JPH0642744Y2 - Eddy current type pulverizer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION “Industrial field of application” The present invention is directed to a violent vortex between a stirring plate that rotates at high speed around a vertical axis and a liner that is provided close to the orbiting cylindrical surface of the stirring plate. The present invention relates to a vortex type fine pulverizer for producing fine powder such as cereals.

“Prior Art” A conventional vortex type fine pulverizer has a body 1 as shown in FIG.
In the central part of the, a rotary shaft 2 in which a large number of rotating discs 3 are arranged in the vertical direction, and a plurality of stirring plates 4 provided in the circular tip of the rotating disc 3 so as to vertically penetrate The orbiting cylindrical surface of the stirring plate 4 is provided with a liner 5 in which inner surfaces are provided with holes or the like, and an air tight plate 7 having a vent hole 6 in the center is provided above the inside of the body 1. The exhaust chamber 8 is provided on the upper surface of the air blocking plate 7, and the upper fan 9 is provided.

"Problems to be solved by the invention" However, in such a conventional vortex type fine pulverizer,
A place where the fine powder in the air changes the direction of the air flow and collides violently with the wall surface, for example, the inner surface a of the air closing plate 7 in FIG. 2 or the standing wall b of the exhaust chamber 8 that hits the upper fan 9 in the centrifugal direction. However, there are problems that a large amount is deposited in a short period of time, and depending on the material, it solidifies as it is, and then peels off and mixes into the fine powder, or it obstructs the flow of air flow to reduce the efficiency of the machine.

The present invention has been made by paying attention to such problems in the conventional technology.There is no place where fine powder is deposited inside the body, and solidified powder is mixed with the fine powder and discharged, or It is an object of the present invention to provide a vortex type fine pulverizer which does not impede the flow and reduce the efficiency.

"Means for Solving the Problem" The gist of the present invention for achieving such an object is to provide a base having an introduction cavity for introducing a crushed material inside,
A body having at least a cylindrical portion is erected at a lower portion, a rotating shaft rotatably supported by penetrating the center of the body, and a plurality of fixed members arranged vertically on the rotating shaft. Rotating discs, a plurality of stirring plates that are vertically connected to each other by penetrating through the circular tips of the rotating discs, and are attached in a radial direction. The inner circumference of the cylindrical portion is provided with a liner whose surface is crushed, and the like, and a rotary circle arranged at the bottom of the rotary discs arranged vertically. A suction fan for sucking the object to be crushed is provided on the lower surface of the plate, and an upper cavity portion in which the generated fine powder is blown up and floated is provided above the rotating disk provided at the uppermost portion, and the upper part is provided. An exhaust duct for guiding the fine powder from the cavity and an exhaust fan for discharging the fine powder are provided in the exhaust duct. It consists in vortex Shikibi pulverizer made.

"Action" The object to be crushed sent from the base to the inside of the body is strongly ejected outward by the stirring plate rotating at high speed. Then, it is strongly struck against the inner surface of the liner having a circular cylindrical surface of the stirring plate, and the surface of which is provided with holes or the like, and is pulverized while repeating the rubbing action.

Inside the body, an upward airflow is generated by the suction fan provided on the lower surface of the lowermost rotating disk and the fan action generated by the high-speed rotation of the stirring plate, and the generated powder rides on this upward airflow. To rise. The air flow containing the fine powder blown up from the cylindrical portion of the body is once discharged in the upper cavity portion and then discharged by the suction force of the discharge fan provided outside.

Since there is no place where the fine powder collides strongly and is deposited inside the body, a large amount of powder deposition does not occur in a short time. Also, since the exhaust fan for taking out the powder to the outside is provided outside the heavy body, it is easy to open the exhaust fan and the exhaust duct, and even if a little accumulated in the duct, it can be easily removed. It is possible.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention.

The vortex type fine pulverizer 10 has a copper-shaped cylindrical portion 11a, and an upper hollow portion 11b having a larger inner diameter and a larger internal volume than the cylindrical portion 11a at the upper portion thereof, and a rotating shaft 12 inside the body 11. Further, a stirring plate 13 that rotates at a high speed and a liner 14 that is provided in the vicinity of the orbiting cylindrical surface of the stirring plate 13 and that crushes the object to be crushed into fine powder are provided.

The bottom of the body 11 is a bottom plate 15, and a center hole 16 for receiving the object to be crushed is opened in the center.

The base of the body 11 is connected to the base 17 and the base 17
Is a hopper that extends to the side and puts the material to be crushed into the part.
An air intake 20 provided with 18 and an air filter 19 is provided. Then, following this air intake port 20, a conduction path 21 for guiding the object to be ground together with air is provided,
A damper 22 for adjusting the intake air amount is provided in the middle of the conduction path 21.
Is provided. Further, inside the base portion 17, the central hole of the body 11 is communicated with the conduction path 21 to receive the object to be crushed.
An introduction cavity 23 that is fed from 16 into the body is formed.

The rotary shaft 12 penetrates the partition plate 24 of the introduction cavity 23, and the upper part thereof penetrates the ceiling plate 25 of the body 11 and is pivotally supported by bearings 26 and 27. One end is connected to the drive motor 28.

A large number of rotating discs 29 are fixedly installed on the rotating shaft 12 at regular intervals, and the stirring plate 13 is vertically inserted into the rotating discs 29 by penetrating the circular tips of the rotating discs 29. The direction of the plate is the radial direction of the rotating disc 29.

