JPH1043615A - Crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To better the rotation of an upper mortar without generating dragging in a lower mortar even if there is a dimensional error in the upper and lower mortars from an aspect of molding. SOLUTION: A hole members 35 excellent in slip properties is fixed to the attaching hole 12h provided to the central part of an upper mortar 12 and a recessed fitting part 35b of formed to a part of a shaft hole part 35a and a hooking member 17 excellent in slip properties having the hooking parts 17c fitted in the shaft hole part 35a and the fitting part 35b with tolerance is fixed. A press member 18g is provided to the lower part of a main body part 18e is a liftable manner and an attaching nut 18 equipped with the elastic member 18e pressing the press member 18g into the main body part 18e downwardly is threaded with the upper end part of the drive shaft 26 to elasticity press upper and lower mortars.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a crusher for crushing cereals such as sesame, barley, buckwheat and the like, in addition to tea, to 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 will remain in the tea and the nutrients cannot be taken. Therefore, if the tea is made into powdered tea and is served with hot water, sufficient intake of the above-mentioned nutrients becomes possible.

As a pulverizer of this type for converting leaf tea into powdered tea, a pulverizer having a structure shown in FIG. 14 has already been proposed. That is, the lower mill 101 made of ceramics having a mortar-shaped crushing surface on the inner surface 101a side, and the crushing surface formed on the outer surface 102a side coincides with the crushing surface of the lower mill 101, and a funnel shape is formed on the inner surface 102b side. A ceramic upper die 102 having a hopper portion 103 formed thereon, a driving device 104 for rotating and driving the upper die 102, an upper die 102 and a lower die 10
A compact (table-top) crusher 100 comprising an adjusting member 105 for adjusting the pressure of the crushing surface during the period 1 is proposed.

[0004]

However, it is said that the above-mentioned prior-art crusher requires extra work and time because the crushing pressure must be loosened or tightened or adjusted in several places. There was a problem.

Further, since the upper and lower mortars made of ceramics have a mortar shape, if dimensional errors occur due to expansion and contraction during firing, the crushed surfaces do not match, and the gap between the crushed surfaces is large. In addition to being too crushed enough to grind, the crushing surfaces of the upper and lower mortars excessively hit each other, causing a significant increase in frictional load. In the worst case, the upper mill and the lower mill cross over a bite. There was a problem that the upper mill would not be able to rotate.

In addition, when supplying material from the material discharge port of the upper mill 102 to the pulverizing portion between the upper and lower mills, there is a problem that the supply amount cannot be adjusted well and a desired powder particle size cannot be obtained. .

[0007]

Means for Solving the Problems The present invention is to further solve the above-mentioned problems, and a first invention is to form an upper mill (12) on a fixed lower mill (9) side in a mortar shape. Rotatably fit on the crushing surfaces (9a) and (12e) of the upper mill (12)
A material discharge port (13) for supplying a material to be crushed is formed on the crushing surfaces (9a) and (12e), and a drive shaft (26) is passed through the center of the dies (9) and (12). , Upper mill (12)
A hole member (35) having excellent slipperiness is fixed to the mounting hole (12h) at the center of the hole, and a circular shaft hole (35a) is formed in the member (35). A concave fitting portion (35b) is formed in a part and the shaft hole (35b) is formed.
a) with a margin and with the fitting portion (35)
b) a hooking member (17) having excellent slipperiness and having a hooking portion (17c) fitted with a margin with a margin;
A holding member (18g) is provided at the lower part of the main body (18e).
And a mounting nut (18) having an elastic member (18e) for pressing the holding member (18g) downward in the main body (18e), at the upper end of the drive shaft (26). The present invention proposes a pulverizer characterized in that the upper mill (12) is screwed and elastically pressed against the lower mill (9).

According to a second aspect of the present invention, the upper mill (12) according to claim 1 is provided with a supply amount adjusting plate (33) for adjusting the opening of the material discharge port (13). On the back surface (33d) of the contact portion (33c) of (33), a rotation stopper receiving portion fitted to a rotation stopper (35e) formed on the upper surface (35d) of the locking portion (35c) of the hole member (35). A pulverizer characterized by forming (33e) is proposed.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the figure, reference numeral 1 denotes a crusher, which is a table type as an example.

