JP2005111468A - Pulverizer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving system pulverizer which purposes to make the pulverizer less vibratory, less noisy, dust-free, more compact and reduced in transmission loss by omitting the power transmission system of a high-speed rotation type pulverizer. <P>SOLUTION: A pulverizer which rotates a rotating disc equipped with either impact type hammers or shearing type hammers by one drive motor when pulverizing an object supplied in a pulverization chamber employs the drive motor of a high-frequency spindle motor and makes the motor shaft which mounts at its tip and rotates a rotating disc serve as the drive shaft of the pulverizer. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a pulverizing apparatus for pulverizing an object to be pulverized.

FIG. 2 shows a driving system using a belt and a gear of a conventional grinding apparatus.
In order to further finely pulverize in the pulverizer 13, a rated frequency 50/60 Hz drive motor 14 is used as means for increasing the rotational speed of the rotating plate 4, and the motor side pulley 8 and the pulverizer side in driving the drive belt 10 are used. The speed was increased by the ratio of the pulley diameter of the pulley 9 and further increased by the gear ratio of the drive side gear 11 and the grinding device side gear 12.
Alternatively, as shown in Japanese Patent Application Laid-Open No. 2000-70749, a crushing device that is rotated by attaching a rotary blade as a rotating plate to a drive shaft of a reduction gear connected to a drive motor.
The rotary plate means a rotary plate with an impact hitting unit or a rotary plate with a shearing hitting unit.

In this drive system, there was dust generation by the belt, generation of noise by the belt and gear, or power loss in these power transmission systems.
In addition, since the gear portion is intended for high-speed rotation, an oil bath system is adopted, and therefore there are problems of oil change, leakage, and entry into the grinding chamber 6.
In addition, many of these power transmission parts are required, and the space is required.

FIG. 3 shows a belt driving system of a conventional pulverizer.
In this method, compared with the pulverizing device driven by the belt and gear shown in FIG. 2, the ratio of the pulley diameter of the motor side pulley 8 and the pulverizing device side pulley 9 is increased, and the gear portion is eliminated by rotating the belt at high speed. .
However, problems with the belt drive remain.

FIG. 4 shows a coupling 15 drive system of a conventional pulverizer.
Since this system does not use a belt, there is no problem with the belt drive system. However, because the drive motor uses a rated frequency 50 / 60Hz 2-pole motor, it cannot operate at a high frequency without a speed increasing device. High-speed rotation becomes impossible, and finer pulverization becomes impossible.
In addition, there is power loss due to coupling, and parts such as a shaft for rotating the rotating plate are necessary, so that space is required.

FIG. 5 shows a pulverizing apparatus in which a rotating plate is attached to the tip of a motor shaft of a conventional rated frequency 50/60 Hz drive motor and rotated.
Using a 2-pole motor with a rated frequency of 50/60 Hz as the drive motor, the maximum rotation speed is 5600 r. p. m. Crushing equipment.
Also in this system, since no belt is used, there is no problem in the belt drive system, and there is no coupling, so there is no problem in the coupling drive system.
However, since there is no speed increasing device and it cannot be operated at a high frequency, high speed rotation is impossible and fine pulverization is impossible.
JP 2000-70749 A

In the conventional method, dust is generated by the drive belt 10, and noise, vibration, and power transmission loss are generated by the drive belt 10 and the gears 11 and 12, or the coupling 15 that connects the drive motor shaft and the grinding device shaft.
Furthermore, a space for the power transmission device is required.
In addition, as shown in FIG. 5, although there is a crushing device that rotates by attaching a rotating plate to the tip of the motor shaft of the drive motor, a rated frequency 50/60 Hz 2-pole motor is used for the drive motor, and the maximum operating frequency is 93 Hz. The maximum rotation speed is 5600 r. p. m. Therefore, it is impossible to pulverize more.
With a rated frequency 50/60 Hz 2-pole motor, even if the frequency is increased by an inverter, it is impossible to increase the rotation speed to a high speed rotation like a high frequency spindle motor.

Means to solve the problem

The invention of claim 1 is a pulverizing apparatus in which the driving motor of the pulverizing apparatus 13 is the high frequency spindle motor 1 and the motor shaft 2 that is rotated by attaching a rotating plate to the tip of the motor shaft 2 is rotated.

The invention's effect

As shown in the problem to be solved by the invention, the drive system is not used with a power transmission unit such as the drive belt 10, pulleys 8 and 9, gears 11 and 12, and coupling 15, but at the tip of the motor shaft. Since the rotating plate 4 is attached and rotated, the power transmission parts shown above are unnecessary, the number of parts is reduced, and dust, noise, vibration and power transmission loss generated when they are driven are eliminated.
Moreover, lubricating oil for driving these power transmission components is required.
And the space which these power transmission components occupy is lose | eliminated, and a grinding | pulverization apparatus itself becomes compact.
Similarly, as shown in Japanese Patent Application Laid-Open No. 2000-70749, a crushing apparatus that is rotated by attaching a rotary blade as a rotating plate to a drive shaft of a reduction gear connected to a drive motor.
Alternatively, a crusher using a speed increasing gear.
Even in these, there are problems of noise, vibration, and power transmission loss. Lubricating oil for the gear portion is required, and space is also required.
On the other hand, by attaching the rotating plate 4 to the tip of the motor shaft and rotating it, the above-mentioned dust, noise, vibration generation and power transmission loss are eliminated, and the problem of space occupied by power transmission parts is solved. The high-speed rotation necessary for fine grinding is made possible by using the high-frequency spindle motor 1 as the drive motor of the grinding device 5.

