JP2003230842A - Flour milling machine for grain - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flour milling machine for grains capable of always maintaining a constant feed rate of the grains sent from a raw material hopper to a stone mill and easily adjusting the feed rate. <P>SOLUTION: The flour milling machine for the grains equipped with the raw material hopper 21 and a raw material feed pipe 34 to feed the grains supplied into the hopper 21 to the stone mill 22 through the outlet 26 of the hopper 21 is provided with a shutter 27 for adjusting the feed rate to send the grains by a predetermined rate to the outlet 26 of the hopper 21 while the raw material feed pipe 34 is provided with an opening and closing valve 42 to interlock the opening and closing movement of the valve 42 with the rotation of the stone mill 22. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain milling machine, and more particularly to a grain milling machine of the type which grinds grain grains by rotating a stone mill.

[0002]

2. Description of the Related Art Conventionally, as a milling apparatus of this type, FIG.
The one shown in 2 is known. This is a raw material hopper 1 for supplying buckwheat grains, a stone mill 3 installed below the raw material hopper 1 via a raw material supply pipe 2, and an upper mill 3a of the stone mill 3 arranged below this stone mill 3. A vibrating and sieving device 4 for selecting buckwheat flour crushed on the contact surface of the lower mill 3b, a collection box 5 for collecting the selected buckwheat flour, and a trash box 6 for collecting impurities such as cuticles and chaff remaining on the sieve. It is equipped with and. On the outer circumference of the stone mill 3, a powder receiving member 7 for sending out the crushed buckwheat flour is provided all around, and the buckwheat flour is collected by a dust collector 8 moving on the powder receiving member 7. The collected buckwheat flour is led into the vibrating screen device 4 by a powder conduit 9. The vibrating screen device 4 is composed of a screen box 10 in which a mesh of fine mesh is horizontally stretched, and a drive section 11 for applying a reciprocating vibration in the horizontal direction to the screen box 10.

[0003]

However, in the above-mentioned conventional flour milling apparatus, it is not possible to always maintain a constant supply amount of grain grains sent from the raw material hopper to the stone mill, and it is easy to adjust the supply amount. Could not be done.

Therefore, an object of the present invention is to provide a grain-grinding apparatus capable of ensuring a constant supply amount of grain grains fed from a raw material hopper to a stone mill and easily adjusting the supply amount. Especially.

[0005]

In order to solve the above-mentioned problems, a grain-grinding apparatus according to a first aspect of the present invention comprises a raw material hopper and a grain mill charged into the raw material hopper from a feed port of the raw material hopper to a stone mill. In a grain-grain milling apparatus having a raw material supply pipe for supplying to the raw material supply pipe, a feed amount adjusting shutter for feeding a predetermined amount of grain grains to the feed port of the raw material hopper is provided, while an open / close valve is provided in the raw material supply pipe. And the opening / closing operation of the opening / closing valve is interlocked with the rotation of the stone mill.

[0006] According to the present invention, it is possible to always maintain a constant supply amount of grain grains sent from the raw material hopper to the stone mill, and to easily adjust the supply amount, though it is a simple means.

According to a second aspect of the present invention, in the grain grain milling apparatus according to the first aspect, the supply amount adjusting shutter is a rotating body having a concave groove formed on the outer peripheral surface for receiving the grain grains. And

According to the present invention, the grain grain supply amount can be freely adjusted by the size of the groove, the number of grooves, the number of rotations, and the like.

According to a third aspect of the invention, in the grain-graining apparatus according to the first aspect, the opening / closing valve is always spring-biased to close the outlet of the raw material supply pipe, and the spring-loaded valve is interlocked with the rotation of the millstone. It is characterized in that the opening operation is performed when a force in the direction opposite to the bias direction is applied.

According to the present invention, the opening operation of the on-off valve is interlocked with the rotation of the mortar, so that an appropriate amount of grain can be constantly supplied to the mortar.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a grain-graining apparatus according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a schematic front view showing the overall configuration of the flour milling apparatus according to this embodiment, and FIG. 2 is a schematic side view showing the overall configuration of the flour milling apparatus. In the flour milling apparatus according to this embodiment, a funnel-shaped raw material hopper 21 is provided in an upper portion of a housing 20, and an upper mill 22a is provided in an intermediate portion.
A stone mill 22 including a lower mill 22b and a lower mill 22b, and a gear motor 23 for rotating the stone mill 22 are disposed below the stone mill 22. The outer periphery of the housing 20 is covered by panels (not shown), and can be moved by casters 24 provided at the four corners.