Reference numeral 2 denotes a main body case, which is composed of an upper lid case 3, an upper case 4, a lower case 5, and a bottom lid case 6. The upper lid case 3 has a charging port 3a for charging a material a in the center. The input port 3a has a distal end portion 3b fitted in a hole 21b of an inner lid 21 described later. The lid 3 is fitted into the inlet 3a and closed when the material a is not charged or during operation by the pulverizer (during rotation of the upper mill). Further, the upper lid case 3 is provided so as to be openably and closably fitted so as to cover the upper case 4 from above.

The upper case 4 accommodates upper and lower dies, which will be described later, and has a side face 4a on which a discharge port 4b for discharging the fine powder b and a transparent synthetic resin for temporarily storing the pulverized material b. There is provided a storage section 4c for storing the cup 8 made of. The case 4 is detachably fixed to the upper surface 5a of the lower case 5 by a screw method.

The lower case 5 is provided with a driving device 23 to be described later.
A handle (not shown) is attached to a side of the lower case 5, and the lower surface 5 b of the lower case 5 is closed by a bottom cover case 6. The lower case 5 and the bottom lid case 6 are provided with a slit-shaped or hole-shaped radiating port 6a for releasing heat generated by the motor 24 of the driving device 23. 50 is a motor cooling fan,
The heat generated by the motor 24, which is rotated by the motor 24, is positively discharged to the outside through the heat radiating port 6a.

Numeral 9 denotes a lower mill made of ceramics such as alumina porcelain, ordinary porcelain, and porcelain having a mortar-shaped crushing surface 9a. As shown in FIG.
and a main groove 9d composed of a plurality of parallel grooves and a sub-groove 9e whose direction is changed with respect to the main groove 9d are alternately formed on the inner surface 9c side over the entire circumference on the inner surface 9c side and pulverized. Surface 9a.

Reference numeral 11 denotes a lower mill fixing member 11 formed of a synthetic resin. The lower mill fixing member 11 is bonded to the lower mill 9 formed according to the outer surface shape (sharp bowl shape) of the lower mill 9. Is provided on the inside of the bottom surface (on the side of the bonding surface),
A convex fitting portion 11b for fitting to the shaft hole 9b of the lower mill 9 to position the lower mill 9, and a drive shaft 2 is provided at the center thereof.
The lower case 9 and the lower mill fixing member 11 are prevented from being fitted by fitting into a shaft hole portion 11d provided with a shaft hole 11c penetrating the lower case 5 and a convex portion 5b provided on the upper surface 5a side of the lower case 5. It is formed of a detent part 11e and a depressed part 11f which is in contact with the inner surface 4d side of the storage part 4c of the upper case 4 and is a detent.

The lower mortar fixing member 11 is provided with an adhesive 1
0 is fixed to the lower mill 9 so that the lower mill 9 does not rotate with the upper mill 12. Reference numeral 12 denotes an upper mill whose outer surface 12b conforms to the crushing surface 9a of the lower mill 9 and whose upper end 12a is formed slightly longer than the upper end 9g of the lower mill 9 and protrudes upward. Like the mortar 9, it is made of ceramics. The upper mill 12, as shown in FIG.
The main groove 12c and the sub-groove 1 similar to the lower mill 9 are formed on the outer surface 12b side.
2d is a crushing surface 12e formed alternately over the entire circumference, and an arc-shaped material formed from the lower end 13a of the material discharge port 13 to the crushing surface 12e in accordance with the rotation direction of the mortar (in this case, the upper mill). Guide groove 14 is provided.

Further, the inner surface 12f of the upper mill 12 has a funnel shape which expands outward and narrows inward from the upper material input port 12g side to the lower material discharge port 13 side. The material discharge port 13 communicates with the crushing surface 12e of the outer surface 12b and is connected to the material guide groove 14.

At the center on the bottom side of the upper mill 12, a mounting hole 12h formed of a through hole is formed.
h, a hole member 35 made of a synthetic resin such as polyacetal resin having excellent slipperiness is integrally fixed by an adhesive 36, and a shaft hole 35 of a through hole formed in the member 35 is provided.
A drive shaft 26 of a drive device 23 to be described later is fitted with a tolerance (gap) 16 into a.

