JP2001224979A - Pulverizing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To pulverize grains, etc., in addition to tea to the grain size meeting the user's liking. SOLUTION: This pulverizing machine has a first pulverizing section 21 which shears the materials to be pulverized by means of a die 15 and a screw 17, a second pulverizing section 22 which supplies the materials sheared in this first pulverizing section 21 further to pulverizing surfaces 3a and 4a of an upper mortar 3 and a lower mortar 4 and pulverizes these materials and a first hopper section 10 which is disposed in an upper case 5 constituting a main body case 2 and supplies the materials to be pulverized to the first pulverizing section 21. An auxiliary supply port 31 for supplying the materials to be pulverized to the second pulverizing section 22 without allow the materials to pass the first pulverizing section 21 is formed in the first hopper section 10. The opening degree of this auxiliary supply port 31 is made regulatable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher for crushing cereals such as sesame, barley, buckwheat, and the like, in addition to tea, into powder having an appropriate particle size (fineness).

[0002]

2. Description of the Related Art Tea is not only a specialty product but also a popular health food. Tea is rich in vitamins and minerals, and if the tea is simply served with hot water, most of the above-mentioned nutrients remain in the tea and the nutrients cannot be taken. Therefore, if the leaf tea is made into fine powder tea, and the tea is served with hot water, sufficient intake of the above-mentioned nutrients becomes possible.

The applicant of the present application has previously proposed a crusher for converting leaf tea into fine powder tea as shown in FIG. 4 (Japanese Patent Laid-Open No. 11-285648). The conventional pulverizer includes a first pulverizing section that shears an object to be pulverized (leaf tea) at a cut portion of a die and a screw to form a powdered substance (powder tea), and a pulverization sheared at the first pulverizing section. A second pulverizing unit is further provided for making the material (powder tea) into fine powder (fine powder tea) on the pulverized surfaces of the upper mill and the lower mill.

[0004] The pulverizer shown in FIG. 4 will be described.

[0005] Reference numeral 1 denotes a crusher, and a main case 2 made of a synthetic resin houses an upper case 5 for storing an upper mill 3 and a lower mill 4 to be described later, a rotary drive device 6 including a motor 6a and the like. And a bottom lid case 8 for closing the lower end opening of the lower case 7.

The upper case 5 has a screw portion 9 detachably attached to the lower case 7, a funnel-shaped first hopper portion 10 for charging the material to be ground (leaf tea a), and a lower portion. A sweeping portion 12 is provided for discharging the fine powder (fine powder tea c) discharged from the joining end surface A of the mill 4 and the upper mill 3 to the cup 11 outside the case. A transparent or translucent synthetic resin upper lid 14 is removably inserted into a central material inlet 13 formed on the upper surface of the upper case 5 (the upper surface side of the first hopper 10). .

Reference numeral 15 denotes a die formed of a ceramic (eg, alumina, ordinary porcelain) or a synthetic resin (eg, acetal resin) having excellent wear resistance. And a cylindrical communication hole 15a communicating with the second hopper portion 16 is formed in the lower part on the inner side. Further, on the peripheral surface of the communication hole 15a of the die 15, an acute angle cut portion 15b for shearing the leaf tea a is formed.
Are formed in the axial direction.

Reference numeral 17 denotes a ceramic (eg, alumina, ordinary porcelain) which is fitted into the die 15 and has excellent wear resistance.
Alternatively, it is a screw formed of a synthetic resin (for example, an acetal resin or the like), and an outer peripheral surface thereof is formed with an acute-angled cut portion 17a for shearing leaf tea a. The screw 17 is screwed to a tip of a rotation drive shaft 18 described later. A spring 20 is provided inside the screw 17 between the screw 17 and the pressing member 19, and the pressing member 19 is pressed by the urging force of the spring 20.
Presses the upper mill 3 described below in the direction of the lower mill 4, and appropriately adjusts the pulverizing pressure between the upper mill 3 and the lower mill 4, so that the pulverizing efficiency is increased.

The screw 17 serves also as a fastening tool for fastening and fixing the upper mill 3 and the lower mill 4 to a rotation drive shaft 18, which will be described later, and is screwed to a screw portion 18a of the rotation drive unit 18, and By attaching the upper case 5 to the lower case 7 by screwing, the cut portion 17a of the screw 17 is formed.
Is inserted into the communication hole 15 a of the die 15, and the screw 17 and the die 15 form a first crushing unit 21. At the same time as the upper mill 3 rotates, the screw 1
7 also rotates integrally and cuts 15b of the die 15
Then, the leaf tea a is sheared into a powdered material (powder tea b) having a uniform size (granularity) by the cut portion 17 a of the screw 17 and supplied to the second hopper portion 16.