The buckwheat grain inlet provided in the upper part of the raw material hopper 21 is opened and closed by an upper lid 25, and a tapered buckwheat grain outlet 26 is formed in the lower part, and the supply amount is adjusted to this outlet 26. A shutter 27 is attached. As shown in FIGS. 1 and 2, the supply amount adjusting shutter 27 has a casing 28 attached along the lower shape of the raw material hopper 21, and a columnar shape whose front and rear ends are rotatably supported by the casing 28. The shutter main body 29 and the motor 30 that rotationally drives the shutter main body 29 are provided, and the number of rotations of the motor 30 is counted by the photomicrosensor 31. As shown in FIGS. 3 and 4, six concave grooves 32 are formed on the outer peripheral surface of the shutter main body 29 along the circumference, and the buckwheat grains 33 that have entered the concave grooves 32 are
As the shutter body 29 rotates, the shutter body 29 falls from the concave groove 32 and is delivered from the delivery port 26 of the raw material hopper 21. Since the number of buckwheat grains 33 is substantially determined by the size of the concave grooves 32 and the number of the concave grooves 32, the supply amount of the buckwheat grains 33 can be adjusted by controlling the rotation speed of the motor 30.

As shown in FIGS. 1, 2, 5, and 6, a raw material supply for guiding the buckwheat grains 33 sent from the raw material hopper 21 to the stone mill 22 below the supply amount adjusting shutter 27. A tube 34 is provided. This raw material supply pipe 3
4 is an inclined tube 3 with a fixed amount receiving hopper 35 provided on the upper portion
6 and a vertical pipe 37 to which the lower end of the inclined pipe 36 is connected. The lower half of the vertical pipe 37 is inserted into a vertical hole 38 formed in a part of the upper mill 22a, and is fixed around the vertical hole 38 on the upper surface of the upper mill 22a with bolts 39 to hold the raw material supply pipe 34. Has been done. Therefore, the raw material supply pipe 34 has the fixed amount receiving hopper 35 as the center of rotation,
In addition, the upper end of the fixed amount receiving hopper 35 is the supply amount adjusting shutter 2.
The casing 7 is rotated together with the upper mill 22a while maintaining a state of being close to the lower surface of the casing 28.

A vertically movable rod 40 is disposed inside a vertical pipe 37 of the raw material supply pipe 34, and a conical opening / closing valve 42 for opening / closing a lower opening 41 of the vertical pipe 37 is provided at a lower end of the rod 40. Is installed. Further, as shown in FIG. 5, a piston 42 is attached to the upper part of the rod 40, and a spring 44 for constantly urging the piston 42 upward is disposed between the piston 42 and the outer tube 43. A bush 45 is rotatably attached to the upper end of the piston 42. Therefore, the piston 44 is normally pushed up by the spring 44 to raise the rod 40, and the opening / closing valve 42 is pressed against the lower opening 41 of the vertical pipe 37 to close the opening, so that the buckwheat grain 33 sent from the raw material hopper 21 is It accumulates in the raw material supply pipe 34. on the other hand,
Corresponding to the bush 45, an opening / closing dog 47 is attached to the outer peripheral surface of the supply amount adjusting shutter 27 via a stay 46. As shown in FIGS. 5 and 6, the opening / closing dog 47 is provided with the pressing surface 48 of the bush 45. When the opening / closing dog 47 rides on the bush 45, the piston 42 causes the spring 44 to spring. When the rod 40 is pushed down against the force and the rod 40 is pushed down together, the on-off valve 42 opens, and the buckwheat grains 33 accumulated inside the vertical pipe 37 and the inclined pipe 36 fall into the vertical hole 38 of the upper mill 22a. To do.

As shown in FIGS. 1 and 2, the upper mill 22a.
The disk-shaped stone mill 22 composed of the lower mill 22b and the lower mill 22b is the housing 2
It is installed on the table 50 of No. 0, and the upper mill 22a is rotatably mounted on the lower mill 22b. The vertical hole 38 mentioned above penetrates the upper mill 22a and the upper mill 22a and the lower mill 22.
It reaches the contact surface 51 of both of them, where they b rub against each other. The contact surface 51 is inclined slightly downward from the center of the stone mill 22 toward the circumferential direction, and a large number of radial grooves (not shown) are formed on the contact surface 51 from the center toward the circumferential direction. When the upper mill 22a is rotated, the buckwheat flour crushed on the contact surface 51 is sent out in the circumferential direction along the groove.

