the wedge block 3 is operated and moved laterally, the bearing housing 12 moves up and down. Then, the rotary lower die assembly 5 also follows this. For this reason, the opposing gap (gap) between the lower rubbing surface 8a of the rotating lower mill 8 and the upper rubbing surface 6d of the fixed upper mill 6 can be adjusted.

For example, since a large particle size in the case of pulverizing the stripped buckwheat, by operating the wedge block 3 in Konado adjustment dial D _1, and the lower rubbing surface 8a lowers the rotating lower die assembly 5 and upper rubbing surface 6d after set large opposing gap, when the rotating lower die 8 in a timer dial D ₂ driven to rotate to introduce the real peeled from grain hoppers (not shown) to the grain dropped inclusive hole 6c, the lower rotating Coarse powder is sent out in the outer circumferential direction while being peeled into the rubbing surface 8c and being crushed between the upper rubbing surface 6d. Next, by raising the rotating lower die 8 and setting the opposing gap between the lower rubbing surface 8a and the upper rubbing surface 6d to be small, the coarse powder is reintroduced into the grain dropping through hole 6c, This time fine powder can be obtained. Moreover, since the opposing gap can be adjusted even for rice grains and bean grains having different particle sizes, fine powder can be produced.

Since the skew of the first groove V _{1 and} the skew of the second groove V ₂ are opposite to each other, the first groove V ₁ and the second groove V ₂ cross each other on the rubbing surface, and the intersection is dispersed. Therefore, the rotation of the rotary lower die 8 is stable.

  Thus, in this example, since the lower mortar 8 is used as the rotary mortar and the opposing gap adjusting means for vertically moving the lower mortar 8 is provided, the size and weight of the flour mill can be reduced, and a home flour mill can be provided. Moreover, since the lower mill 8 is a rotary mill, the drive transmission mechanism from the electric motor 1 arrange | positioned under the lower mill 8 can be simplified. Since the fixed upper die 6 is supported by the fixed base 7 and the casing B, the grain hopper can be directly placed on the grain dropping hole.

Further in this embodiment, since the rim 9 dammed closing the outer circumferential side of Mizoguchi Q of the first groove line V ₁ fitted around an outer peripheral surface of the rotary lower die 8 is attached, as shown in FIG. 11, center Since the powder M guided from the side to the outer peripheral side is blocked by the blocking rim 9 and temporarily stagnates, a powder pool is formed between the blocking rim 9 and the upper flange 6e. A compression force is applied to the pulverization space sandwiched between the rubbing surface 8a and the upper rubbing surface 6d, and the powder does not flow out to the outer peripheral side while being coarse, so that the pulverization performance is improved. In particular, since the grain to be boosted at the leading edge step surface S ₂ of the helical teeth-like external teeth G is hit the step surface S ₂ of the helical teeth like the teeth g, a large effect of crushing the grains.

  In this example, the front pulverized body 10 that rotates integrally with the rotary lower mortar 8 at the top of the rotary lower mortar 8 and has the inclined external teeth G that are steeper than the taper of the lower pulverized surface 8a; Since the feed roll 11 fixed to the upper side of the pre-grinding body 10 is provided, clogging hardly occurs on the center side of the lower rubbing surface 8a, and the grinding performance is improved. In addition, since the interval between the inclined internal teeth g and the inclined external teeth G becomes gradually narrower as it goes downward in the axial direction, clogging of the grains can be further prevented.

  12 is a bottom view showing a modified example of the fixed upper die, FIG. 13 is a perspective view showing the back side of the fixed upper die according to the modified example, FIG. 14 is a perspective view showing the back side of the fixed upper die, and FIG. FIG. 16 is a perspective view showing the back side of a rotating lower mortar according to the modified example.

The fixed upper die 6 shown in FIG. 8 has an annular protrusion 6f fitted into the base annular wall 7c of the fixed base 7 on the back surface of the upper flange 6e, and only the back surface of the tapered umbrella-shaped portion 6a is the upper rubbing surface. Although a 6d, fixed on die 6 of the present embodiment 'is have been removed the annular projection 6f, and the second groove V ₂ extends up to the upper flange 6e, also the rear surface of the upper flange 6e upper It is a rubbing surface (upper flat pulverized portion). Further, as shown in FIG. 13, the entire upper rubbing surface 6d is a rough surface in which dents R having a diameter smaller than the groove width of the _second groove V2 are distributed in a scattered manner. The recess R, in the cutting smooth surface forming the second groove line V ₂ is subjected to such scalped processed casting, for example, can be obtained by performing sandblasting average particle size 1.7 mm. Further, a dropping groove 6g for soybean is formed in the hole wall of the central tube portion 6b. For this reason, the introduction of soybeans and crushing with the pre-ground body 10 are facilitated. A large number of radiation fins 6h are formed radially from the central tube portion 6b on the front side of the fixed upper die 6 '.