Next, the second pulverizing section 22 composed of the upper mill 3 and the lower mill 4 will be described.

Reference numeral 4 denotes a ceramic lower mortar, such as alumina porcelain, ordinary porcelain, or porcelain, housed in the upper case 5. A rotation driving shaft 18 is attached to a mounting member 23 provided at the bottom center of the lower mortar 4.
Are loosely fitted, and the lower mill 4 is fixed to the case side so as not to rotate. The inner surface of the lower mill 4 is formed in a grinding pot-shaped crushing surface 4a, and the crushing surface 4a has a main groove 4b composed of a plurality of parallel grooves and a direction intersecting the main groove 4b as shown in FIG. The sub-groove 4c is formed with the direction changed.

Numeral 24 denotes a synthetic resin pan member provided at the upper edge of the lower mill 4, and upper and lower mills 3, 4
The fine powdered tea c which has been pulverized on the pulverizing surfaces 3a and 4a between the pulverizers and discharged is received and dropped into the cup 11.

Reference numeral 3 denotes an upper mill made of the same ceramic as the lower mill 4, whose lower surface is formed in an inverted conical shape corresponding to the crushing surface 4a of the lower mill 4, and whose upper end is formed by the lower mill 4 Is formed so as to be located at substantially the same height as the upper end of the. Further, the lower surface side is formed on a crushing surface 3a facing the crushing surface 4a on the lower mill 4 side, and a second hopper portion 16 is formed on the inner surface side.

The second hopper 16 has a funnel shape in which the upper side is expanded and narrowed toward the lower side, and a material supply port 25 is formed in the lower side of the funnel so as to penetrate vertically. The material supply port 25 communicates with the crushing surface 3a on the lower surface side.

As shown in FIG. 6, the crushing surface 3a has a main groove 3b and a sub-groove 3c alternately formed over the entire circumference, as in the case of the lower mill 4, and further has a milling surface on the crushing surface 3a side. An arc-shaped material guide groove 3d formed from the lower end of the material supply port 25 to the crushing surface 3a in accordance with the rotation direction of the body.
Are formed. The upper mill 3 and the lower mill 4 have a center angle (opening angle) of about 60 degrees in consideration of the pulverization speed, the pulverization particle size, etc. as a result of various experiments.

Reference numeral 26 denotes an inner lid made of a synthetic resin such as polyethylene or polypropylene, which is detachably attached to the upper mill 3 so as to close the upper end side of the second hopper portion 16 of the upper mill 3. Pulverized material (powder tea b) in part 16
Spilled out of the mortar.

In the above configuration, when the rotary drive unit 6 of the crusher 1 is started to rotate the rotary drive shaft 18 at a low speed (for example, 20 to 100 rpm), the screw 17 connected to the coaxial 18 also rotates, The non-uniform leaf tea a charged into one hopper unit 10 is gradually fed downward by the screw 17 while
The paper is sheared while passing between it and the die 15, finely pulverized, and its particle size is adjusted uniformly. The uniformly adjusted coarse or medium powdered tea b falls into the second hopper 16 on the upper surface of the upper mill 3. The powdered tea b dropped into the second hopper 16 is fed onto the lower mill 4 from the material supply port 25 on the upper mill 3 side.

The powdered tea b thus sent is crushed or crushed by the rotation and rotation of the upper mill 3 by the intersection and sliding of the main grooves 3b and 4b and the auxiliary grooves 3c and 4c of the upper and lower dies 3,4. It moves in the groove or on the groove, and moves toward the outer peripheral side which is the radial direction. In this case, since the crushing surfaces 3a and 4a of the upper and lower mortars are in the shape of a mortar, the powdered tea moves up and down the crushing surface, stays there, and gradually moves toward the outer peripheral side (upward). It is finely crushed.

As described above, the finely ground fine powdered tea is discharged from the crushing surface end A of the upper and lower dies 3, 4 to the tray member 24, and discharged into the cup 11 through the sweeping port 24a.

[0020]

In the above structure, the leaf tea a put into the first hopper section 10 passes only between the screw 17 and the die 15 and is sheared by the section. Since it is supplied to the second hopper section 16,
The amount of leaf tea supplied between the crushing surfaces 3a and 4a of the upper and lower dies 3 and 4 through the material supply port 25 of the upper mill 3 is always substantially constant, and the size of the supplied leaf tea is also determined by the screw 17 and the die. 15 and a substantially constant size sheared. For this reason, fine powder tea that is always set can be obtained.