Further, a powder receiving member 53 is attached to the outer peripheral surface of the lower mill 22b along the circumferential line 52 of the contact surface 51. The powder receiving member 53 is formed of a stainless plate in a channel shape, and is provided in a ring shape over the entire circumference of the lower mill 22b to receive the buckwheat flour sent from the circumferential line 52 of the contact surface 51. Has been. As shown in FIG. 7, the powder receiving member 53 has an opening 54 formed at one location on the circumference. This opening 54
Is formed by obliquely cutting the powder receiving member 53 along the rotation direction of the upper mill 22a indicated by the arrow B. Further, in this embodiment, a powder receiving guide plate 55 is attached below the opening 54. The powder receiving guide plate 55 is made of a substantially triangular flat plate material, and the hypotenuse 56 is oriented in the direction opposite to the cutout 57 of the opening 54, and is inclined downward as shown in FIG. is doing. By having such an opening 54 of the powder receiving member 53 and the powder receiving guide plate 55, buckwheat flour will not fall from the powder receiving member 53 in one place, but will fall in a dispersed state.

Below the powder receiving member 53, the lower mill 2
On the outer peripheral surface of 2b, the powder sieve member 6 concentric with the powder receiving member 53 is provided.
0 is attached. As shown in FIG. 7, this powder sieving member 60 is formed by stretching a stainless net 62 on a channel-shaped frame. Further, as shown in FIG. 2, the frame is provided with a peripheral wall 63 extending below the net 62 to prevent the buckwheat flour screened by the net 62 from scattering. The cross-sectional shape of the powder sieve member 60 is larger than that of the powder receiving member 53. The mesh of the net 62 is the stone mill 22
Although various selections can be made depending on how much is crushed with, the use of a net 62 of about 60 mesh makes it possible to remove smooth buckwheat flour with a good texture.
As shown in FIGS. 1 and 7, at a position slightly rearward of the opening 54 of the powder receiving member 53 with respect to the rotating direction of the upper mill 22a, a part of the powder sieving member 60 is formed of a plate material instead of the net 62. Then, an elliptical hole 64 is opened in this plate material. Below this elliptical hole 64, there is a gutter portion 67 that inclines inward.
Is provided, and the tip of the gutter portion 67 is connected to the dust collecting path 65 for foreign matters formed in the lower mill 22b.

Further, as shown in FIGS. 1 and 2, a ring-shaped powder collecting member 68 is attached to the outer peripheral surface of the lower mill 22b immediately below the powder sieving member 60.
The powder collecting member 68 is formed of a stainless plate material in a channel shape and has substantially the same sectional shape as the powder sieving member 60. Further, as shown in FIG. 8, on the bottom surface of the powder recovery member 68 with respect to the rotation direction B of the upper mill 22a,
An elliptical hole 69 for collecting buckwheat flour is provided at a position slightly forward of the opening 54 of the powder receiving member 53.

The powder receiving member 53, the powder sieving member 60, and the powder collecting member 68, which are arranged on the outer peripheral surface of the lower mortar 22b in upper and lower three stages.
Brush tools 70, 71, and 72 are provided in each of them. Of these, the brush tools 70 and 72 arranged on the powder receiving member 53 and the powder collecting member 68 are attached to one horizontal arm 73 fixed to the upper mill 22a, as shown in FIGS. 9 and 10. The brush 71 attached to the powder sieving member 60 via the different vertical arms 74 and 75 is shown in FIG.
Further, as shown in FIG. 11, it is attached via a horizontal arm 76 and a vertical arm 77 fixed at a position rearward of the horizontal arm 73 with respect to the rotating direction of the upper mill 22a.
In FIG. 1, the brush tool 71 is shown on the opposite side of the other brush tools 70 and 72 for the sake of clarity.

These brush tools 70, 71, 72 move on their respective channel-shaped members by the rotation of the upper mill 22a, and the powder receiving member 53 and the powder collecting member 68 brush the buckwheat powder that has fallen on them. The buckwheat flour that has been collected by the tools 70 and 72 and that has fallen from the opening 54 of the powder receiving member 53 in the powder sieving member 60 is rubbed against the net 62 by the brush tool 71 and is sieved from the mesh. By shifting the attachment positions of the brush tools 70, 72 and the brush tool 71 as in this embodiment, the opening 54
The buckwheat flour that has fallen onto the powder sieving member 60 can be scraped off immediately after that with the brush 71. The brush 71 rubs the buckwheat flour on the net 62, goes around the powder sieving member 60, and
The foreign matters remaining on top of 2 are dropped into the elliptical hole 64 and then returned to the original position. The foreign matter that has fallen into the elliptical hole 64 is collected in the dust collecting path 65 via the gutter 67.