The stationary upper die 6 'to, the rotating lower die 8 which are improved' are integrally has a lower flange 8d facing portion above the flange 6e, a second groove line V ₁ is up to the lower flange 8d The surface of the lower flange 8d is also rubbed on the lower side (lower flat pulverized surface). Further, the entire surface of the lower rubbing surface 8a is a rough surface in which dents R having a diameter smaller than the groove width of the _first groove V1 are distributed in a scattered manner. The recess R may also be in the cutting smooth surface which second to form a groove line V ₂ is subjected to such scalped processed casting, for example, be subjected to sandblasting with an average particle diameter of 1.7 mm. Notch portion 8e in the first 4 Article intervals groove line V ₁ is provided on the outer peripheral edge of the lower flange 8d. A large number of radiating fins 8f are formed radially from the central annular wall 8g on the back side of the rotating lower die 8 '.

The powder that flows down on the tapered lower rubbing surface 8a temporarily stops on the lower flange 8d to form a powder pool and is compressed, so that the discharging action is weakened and the rubbing time becomes longer, so that fine powder Can be obtained. Further, since the Mashimashi first groove line V ₁ is extended to the lower flange 8d, it increased the proportion sent to the circumferential direction of the reservoir powder on the lower flange 8d by the first groove line V _1, to prolong the residence time Can do. Furthermore, since the second groove line V ₂ to the upper flange 6e is formed, the active area rubbing wider. Moreover, since the small-diameter dents R are distributed in a scattered manner on the lower rubbing surface 8a and the upper rubbing surface 6d, fine powder can be obtained. Since the powder falling into the notch 8e does not contribute to the rubbing action at the lower flange 8d, the ratio of coarse powder is high and suitable for buckwheat milling mixed with coarse powder.

  By adding the heat radiation fins 6h and 8g, it is possible to dissipate pulverization heat and friction heat generated on the rubbing surfaces 8a and 6d and the pre-grinding body 10, and to obtain a high quality powder while maintaining a low temperature even during a long period of mass processing. it can. In addition, since the radiation fin 8g of the rotating lower die 8 also functions as a blower fan, the air cooling effect is great. Further, if necessary, an accommodation portion such as a cold insulation material pack may be formed on the fixed upper die 6.

It is an external appearance perspective view which removes the grain hopper of the home flour mill which concerns on the Example of this invention, and shows. It is a perspective view shown excluding the housing | casing of the home-use flour mill. It is a longitudinal cross-sectional view which shows the milling main body of the home flour mill. It is a disassembled perspective view of the flour-making body. It is a partially cutaway perspective view of the milling body. It is a perspective view which shows the rotation lower die assembly of the same milling main body. It is a top view which shows the pre-grinding body used for the same rotation lower die assembly. It is the perspective view which looked at the fixed upper die of the same milling body from the back side. It is an arrow line view which shows the state cut | disconnected by the AA 'line | wire in FIG. It is an arrow line view which shows the state cut | disconnected by the BB 'line | wire in FIG. It is a fragmentary sectional view which shows the outer peripheral side part of the same rotation lower die assembly. It is a bottom view which shows the modification of a fixed upper die. It is a perspective view which shows the back side of the fixed upper die which concerns on the modification. It is a perspective view which shows the front side of the same fixed upper die. It is a perspective view which shows the modification of a rotation lower die. It is a perspective view which shows the back side of the rotation lower mill based on the modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electric motor 2 ... Gear box 3 ... Wedge block 3a ... Wedge surface 4 ... Milling body 5 ... Rotating lower mill assembly 6, 6 '... Fixed upper mill 6a ... Umbrella-shaped part 6b ... Central pipe part 6c ... Grain dropping Through-hole 6d: Upper rubbing surface (upper gently inclined grinding part)
6e ... upper flange 6f ... annular projection 6g ... soybean dropping groove 6h, 8f ... heat radiation fin 7 ... fixed base 7a ... boss 7b ... end plate 7c ... base annular wall 7d ... dust drop 7e ... engagement pin 8, 8 '... rotating lower die 8a ... lower rubbing surface (lower gentle inclined grinding part)
8b ... Center surface 8c ... Shaft hole 8e ... Notch 9 ... Damping ring 9b ... Inner peripheral surface 9c ... Sweep member 10 ... Pre-grinding body 10a ... Cylindrical part 10b ... Fastening bolt 11 ... Lower feed roll 11 ... Hollow part 11b ... Lead screw groove 12 ... Bearing housing 12a ... Slope surface 13 ... Shaft portion 13a ... Shaft joint 13b ... Screw hole 14 ... Radial bearing 20 ... Clamp mechanism 21 ... Spin shaft 22 ... Mounting screw 22a ... Notch 23 ... Presser plate 24 ... strut 25 ... cap screw 25a ... powder outlet B ... housing _{C 1,} C 2 _... circumscribed circle _C 1 ', _{C 2'} ... inscribed circle _{D 1} ... Konado adjusting dial _{D 2} ... timer dial G ... Inclined external teeth (lower steep crushing part)
g ... Inclined teeth (upper steep crushing part)
h ... engaging hole K ... cutout M ... powder P ... planting pin p ... locking pin Q ... Mizoguchi R ... small dents S 1 _... arcuate surface S 2 _... leading step surface S 3 _... trailing inclined face S ₁ '... arcuate surface _{S 2'} ... step surface _{S 3} '... inclined face _{V 1} ... first groove line _{V 2} ... second groove line W ... outer longitudinal grooves W' ... Uchitatemizo