As shown in FIG. 13, the hole member 35 has a circular shaft hole portion 35a made of a through hole, a square fitting portion 35b formed in a concave shape on both sides thereof, and a mounting hole 1a.
It consists of a flange-shaped locking portion 35c that is locked to the upper end outer surface 12j of the hole when it is inserted into 2h. Further, on the upper surface 35d of the locking portion 35c, a rotation stopping portion 3 comprising a linear projection in the radial direction is provided.
5e, and the back surface 33 of the contact portion 33c of the supply amount adjusting plate 33 shown in FIG.
The rotation stopper receiving portion 33e formed of a radial linear concave portion formed in d is fitted and positioned so that the adjusting plate 33 is provided carelessly when the mounting nut 18 is tightened. It does not rotate. 1
Reference numeral 7 denotes a hook member made of a synthetic resin having excellent slipperiness, such as glass-containing polyacetal resin. The hook member 17 has an oval cross section in the drive shaft 26 as shown in FIG. It has an oval-shaped shaft hole 17a formed of a through hole corresponding to the intermediate portion 26a, and an auxiliary shaft hole 17d of a round hole continuously formed thereunder, and the member 17 is firmly fixed to the drive shaft 26. The rotational driving force of the drive shaft 26 is transmitted reliably. As shown in FIGS. 5 and 6, the hooking member 17 has a square portion 17b fitted with a margin (gap) into the shaft hole 35a of the hole member 35 and the fitting portion 35b. Part 17
c is formed. FIG. 6 shows a fitting state of the hook member 17 and the hole member 35.

By being fitted as described above,
When the hooking member 17 rotates in one direction together with the rotation of the drive shaft 26, the hooking portion 17c hits the inner surface of the fitting portion 35b and rotates the upper mill 12 in the same direction. Upper mill 12
And the hooking member 17 are fitted with allowances in the radial direction, the circumferential direction and the vertical direction, so that when the upper mill 12 is pressed by the mounting nut 18 described later, Even if there is an error in the dimensions of the upper mill 12 or the lower mill 9 and the upper and lower mills are not properly engaged, the upper mill 12 moves so that the crushing surface of the upper mill 12 matches the crushing surface of the lower mill. And the material a is pulverized efficiently.

Reference numeral 18 denotes a mounting nut, as shown in FIG. 7, a main body 18e made of a synthetic resin such as an ABS resin.
And a holding member 18h inserted into and fixed to the main body 18e, a pressing member 18g, and a pressing spring 18c which is an elastic member compressed and interposed between the main body 18e and the pressing metal 18g.

The upper surface 18a of the head of the main body 18e is rounded, and a knurl 18b is provided on the side of the head to prevent the finger from slipping when the nut 18 is loosened, and a housing 18d for housing a spring 18c is provided inside. Has formed. Further, a guide recess 18i is formed in the lower inner peripheral surface of the main body 18e as shown in FIGS.

A male screw 18j is formed at the lower center of the insert fitting 18h with an open lower end. As shown in FIG. 9, the holding member 18g has an outer peripheral surface formed in a circular shape having a diameter slidable up and down on the lower inner peripheral surface of the main body portion 18e and formed on the outer peripheral surface thereof on the inner peripheral surface of the main body portion 18e. A guide projection 18k is formed integrally with the guide recess 18i so as to be vertically slidable. A shaft hole 18 through which the insert fitting 18h is slidably inserted is provided at the center.
m is formed, and a discharge hole 18n for discharging water entering the main body 18e is formed in the central plate portion.

Then, as shown in FIG. 7, a pressing spring 18c is inserted into the main body 18e, the pressing member 18g is fitted from below the main body 18e, and its guide convex portion 18k is fitted into the guide concave portion 18i to accommodate the storage portion 18d. Fits into the retaining ring 18p
Are fitted to the insert fitting 18h to prevent the holding member 18g from coming off, and constitute the mounting nut 18 as a whole.