As shown in FIGS. 1 and 2, a gear motor 23 for rotating the upper mill 22a of the stone mill 22 and a rotary drive shaft 80 are disposed below the housing 20. The rotary drive shaft 80 has a shaft hole 8 formed at the center of the lower mill 22b.
Penetrate 1 On the bottom surface of the central portion of the upper mill 22a, a groove receiving portion 8 having a rectangular cross section continuous from the shaft hole 81 of the lower mill 22b.
2 is formed. The groove receiving portion 82 is formed in two steps by providing a step portion 83 in the middle of the side wall, and the rotary drive shaft 80 is formed.
The block-shaped square piece 84 attached to the upper end portion of the above is always fitted into the bottom portion of the groove receiving portion 82, so that the rotation from the rotary drive shaft 80 is transmitted to the upper mill 22a. An outer cylinder tube 85 is provided on the rotary drive shaft 80, and is vertically moved by turning an operation handle 86 provided at a lower portion of the housing 20. When the outer cylinder tube 85 rises, the upper end of the outer cylinder tube 85 abuts against the stepped portion 83 of the groove receiving portion 82, and
By pushing up to separate the upper mill 22a from the lower mill 22b, the groove on the contact surface 51 can be cleaned.

As shown in FIG. 2, a buckwheat flour collection box 87 and a foreign matter collection box 88 are arranged side by side on the lower side of the housing 20, in addition to the gear motor 23 described above.
The buckwheat flour collection box 87 has an elliptical hole 69 of the flour collection member 68.
From the dust collection path 89 to collect foreign matter
8 is connected through an elliptical hole 64 formed in the powder sieve member 60, a trough 67, and a dust collecting path 65.

Next, the process of milling buckwheat granules using the mill having the above-mentioned structure will be described. First, the buckwheat grains that have been put into the raw material hopper 21 are supplied by a predetermined amount into the raw material supply pipe 34 while the grain amount is adjusted by the supply amount adjusting shutter 27, and the lower opening 41 of the vertical pipe 37 is closed by the opening / closing valve 42. It accumulates in the scrapped raw material supply pipe 34. When the bush 45 provided at the upper end of the vertical pipe 37 reaches the position of the opening / closing dog 47 as the upper mill 22a rotates, it rides on the pressing surface 48 and pushes down the rod 40, and the opening / closing valve 42 descends to move vertically. The lower opening 41 of the pipe 37 opens and the buckwheat grains 33 accumulated in the raw material supply pipe 34 fall. The buckwheat grains 33 that have fallen through the vertical holes 38 of the upper mill 22a are
It falls on the contact surface 51 with b and is crushed between the rotating upper mill 22a.

The crushed buckwheat flour is gradually sent out on the circumference and drops from the circumferential line 52 of the contact surface 51 onto the powder receiving member 53. The buckwheat flour falls over the entire circumference of the powder receiving member 53 and is scraped by the brush tool 70 which moves together with the rotation of the upper mill 22a. The scraped buckwheat flour falls from the opening 54 of the powder receiving member 53 onto the powder sieving member 60, but in that case, the dropping position of the buckwheat flour shifts along the notch 57 of the opening 54 in the front-back direction. In addition to this, the falling position of the buckwheat flour shifts to the left and right due to the outward inclination of the powder receiving guide plate 55 disposed below it, so that the buckwheat flour solidifies in one place and falls in a dumpling shape. Without falling, it falls in the state of being dispersed in the front, back, left and right.

The buckwheat flour that has fallen from the opening 54 onto the powder sieving member 60 is moved by the brush 71 immediately after it falls,
It is rubbed on the net 62 and sieved from the mesh. Most of the buckwheat flour is sifted from the mesh 62 while the brush 71 moves around the powder sieving member 60 about one round. Contaminants such as cuticles and dust that do not pass through the net 62 are carried by the brush 71 to the elliptical hole 64, and then guided to the dust collection path 65 and collected in the contaminant collection box 88 as they are. Unlike the conventional method in which the buckwheat flour is shaken off by horizontal vibration, the buckwheat flour is forcibly rubbed against the mesh 62 and is sieved off.
The buckwheat flour will not bead up or harden on the top.