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 6 shows how the pulverizing apparatus 5 pulverizes the object 16 to be pulverized.
The object to be crushed is supplied from the input pipe 18 and enters the crushing chamber.
The motor shaft 2 and the rotary plate 4 with the impact hitting portion or the shear hitting portion 18 rotate at high speed.
The object to be crushed is subjected to impact or shear between the impact-type impacting part rotating at high speed, or between the shear-type impacting part 18 and the fixed-side impact-type impacting part attached to the fixed plate 19 or the shearing-type impacting part 20. Under the action, it is pulverized and becomes a pulverized product 17 which is discharged to the outside.

The pulverizer body 5 and the drive motor 1 are fixedly supported by a support seat 22 that is sandwiched and fixed between the pulverizer body 5 and the flange 3 of the drive motor 1.
Further, depending on the shape, it is fixedly supported by a discharge port flange 21 through which the crushed material 17 is discharged.

The pulverizing apparatus of the present invention can be applied to all pulverized objects in all fields. However, as shown in the effect of the present invention, the pulverized product is not contaminated by the dust generated by the drive belt, and the pulverizing apparatus is not affected by vibration or noise. The fields of chemicals, cosmetics, and foods, which have many demands that must be made as compact as possible, are suitable.

Further, in the fields of chemicals, cosmetics, and foods, the pulverizer is always cleaned when changing the type of pulverization target.
In this case, the shape of FIG. 6 is optimal in that the entire grinding device is fixedly supported by the support seat 22 and the discharge port flange 21 can be freely removed.

A typical pulverizing apparatus used in the present invention does not have a screen in the pulverizing chamber, and there are a large number of pulverizing pins 18 serving as impact-type impacting portions 18 or trimming-type impacting portions 18. They are provided alternately in concentric circles.

In this type of pulverizer, fine pulverization is not performed unless the rotational speed of the rotating plate 2 is kept high. In this type of pulverizer having a drive motor of usually 3.7 to 5.5 kw, 18000 r. p. m. If the pulverization is performed at a high speed, so-called fine pulverization is possible, depending on the object to be pulverized.

In the pulverizer using the high-frequency spindle motor of the present invention as the drive motor, the frequency of the inverter is 18000 r. p. m. It can be rotated at a rotation speed of.
Moreover, since the frequency and the rotation speed are linearly proportional, 18000 r. p. m. Can be operated with stepless shifting.

The maximum rotation speed of the pulverizer of this type having the drive motor of 3.7 to 5.5 kw is usually 18000 r.s. p. m. This is a rotation speed at which the object to be pulverized can be finely pulverized to a certain extent and there is no problem in mechanical strength and durability, and a maximum rotation speed of 18000 r. p. m. It is because of what was done.
Further, the general use rotation speed range is 18000 r. p. m. It also depends on where it seems that there is nothing to cross.

In the pulverization apparatus using the high-frequency spindle motor of 3.7 to 5.5 kw output of the present invention as a drive motor, 18000 r. p. m. The above high-speed rotation is possible, but if actual pulverization is assumed, it is unclear whether there is any merit in consideration of heat generation during pulverization and wear of the pulverizer.

Modified example

7. A crusher for extending the opposite side of the shaft of the high frequency spindle motor as shown in FIG.
Further, as shown in FIG. 8, the fixed plate 19 is eliminated, the rotating plate 4 is installed in two places in one crushing apparatus, and the crushing apparatus is pulverized by rotating in the opposite direction or in the same direction by two high frequency spindle motors 1.

2 is a cross-sectional view of a crushing apparatus in which a rotating plate 4 is attached to a motor shaft tip of a high-frequency spindle motor 1. FIG. The drive motor 14 is a rated frequency 50/60 Hz drive motor, the speed is increased by the ratio of the pulley diameters of the motor side pulley 8 and the crusher side pulley 9 in driving the drive belt 10, and the drive side gear 11 and the crusher side gear are further increased. It is the external view of the grinding | pulverization apparatus which performed the speed increase by 12 gear ratios. FIG. 3 is an outline view of a pulverizer in which the rated frequency 50/60 Hz drive motor is a drive motor and the speed is increased according to the ratio of the pulley diameters of the motor-side pulley 8 and the pulverizer-side pulley 9 when the drive belt 10 is driven. The external view of the grinding | pulverization apparatus which used the rated frequency 50 / 60Hz drive motor 14 as the drive motor, and transmitted power by coupling. A rotary plate is attached to the tip of the motor shaft of the rated frequency 50/60 Hz drive motor, and the maximum rotational speed is 5600 r. p. m. Crusher

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 High frequency spindle motor 2 Motor shaft for high frequency spindle motor 3 High frequency spindle motor mounting flange 4 Rotating plate with impact hitting part or rotating plate with collapsible hitting part 5 Crusher device body 6 Crushing chamber 7 Crusher side high frequency spindle Motor mounting flange 8 Rated frequency 50/60 Hz Drive motor side pulley 9 Crusher side pulley 10 Drive belt 11 Drive side gear 12 Crusher side gear 13 Crusher device main body (conventional technology)
14 Rated frequency 50/60 Hz drive motor 15 Coupling 16 Object to be crushed 17 Pulverized product 18 Rotating-side impact hitting part or aligning hitting part 19 Fixed plate 20 with impact hitting part or aligning hitting part Fixed side Impact type striking part or cut-off type striking part 21 Ground product outlet flange 22 Grinding device and drive motor fixed support part

Claims (1)

In a crushing apparatus in which a rotating plate with an impact hitting unit or a rotating plate with a shearing hitting unit is rotated by a single drive motor when crushing an object to be crushed supplied to the crushing chamber, Is a high-frequency spindle motor, and a motor shaft that rotates by attaching a rotating plate to the tip of the motor shaft is a grinding device drive shaft.

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