Then, the fitting portion 35b of the hole member 35 is positioned on the hooking portion 17c of the hooking member 17, and is fitted on the drive shaft 26 projecting upward from the center of the lower mill 9. And a drive shaft 2 projecting upward from the upper mill 12
The male screw 1 of the mounting nut 18 is attached to the male screw part 26b of No. 6.
8j is screwed and the mounting nut 18 is tightened. This tightening is completed until the lower end 18q of the insert fitting 18 contacts the step 26c of the drive shaft 26 as shown in FIG.

As a result, the biasing load of the pressing spring 18c is transmitted to the upper mill 12 via the pressing member 18g, and the upper mill 12 is pressed against the lower mill 9 with a predetermined pressure. The two screws 18j and 26b are in the direction in which the mounting nut 18 is tightened by the rotation of the drive shaft 26 (that is, the reverse screw).
The mounting nut 18 is not loosened even when the upper mill 12 rotates.

In order to change the particle size of the pulverized material by adjusting the pressing force of the upper mill 12 to the lower mill 9, the pressing spring 1
8c, a plurality of mounting nuts 18 having different urging loads are prepared and used as desired.
A plurality of spacers 19 having different thicknesses D as shown in FIG. 1 are prepared, selected as desired, and used as shown in FIG.

The spacer 19 is, as shown in FIG.
A main body portion 19b having a predetermined thickness D having a shaft hole 19a formed in the center, and a convex portion 19c fitted into the shaft through portion 35a;
And a projection 19d that fits into the holding member 18g.

Reference numeral 33 denotes a supply amount adjusting plate made of synthetic resin.
It is for adjusting the input amount (supply amount) of the material (leaf tea t) to the pulverization section formed between the pulverization surfaces.
The mounting hole 33a is fitted to the drive shaft 26 with a large margin so as to be interposed between the lower surface of 8g and the locking portion 35c of the hole member 35 of the upper mill 12. The supply amount adjusting plate 33
After the attachment nut 18 is loosened or removed from the drive shaft 26, the rotation is adjusted (position change) so that the adjustment portion 33b comes to the discharge port 13. The material discharge is performed by this adjustment (position change). The size of the diameter of the outlet 13 changes.

That is, if the degree of protrusion of the adjusting portion 33b to the discharge port 13 is adjusted to be large so that the diameter of the material input port 13 is reduced, the amount of leaf tea sent to the crushing surface is reduced, and the leaf Tea (powder tea) has a weak force to be pushed upward, and the residence time on the crushed surface becomes longer, so that the crushed particle size of leaf tea becomes finer. Also, by reducing the degree of protrusion, the material outlet 1
If the caliber of No. 3 is increased, the amount of leaf tea sent to the crushing surface is large, the force for pushing up the leaf tea is large, the residence time on the crushing surface is short, and the crushing particle size is as described above. It will be coarser than that. A plurality of rotation stopper receiving portions 33e formed of linear concave portions are formed radially on the back surface 33d side of the contact portion 33c of the adjustment plate 33 at an interval of 5 ° to 10 °, and the formed rotation is formed. Stop part 3
3e fits into the rotation stopping portion 35e of the linear projection formed on the upper surface 35d side of the locking portion 35c of the hole member 35, and the supply amount adjusting plate 18 does not rotate when the mounting nut 18 is tightened. It has become.

Reference numeral 20 denotes a lower mill 9 outside the upper end 9g of the lower mill 9.
Is a receiving member which is detachably fitted to the upper end 9g of the receiving plate 20. The receiving member 20 receives the fine powder b discharged from the crushing surfaces 9a and 12e, and the lower surface 20b side of the receiving portion 20a. And a discharge portion 20d for discharging the fine powder b to a transparent cup 8 made of synthetic resin detachably provided in the storage portion 4c of the upper case 4. Is composed of
The receiving tray 20a is provided in contact with the upper end 9g of the lower mill 9 so as to receive the fine powder b without leaking. In addition, the tip portion 20e of the discharge portion 20d in the tray member 20
Is a sweeping opening 4b formed in the upper case 4.
It is formed so as to project slightly downward, and has a function of preventing the pan member 20 from rotating.