The buckwheat flour that has been sieved from the powder sieving member 60 onto the powder collecting member 68 moves on the brush tool 72.
Scraped by. In this case, since the brush 72 is attached to the front of the brush 71 of the powder sieving member 60 with respect to the rotating direction of the upper die 22a, the brush 72 was slid onto the powder collecting member 68 by the previous rotation. The buckwheat flour will be scraped, and the buckwheat flour will be dropped into the elliptical hole 69 before the next scraping.

The buckwheat flour collected in the collection box 87 from the elliptical hole 69 of the powder collection member 68 through the powder collection path 89 can be collected by periodically pulling out the collection box 87 from the housing 20, but It is possible to collect smooth buckwheat flour with finer particles compared to the case of using the milling device of No. 1, and the yield of buckwheat flour is 95 to 98% compared to the conventional 80 to 85%.
Can be up to the rank.

In the above embodiment, the case where buckwheat grains are used as grain grains has been described, but it goes without saying that it can be applied to grains other than buckwheat.

[0029]

As described above, according to the grain-graining apparatus of the present invention, the feed amount adjusting shutter for feeding the grain grains by a predetermined amount is provided at the feed port of the raw material hopper, while the raw material feed pipe is provided. Since an opening / closing valve is provided in the machine and the opening / closing operation of the opening / closing valve is interlocked with the rotation of the stone mortar, it is possible to always maintain a constant supply amount of the grain grains fed from the raw material hopper to the stone mortar even though it is a simple means. At the same time, the supply amount can be easily adjusted.

[Brief description of drawings]

FIG. 1 is a schematic front view showing the overall configuration of a flour milling apparatus according to the present invention.

FIG. 2 is a schematic side view showing the overall configuration of the flour milling apparatus according to the present invention.

FIG. 3 is an enlarged view of a main part of a supply amount adjusting shutter.

4 is a cross-sectional view taken along the line AA in FIG.

FIG. 5 is an enlarged cross-sectional view showing the structure of a raw material supply pipe.

FIG. 6 is an explanatory diagram when an open / close valve of a raw material supply pipe is opened.

FIG. 7 shows the planar structure of the powder receiving member and the powder sieving member shown in FIG.
It is sectional drawing which followed the CC line in FIG.

FIG. 8 is a cross-sectional view taken along the line DD in FIG. 1 showing the planar structure of the powder recovery member.

[Fig. 9] Fig. 9 is a view showing the attachment position of the brush tool in Fig. 1 E-
It is sectional drawing which followed the E line.

10 is a cross-sectional view taken along the line O-F in FIG. 9 showing the brushes arranged on the powder receiving member and the powder collecting member.

FIG. 11 is a view showing the brush tool arranged on the powder sieving member shown in FIG.
3 is a cross-sectional view taken along line OG in FIG.

FIG. 12 is an overall view showing an example of a conventional milling apparatus.

[Explanation of symbols]

21 Raw material hopper 22 stone mill 22a Upper mill 22b Lower mill 26 Outlet 27 Supply amount adjustment shutter 32 groove 34 Raw material supply pipe 41 Lower opening 42 on-off valve 44 spring 51 contact surface 53 Powder receiving member 54 opening 55 Powder receiving guide 60 powder sieve member 62 net 70 Brush tool (dust collector) 71 Brush tool (scraping tool)

Claims (3)

[Claims] 1. A grain-grinding apparatus comprising: a raw material hopper; and a raw material supply pipe for supplying the raw material hopper with the raw material hopper from a raw material hopper's outlet to a stone mill. Grain grains characterized in that while a supply amount adjusting shutter for sending out a predetermined amount of grain particles is provided at the outlet, an opening / closing valve is provided in the raw material supply pipe and the opening / closing operation of the opening / closing valve is interlocked with the rotation of the stone mill. Milling equipment. 2. The grain grain milling apparatus according to claim 7, wherein the supply amount adjusting shutter is a rotating body having a concave groove formed on the outer peripheral surface, into which the grain grain is inserted. 3. The opening / closing valve is always closed by a spring bias to close the outlet of the raw material supply pipe, and is opened when a force opposite to the spring bias direction is applied in association with the rotation of the stone mortar. The grain-grinding apparatus according to claim 7.