On the lower surface of the lowermost disk 29a of the rotary disk 29, a suction fan 30 for sucking up the material to be crushed from the introduction cavity 23 of the base 17 is provided.

On the other hand, the rotating disc 29 located at the top of the rotating discs 29
As shown in the figure, b is provided at a position corresponding to the upper end of the cylindrical portion 11a of the body 11, and the corresponding liner 14 is also provided along the inner peripheral surface of the cylindrical portion 11a.

Above the uppermost rotary disc 29b is an upper cavity 11b having a large internal volume, and an exhaust duct 31 and an exhaust fan 32 for exhausting the powder to the outside are provided in the upper cavity 11b.

Next, the operation will be described.

The drive motor 28 is started to drive the rotary shaft 12. In this embodiment, when driven at a rotation speed of about 5000 RPM, the outer peripheral speed of the stirring plate 13 becomes a high speed of about 120 meters per second. Since the stirring plate 13 is oriented in the circumferential direction, the air inside the body 11 is strongly directed outward, and the suction fan 30 is installed in the center hole 16 of the bottom plate 15.
Since air is sucked from the air, it merges with these air to generate a violent updraft.

The ascending airflow takes in a large amount of air from the air intake port 20, and the conduction path 21 of the base 17 becomes a high-speed airflow and is an introduction cavity.
Enter within 23. Then, when crushed substances such as soybeans are fed from the hopper 18, these crushed substances are introduced into the introduction cavity 23 together with the airflow, and enter the body 11 through the center hole 16.

The object to be crushed that has entered the body 11 is repelled by the suction fan 30 and collides with the liner 14, is repelled by the stirring plate 13 and is hit back to the liner 14 again, and is lifted and rotated in the circumferential direction and centrifugally. While repeating complex and intense exercises such as centripetal, the surface of the liner 14 is rubbed. Since the surface of the liner 14 is engraved with dies or the like, it is crushed into pieces during repeated vigorous rubbing and striking motions, and finally becomes a fine powder.

When the amount of intake air is too large and the generated powder becomes coarse during the above operation, the damper 22 provided in the conduction path 21 is adjusted to soften the air flow.

The fine powder generated in the cylindrical portion 11a of the body 11 is introduced into the upper cavity portion 11b having a large internal volume at a position apart from the cylindrical portion 11a, where the flow velocity suddenly slows and becomes relatively slow. And it is led to the discharge duct 31. Therefore, the fine powder does not collide strongly with the side wall and the like, and a large amount of deposition is not observed in a short time.

Further, in such a vortex type fine pulverizer 10, since the body 11 and the like are configured to be considerably heavy in order to perform an extremely vigorous pulverization processing action, it is not easy to open the inside, but the discharge fan 32 is Since it is provided outside the body 11, it can be opened easily, and even if some fine powder is deposited inside, it is very easy to open it frequently and remove the deposit.

[Advantage of Invention] According to the vortex type fine pulverizer according to the present invention, a body having a cylindrical portion and an upper cavity portion having a large volume is provided on the upper portion of the cylindrical portion, and the inner periphery of the cylindrical portion is rubbed and crushed. Since the liner for use is made to pass through and a stirring plate that circulates in close proximity to the liner is provided, the powder finely divided in the region of the cylindrical portion has a low flow velocity in the upper cavity portion, and becomes violent. It does not collide with the wall surface and is gently discharged by the discharge fan provided outside the body, and the fine powder generated does not accumulate in the body.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an eddy current type fine pulverizer showing an embodiment of the present invention, and FIG. 2 is a vertical sectional view of a conventional eddy current type fine pulverizer. 10 ... Eddy current type pulverizer, 11 ... Body 11a ... Cylindrical part, 11b ... Upper cavity part 12 ... Rotating shaft, 13 ... Stirring plate 14 ... Liner, 17 ... Base part 18 ... Hopper, 20 ... Air intake 21 ... Conduction path, 22 ... Damper 23 ... Introductory cavity, 25 ... Ceiling plate 26, 27 ... Bearing, 29 ... Rotating disc 29b ... Top rotating disc 30 ... Suction fan, 31 ... Exhaust duct 32 ... Exhaust fan

Claims (1)

[Scope of utility model registration request] 1. A body having at least a lower portion having a cylindrical portion is erected on a base having an introduction cavity for introducing a material to be crushed therein, and a shaft is rotatably passed through a central portion of the body. The rotating shaft to be supported, a plurality of rotating discs fixedly arranged in the vertical direction on the rotating shaft, and fixed to the rotating disc by penetrating through the circular tips of the rotating discs and connecting in the vertical direction. Providing a plurality of attached stirring plates and a liner formed on the inner circumference of the cylindrical portion of the body close to the orbiting cylindrical surfaces of these stirring plates, the surface of which is provided with dies for crushing, etc. On the lower surface of the rotary disc disposed at the bottom of the rotary discs arranged in an array,
A suction fan for sucking the object to be crushed is provided, and an upper cavity portion in which the generated fine powder is blown up and floats is provided above the rotating disc provided at the uppermost portion, and the fine powder from the upper cavity portion is provided. An eddy current type fine pulverizer comprising an exhaust duct for guiding a body and an exhaust fan for exhausting fine powder to the exhaust duct.