Reference numeral 21 denotes an inner lid made of a synthetic resin such as polyethylene, nylon, or polypropylene which is detachably attached to the material inlet 12g of the upper mill 12, and a hopper 15
The inner material a is provided so as not to spill out of the die from the material input port 12g side during rotation driving, and a fitting type utilizing the elasticity of the inner lid 21 itself or a locking member such as a spring is used. It is detachably mounted by a general fastening means such as a detachable type or a screw tightening type with a reverse screw. Further, the remaining state of the material a in the hopper 15 is transmitted through the inner lid 21. It is made of transparent synthetic resin so that it can be visually checked from outside.

Reference numeral 22 denotes one or a plurality of brush members, which are generally fitted to the collar 21a of the inner cover 21 by using the elasticity of the inner cover 21 itself or the elasticity of the brush member 22 itself. When the upper mill 12 rotates, the inner lid 21 fitted to the upper mill 12 also rotates, and the crushing surfaces 9 of the upper and lower mills are rotated.
The receiving portion 20a of the receiving member 20 receives the fine powder b discharged from the a and 12e, and the received fine powder b is collected by the rotating brush member 22, and discharged from the discharging portion 20d of the receiving member 20 to the cup 8. It is supposed to be.

Reference numeral 23 denotes a small motor 24, a transmission gear 25 for shifting the high-speed rotation of the motor to low-speed rotation, a driving shaft 26, the motor 24 and the gear 25, and
And a timer (not shown) for controlling the rotation time of the motor 24. The motor 24 is attached to the mounting fitting 27 by a screw 32. The mounting bracket 27 is further attached to the bottom lid case 6 by three sets of screws 28.
(Only one set of screws is shown in the figure). The gear portion 25 is provided on the upper surface 2 of the mounting bracket 27.
The first gear 25a and the second gear 25b are engaged with each other on the 7a side, and three sets of screws 30 (one set of screws 30 in FIG. (Only screws are shown).

The rotation of the motor 24 is
a, is transmitted to the drive shaft 26 via the first gear 25a and the second gear 25b, and drives the upper mill 12 via the hooking member 17. At this time, the ratio between the first gear 25a and the second gear 25b is adjusted so that the drive shaft 26 rotates at 20 to 300 rpm.

The motor 24 is controlled to stop after driving for a predetermined time by setting a timer (not shown). The motor 24
A geared motor equipped with a transmission gear may be used.

Numeral 31 designates a material a which is entangled in a bridge shape and stays in the hopper portion 15 of the upper mill 12, especially in the vicinity of the material discharge port 13 located at a lower portion of the hopper portion 15, as the upper mill 12 rotates. Stirring member,
The member 31 is an inlet 3a located at the center of the upper lid case 3.
The upper end case 31 is inserted and mounted from below the upper lid case 3 to the holding portion 3c attached to the upper case 12 so that the lower end portion 31a is located above the material discharge port 13 below the upper mill 12. In addition,
The stirring member 31 held by the holding portion 3c can be replaced by pulling it down, and for example, if it is cut off, it can be replaced with a new one.

Next, a description will be given of a use state of the crusher 1, in which the leaf tea t (material a) is converted into powdered tea p (fine powder b). When the crushing machine 1 is stopped, the pressure between the crushing surfaces 9a and 12e of the upper mill 12 and the lower mill 9 is set to a pressing spring 18c having a desired biasing load so that the desired size (fineness) powdered tea p is ground. Is selected and tightened or a spacer 19 having a desired thickness is selected.
Then, the mounting nut 18 is tightened. That is,
To reduce the particle size, use the mounting nut 18 with a large biasing load of the pressing spring 18c, or use a spacer 19 with a large thickness, or adjust the adjusting plate 33 to adjust the diameter of the material discharge port 13. Is set to be small. Conversely, if you want to increase the particle size, press the spring 18
(c) Use a mounting nut 18 with a small urging load, or use a spacer 19 with a small thickness, or adjust so that the diameter of the material discharge port 13 becomes large.

Then, a predetermined amount of leaf tea t is supplied to the hopper 15 formed in the upper mill 12, and the inner lid 21 and the upper lid case 3 are fitted into the upper mill 12 and the upper case 4 and fixed. In addition, when the particle size (fineness) of the powdered tea p is not adjusted or when the leaf tea t is continuously converted into the powdered tea p, the lid 7 provided in the charging port 3a of the upper lid case 3 is removed, and the powdered tea p is charged. The leaf tea t may be supplied to the hopper 15 from the mouth 3a.