Claims (17)

Rotating millstone with convex upper taper and lower rubbing surface, upper rubbing surface with concave taper lower and facing the lower rubbing surface, and grain dropping along the rotation center line of the rotating upper mill A milling machine comprising a fixed upper die having a through hole and an opposing gap adjusting means capable of vertically moving the rotary lower die. 2. The mill according to claim 1, wherein the facing gap adjusting unit includes a pressing unit that temporarily holds the pulverized material on the lower rubbing surface on the outer peripheral side of the rotating lower mill. 3. The flour mill according to claim 2, wherein the pressing means is a first brim projecting to the outer peripheral side of the rotary lower mortar. The flour mill according to claim 3, wherein the first groove extends in the first brim part. 5. The mill according to claim 3, wherein the fixed upper die has a second ridge portion facing the first ridge portion. 6. 6. The flour mill according to claim 5, wherein the second groove extends in the second brim part. The milling machine according to any one of claims 1 to 6, wherein the lower rubbing surface or the upper rubbing surface is a rough surface in which small diameter dents are distributed in a scattered manner. Milling machine. The flour mill according to claim 7, wherein a plurality of cutout portions are provided around an outer peripheral edge of the first brim portion. The flour mill according to any one of claims 1 to 8, wherein the mill rotates at the top of the rotating lower die integrally with the rotating lower die, and is inclined more steeply than the inclination of the lower rubbing surface. A pre-ground body having a plurality of tooth-shaped external teeth, and a lower feed roll fixed to the upper side of the pre-ground body, and the fixed upper die is an oblique tooth shape facing the oblique tooth external teeth A milling machine having internal teeth. The mill according to claim 9, wherein the inclination of the inclined internal teeth is steeper than the inclination of the inclined external teeth. The mill according to claim 9 or 10, wherein a hole wall of the grain dropping through hole has a large grain dropping groove. 12. The flour mill according to claim 1, wherein a back side of the rotating lower die or a front side of the fixed upper die has a large number of heat radiation fins. The flour mill according to any one of claims 1 to 12, wherein a fixed base having an annular wall on which an outer peripheral side of the fixed upper die is placed, and the fixed upper die is pressed against the annular wall from above. A milling machine characterized by having a clamping means. The milling machine according to claim 13, wherein an upper end is fixed to a central portion on the back side of the rotary lower mill and is provided at a lower end of the rotary base and an upper end of the driving shaft. A milling machine characterized in that the rotary shaft has a shaft joint displaceable in a thrust direction. 15. The flour mill according to claim 14, wherein the facing gap adjusting means is a booster mechanism capable of vertically moving a bearing housing of the rotating shaft. The milling machine according to claim 15, wherein the booster mechanism is a wedge mechanism. Rotating lower mill having an upward convex taper, having a lower steep pulverizing portion, a lower gently inclined pulverizing portion, and a lower flat pulverizing portion from the center side to the radially outer side, and a downward feed roll on the top. And an upper steep pulverization part facing the lower steep pulverization part, an upper gentle inclination pulverization part facing the lower gentle inclination pulverization part, and a lower flat pulverization part. A fixed upper die having a grain dropping through hole having an opposed upper flat grinding portion and containing the lower feed roll, and an opposing gap adjusting means capable of vertically moving the rotating lower die. And milling machine.

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