However, some users prefer not only fine powdered tea having the particle size set as described above but also powdered tea having a coarser particle size. Can not.

Accordingly, an object of the present invention is to provide a pulverizer that allows a user to adjust a particle size to suit his or her preference and to grind the powder.

[0023]

According to a first aspect of the present invention, there is provided a first crushing section for shearing an object to be crushed by a die and a screw; Pulverization having a second pulverizing unit for supplying the pulverized material sheared in the unit to the pulverizing surfaces of the upper mill and the lower mill and pulverizing the same, and a first hopper unit for supplying the pulverized material to the first pulverizing unit In the machine, an auxiliary supply port for supplying an object to be ground to the second crushing section without passing through the first crushing section is formed in the first hopper section, and an opening degree of the auxiliary supply port is adjusted. It is characterized by being made possible.

In the present invention, when the auxiliary supply port is fully closed, the material to be crushed passes only through the first crushing section comprising the die and the screw and is sheared at the section to be supplied to the second crushing section. Is done.

When the auxiliary supply port is opened, the material to be crushed is supplied not only from the first crushing section but also from the auxiliary supply port to the second crushing section. It increases more than when the auxiliary supply port is fully closed.

When the auxiliary supply port is fully closed as described above, the second
When the supply amount of the material to be pulverized to the pulverizing unit is reduced, the particle size of the pulverized material in the second pulverizing unit is reduced, and the auxiliary supply port is opened as described above to supply the pulverized material to the second pulverizing unit. When the amount is increased, the crushed particle size in the second crushing section is large (coarse).
Become.

Therefore, a pulverized product having a desired particle size can be obtained by adjusting the opening of the auxiliary supply port as desired.

According to a second aspect of the present invention, in the first aspect, an adjusting member is rotatably provided inside the first hopper, and an adjusting hole is formed in the adjusting member. The opening degree of the auxiliary supply port is adjusted based on the amount of polymerization between the adjustment hole and the auxiliary supply port by the rotation of the adjustment member.

In the present invention, the opening degree of the auxiliary supply port is adjusted by rotating the adjustment member, and the above-described adjustment of the particle size can be performed.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described based on an embodiment shown in FIGS.

FIG. 1 is a partial sectional view of a pulverizer showing a main part of the present invention. In FIG. 1, reference numeral 5 denotes an upper case similar to the upper case 5 shown in FIG. 4, a funnel-shaped first hopper 10 is formed in the upper case 5, and a die 15 similar to that described above is provided at the lower center of the first hopper 10. A screw 17 similar to the above is inserted through the die 15, and the screw 17 and the die 15 form a first pulverizing unit 21 similar to the above.

Below the first crushing section 21, a second hopper section 16 similar to the above is formed by the upper mill 3 similar to the above. The upper mill 3 is provided with a screw 1 as described above.
7 together with the rotary drive shaft 18. The upper mill 3
Is provided with a material supply port 25 in the same manner as described above.

Below the upper mill 3, a lower mill 4 similar to the above is arranged in a fixed state on the case side.

An auxiliary supply port 31 is formed in the first hopper section 10 of the upper case 5 near the bottom thereof so as to open to the second hopper section 16.

An adjusting member 32 made of resin is provided inside the first hopper section 10. The adjusting member 32 is
The first hopper portion 10 is formed in a funnel shape along the inner funnel shape, and is rotatably loosely fitted to the first hopper portion 10. Further, the upper end of the adjusting member 32 is opened to the material input port 13, and the lower end of the adjusting member 32 is supplied to the first pulverizing section 21 including the die 15 and the screw 17. It is open. Further, the adjusting member 32 has an adjusting hole 33 formed at the position of the auxiliary supply port 31. The adjusting member 32 is rotated in a plane to adjust the adjusting hole 33 and the auxiliary supply port 31.
The amount of material supply from the auxiliary supply port 31 to the second hopper section 16 can be adjusted by adjusting the degree of polymerization by adjusting the degree of polymerization. At the upper end of the adjusting member 32, a hand-holding portion 34 for turning the adjusting member 32 is protrudingly provided, and a finger can be put on the hand-holding portion 34 to easily adjust the turning of the adjusting member 32. .

Since other structures are the same as those shown in FIGS. 4 and 5, the same parts as those in the structure shown in FIG. 4 are denoted by the same reference numerals and the description thereof will be omitted.

Next, a description will be given of the pulverizing action of the above-mentioned structure using leaf tea as an example.

First, the case where the windowless portion of the adjusting member 32 is positioned at the auxiliary supply port 31 and the auxiliary supply port 31 is fully closed will be described.