When the preparation of the leaf tea t is completed, a power cord (not shown) is plugged into an outlet, a crushing time corresponding to the crushing amount is determined by a timer (not shown), and the power is turned on when the timer is set. , Drive 2
3 starts, the drive shaft 26 rotates at a low speed, and the upper mill 12 rotates. At this time, if one or both of the upper mill 12 and the lower mill 9 has a dimensional error due to distortion or the like at the time of firing and there is a poor fitting between the crushed surfaces of the two mills 12 and 9, the hook member 17 A gap 16 in the vertical and circumferential directions between the upper mill 12 and the upper mill 12, and a pressing spring 18c
Turns freely along the grinding surface of lower mill 9
It is possible to avoid the occurrence of rotation failure and pulverization failure due to the above-mentioned poor fitting.

The leaf tea t put into the hopper 15 is stirred by the stirring member 31 attached to the upper lid case 3 as the upper mill 12 rotates. Is stirred. Therefore, the leaf tea t is smoothly discharged from the material discharge port 13 below the upper mill 12.

The leaf tea t discharged from the mouth 13 is guided to the crushing surfaces 9a and 12e through the material guide grooves 14 by centrifugal force caused by the rotation of the upper mill 12. The leaf tea t is further rotated by rotation of the upper mill 12, and the main grooves 9d, 1
It moves in or on the groove while being crushed or crushed by the crossing and sliding of 2c and the sub-grooves 9e and 12d, and moves toward the radially outer periphery. In this case, since the crushing surfaces 9a and 12e of the upper and lower mortars are in the shape of a mortar, the leaf tea t stays for a long time by moving back and forth on the crushing surface, and gradually moves toward the outer peripheral side to become finer. Is crushed.

As the pulverization further proceeds, the pulverized powdered tea p is discharged from the joint end face A of the upper mill 12 and the lower mill 9, and accumulates on the tray 20a. The accumulated powdered tea p is swept out by the brush 22 fixed to the inner lid 21 rotating together with the upper mill 12 in the direction of the discharge portion 20d of the tray member 20 by the sweeping action of the brush 22, and moved to the discharge portion 20a connected to the tray portion 20a. It is discharged out of the machine from the outlet 20f. The discharged powdered tea p is dropped and stored in a container 8 such as a cup which is located separately at the discharge port 20f. Then, when the crushing time decided earlier, the timer expires, and the power supply also shuts off,
Is completed.

The above description has been made of an example in which the leaf tea is made into powdered tea. However, the material to be crushed is not limited to tea leaves, but is substantially the same for other cereals and the like. It is not limited to a table-top type, and any large-sized one installed on the ground may be used as long as it does not depart from the gist of the present application.

Next, care after use of the crusher 1 will be described. In the crusher 1 of the present invention, the upper lid case 3 and the upper case 4 can be disassembled to facilitate cleaning.

First, the upper case 3 is opened. Next, the mounting nut 18 is loosened and removed.
When using, the spacer 19 is also removed. ) Then, the upper mill 12 is lifted and removed from the drive shaft 26 and the hook member 17, and the hook member 17 is also taken out from the drive shaft 26. Further, the lower case 9 is similarly lifted and removed, and then the upper case 4 is removed. Removed upper and lower mortar, upper case
The mounting nut 18 and the supply amount adjusting plate 33 are washed with a brush and, if necessary, with water to remove the adhered powder residue, wiped dry, and dried. The body case 2 is also cleaned with a brush or the like. The upper mill 12 and the like once removed after cleaning as described above are re-assembled to the main body case 2 in a procedure reverse to the removal, and the cleaning is completed. Cleaning (care) after use does not need to be performed each time, but is performed as necessary after checking the adhesion state and the like.

[0046]

As described above, the crusher according to the present invention is provided with the upper mill so that it can be fitted to the drive shaft with a margin and can be slightly tilted, and the upper mill is elastically moved to the lower mill. Since the pressing is performed, even if there is some dimensional error between the upper and lower dies, the upper mill rotates with the pulverized mutual surfaces maintaining a good pulverization gap, and can pulverize the material to be pulverized well and efficiently.

Further, a plurality of elastic members provided in the mounting nut having different urging loads are prepared, and by selecting and using these, the pressing force of the upper mill against the lower mill is adjusted.
A pulverized product having a desired particle size can be easily produced.

Also, in the unlikely event that galling occurs between the upper mill and the lower mill, the upper mill is made of a hole member and a hook member, both of which are excellent in slipperiness. With a margin (gap) between them, the nut for mounting allows it to move up and down and horizontally.
The upper mill will not get stuck and become unrotatable.

Further, by adjusting the opening of the material outlet of the upper mill with the supply amount adjusting plate, the supply amount of the material to be pulverized to be supplied to the pulverization surface can be easily adjusted. Since the adjusting plate is fitted into the hole member so that the adjusted adjusting plate does not inadvertently rotate after the adjustment, powdered tea having a desired crushed particle size can be obtained without changing the material supply amount.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a crusher showing an embodiment of the present invention.

FIG. 2 is an enlarged view of the main part.

FIG. 3 is a top view of a lower mill.

FIG. 4 is a bottom view of the upper mill.

5A and 5B show a hook member, wherein FIG.
(B) is a longitudinal sectional view.

FIG. 6 is an enlarged sectional view of a hole member, a hook member, and a shaft attachment portion of a drive shaft.

FIG. 7 is a sectional view of a mounting nut.

8 (a) is a side sectional view, and FIG. 8 (b) is a bottom view, showing a main body of the mounting nut.

9A and 9B show a holding member, wherein FIG. 9A is a plan view,
(B) is a side sectional view.

10A and 10B show a spacer, in which FIG.
(B) is a side view, (c) is a side sectional view.

FIG. 11 is an enlarged sectional view of a main part in a state where a spacer is inserted between an upper mill and a mounting nut.

FIG. 12 shows a supply amount adjusting plate, (a) a back view,
(B) is a longitudinal sectional view.

13 (a) is a plan view of an upper half, FIG. 13 (b) is a bottom view of a lower half, and FIG. 13 (c) is a longitudinal sectional view.

FIG. 14 is a side view showing a conventional pulverizer.

[Explanation of symbols]

 Reference Signs List 9 lower mill 9a crushing surface 12 upper mill 12e crushing surface 12h mounting hole 13 material outlet 17 hook member 17c hook portion 18 mounting nut 18c mounting spring 18e body portion 18g pressing member 26 drive shaft 33 supply amount adjusting plate 33c contact Part 33d Back 33e Rotation stop receiving part 35 Hole member 35a Shaft hole 35b Fitting part 35c Locking part 35d Upper surface 35e Rotation stop

Claims (2)

[Claims] 1. An upper mill (12) on a fixed lower mill (9) side.
Are rotatably fitted on the grinding surfaces (9a) (12e) in the shape of a mortar, and the upper mill (12) is a material discharge port (13) for supplying the material to be ground to the grinding surfaces (9a) (12e). The drive shaft (26) penetrates through the center of the dies (9) and (12), and the hole (12h) at the center of the upper mill (12) has excellent slipperiness. 35), and the same member (35)
Forming a circular shaft hole (35a) in the hole and forming a concave fitting portion (35b) in a part of the shaft hole (35a);
A hook member (1) having excellent slipperiness, which has a hook portion (17c) which fits into the shaft hole (35a) with a margin and fits with a margin in the fitting portion (35b).
7) is fixed, and a pressing member (18g) is provided at the lower part of the main body (18e) so as to be able to move up and down, and an elastic member (18e) for pressing the pressing member (18g) downward in the main body (18e). A crusher characterized in that a mounting nut (18) provided with a screw is screwed to the upper end of the drive shaft (26) and the upper mill (12) is elastically pressed against the lower mill (9). 2. An upper mill (12) is provided with a material discharge port (1).
3) A supply amount adjusting plate (33) for adjusting the opening degree is provided, and a locking portion (35c) of the hole member (35) is provided on the back surface (33d) of the contact portion (33c) of the adjusting plate (33). 2. The crusher according to claim 1, wherein a rotation stopper receiving portion (33e) is formed to fit into the rotation stopper portion (35e) formed on the upper surface (35d) of the crusher.