In this case, the rotation driving device 6 is started, and
When the rotary drive shaft 18 is rotated and the screw 17 and the upper mill 3 are rotated, all the leaf tea a in the first hopper section 10 passes through the first crushing section 21 including the screw 17 and the die 15, It is sheared and supplied into the second hopper section 16. Therefore, the leaf tea supplied from the material supply port 25 between the crushing surfaces 3a and 4a of the upper mill 3 and the lower mill 4 is sheared and has a predetermined amount, which is similar to the crushing of the structure shown in FIG. Fine powder tea is produced.

Next, the adjusting member 32 is rotated to position the auxiliary supply port 31 in the adjustment hole 33, the auxiliary supply port 31 is fully opened, and the screw 17 and the upper mill 3 are rotated as described above. The leaf tea a in the first hopper section 10 passes through the first crushing section 21 composed of the screw 17 and the die 15 and at the same time from the auxiliary supply port 31 which is fully opened, the first crushing section 2
The leaf tea a, which is not sheared at 1, is kept in the second hopper 1
6.

Accordingly, from the material supply port 25 of the upper mill 3, a large amount of leaf tea mixed with coarse leaf tea as compared with the case where the auxiliary supply port 31 is fully closed is used.
a and 4a. Therefore, the crushing surfaces 3a, 4a
The particle size of the powdered tea that is pulverized and discharged from the joint end face A is coarser than when the auxiliary supply port 31 is fully closed.

That is, when the auxiliary supply port 31 is fully closed as described above and the amount of leaf tea supplied to the crushing surfaces 3a and 4a is reduced, the amount of leaf tea (powder tea) between the crushing surfaces 3a and 4a is reduced. The amount of leaf tea (powder tea) is reduced, the upward pushing force acting on the leaf tea (weak tea) is weakened, the residence time of the leaf tea on the crushing surfaces 3a, 4a is increased, and the crushed particle size of the leaf tea is reduced. On the other hand, if the auxiliary supply port 31 is fully opened as described above and the leaf tea supplied to the crushing surfaces 3a and 4a is supplied in a coarser and larger amount than when the leaf tea is fully closed, the upwardly acting leaf tea acts on the leaf tea. The pushing force is increased, the residence time of the leaf tea on the crushing surfaces 3a and 4a is shortened, and the crushed particle size becomes coarser than when the leaf tea is fully closed.

When the opening degree of the auxiliary supply port 31 is adjusted between the above-mentioned fully closed state and the fully opened state by rotatingly adjusting the adjusting member 32, the crushed particle size of the leaf tea is substantially intermediate between the above fully closed state and the fully opened state. Granularity.

Therefore, by adjusting the opening of the auxiliary supply port 31 as desired by adjusting the rotation of the adjusting member 32, powdered tea having a desired particle size can be obtained.

[0045]

As described above, according to the present invention,
A user can easily obtain a crushed material having a particle size that suits his / her taste, and can, for example, crush and drink leaf tea to his / her desired particle size at home.

Further, by providing the adjusting member as in claim 2, the opening degree of the auxiliary supply port can be easily adjusted.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part showing an embodiment of the present invention.

FIG. 2 is a plan view showing a first hopper section and an adjustment member in FIG. 1;

FIG. 3 is a sectional view taken along line BB in FIG. 2;

FIG. 4 is a longitudinal sectional view showing a conventional crusher.

FIG. 5 is a plan view of a lower mill in FIG. 4;

FIG. 6 is a bottom view of the upper mill in FIG. 5;

[Explanation of symbols]

 2 Body case 3 Upper mill 4 Lower mill 3a, 4a Grinding surface 5 Upper case 10 First hopper part 15 Dice 17 Screw 21 First crushing part 22 Second crushing part 31 Auxiliary supply port 32 Adjusting member 33 Adjusting hole

Claims (2)

[Claims] 1. A first crushing section for shearing an object to be crushed by a die and a screw, and the crushed material sheared by the first crushing section is further supplied to the crushing surfaces of an upper mill and a lower mill to be crushed. A second pulverizing section, and a first pulverizing section for supplying the pulverized material to the first pulverizing section.
A crusher having a hopper section, wherein the first hopper section is provided with an auxiliary supply port for supplying an object to be crushed to the second crushing section without passing through the first crushing section; A crusher characterized in that the opening of the mouth can be adjusted. 2. An adjusting member is rotatably provided inside the first hopper portion, and an adjusting hole is formed in the adjusting member, and an adjusting hole is formed between the adjusting hole and the auxiliary supply port by rotating the adjusting member. The pulverizer according to claim 1, wherein the degree of opening of the auxiliary supply port is adjusted according to the amount of polymerization.