JPH0640969B2 - Vibration mill with cleaning device - Google Patents

Description

TECHNICAL FIELD The present invention relates to the structure of a wet vibration mill that prevents product contamination.

(Prior Art) Generally, in a vibration mill, a metal ball and an object to be crushed are loaded into a horizontal cylindrical pot, and the whole pot is vibrated to collide the ball and the object to be crushed. Depending on the application, continuous type, batch type, dry type, wet type, etc. are used. In particular, when the specifications of particle size and composition are strict and it is necessary to prevent oxidation, such as metal powder for powder metallurgy, it is ground by a batch method in a non-oxidizing liquid such as alcohol.

In this case, after crushing is completed, the product and liquid are discharged at the same time, and then only the cleaning liquid is injected into the pot and the mill is vibrated for a predetermined time to clean the raw material powder adhering to the balls. Is discharged. This operation was repeated several times to completely wash the raw materials adhering to the pots and balls and then to charge the next raw material and start crushing.

(Problems to be solved by the invention) However, in the vibration mill having the above-mentioned configuration, the specifications of the product are strict, and when such a cleaning operation is insufficient, after crushing, the whole amount of balls is taken out of the pot, It is necessary to carefully clean the above, and in any case not only the number of man-hours is required, but also the operation rate of the equipment is low, and the processing of the cleaning liquid is expensive.

Therefore, the present invention provides a vibrating mill that solves the problems of the above technology.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a nozzle above the upper surface of the pot of the wet vibration mill, and sprays the cleaning liquid over the entire upper surface of the charge of the vibration mill. It was done like this.

(Operation) In this way, after the pulverization is completed, the raw materials adhering to the pots and balls after the product and the liquid are taken out at the same time can be easily washed. Therefore, the above problems can be eliminated.

(Embodiment) FIG. 1 is a partially cutaway perspective view showing the whole vibration mill of the present invention, and FIG. 2 is a vertical sectional view of the vibration mill main body. As shown in the figure, in the vibrating mill 1, a supporting member 5 fixed to both side surfaces of a cylindrical portion of a horizontal cylindrical pot 2 is suspended on a pedestal 4 via a spring 3. Further, a crank 6 is fixed to the opposite side of the support member 5 and a shaft 7 of the crank 6 is rotated by a motor 9 via a speed reducer 8 so that the pot 2 can be swung.

Further, a manhole 10 is provided on the upper surface of the pot 2 so as to open over substantially the entire surface thereof, and one header pipe 11 is provided on each side of the manhole 10 on both sides in the longitudinal direction. The plurality of nozzles 12 face downward, and their lower ends are attached so as not to project downward from the upper surface of the pot 2. The cleaning liquid sprayed from the nozzle 12 is evenly dispersed on the entire upper surface of the charging material in the pot and on the inner surface of the pot. And the upper surface of the manhole 10 is the lid 10.
a is provided so that it can be opened and closed, and the bolt bolt nut 10b
It can be fastened with. A ball discharge port 13 is opened at the lower end of one end face of the pot 2 in the longitudinal direction, and a damper 14 that opens and closes the discharge port 13 by reciprocating horizontally in the outward direction.
The hood 15 to which is attached is arranged. A product discharge port 17 provided with a grid 16 is opened at the lower end of the other end face, and a hood 19 having an opening / closing damper 18 attached thereto is arranged outside the product discharge port 17.

When the vibration mill 1 is used in such a configuration, first, the cylinders 14a and 18a for operating the dampers 14 and 18 are firstly used.
To close the outlets 13 and 17, then the manhole 10
The lid 10a is opened and a predetermined amount of raw material, balls and crushed liquid are charged, and then the lid 10a is closed and fixed with a bolt nut 10b. When the motor 9 is started and the pot 2 is vibrated through the speed reducer 8, the shaft 7, the crank 6, and the support member 5, the balls collide with the raw material and are gradually pulverized. After crushing for a predetermined time, the cylinder 18a is operated and the damper 18 is opened in the vibrating state, and the crushed product is discharged from the discharge port 17 through the hood 19 to the tank 20 together with the crushed liquid. After the discharge is completed, a valve (not shown) is opened to feed the high-pressure cleaning liquid into the header pipe 11, and the nozzle 12 jets the cleaning liquid continuously from the discharge port 17 to the tank 20 while cleaning the surface of the ball and the inner surface of the pot. It After continuing the washing for a desired time, the valve is closed and the motor 9 is stopped to stop the washing. Then, the damper 18 is closed, the next raw material and the crushed liquid are charged, and the same operation is repeated. In addition,
The washing liquid may use the same liquid as the crushing liquid if necessary,
Another liquid may be used. Also, if necessary, a damper
The ball may be discharged using 14 and then the inside of the pot may be washed.

(Effect of the Invention) As described in detail above, according to the present invention, the nozzles for injecting the cleaning liquid are provided on the upper surface of the pot and the upper surface of the charging material of the wet vibration mill, so that the continuous cleaning is immediately performed after the end of pulverization. As a result, it is possible to clean the charge adhering to the surface of the ball and the inner surface of the pot in a short time, and to eliminate the residue in the pot. Therefore, not only can the product be prevented from being contaminated and its quality can be improved, but also the cleaning time can be shortened, and since it is not necessary to discharge the balls once for cleaning, the man-hours can be saved and the operating rate can be improved. A very remarkable effect can be obtained in improving productivity.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing the entire vibration mill of the present invention,
FIG. 2 is a vertical cross-sectional view of the vibration mill body. 1 ... Vibration mill, 2 ... Pot, 4 ... Stand, 5 ... Support member, 6 ... Crank, 7 ... Shaft, 8 ... Reducer, 9
...... Motor, 10 …… Manhole, 10a …… Lid, 10b ……
Tilt bolt nut, 11 …… Hedder pipe, 12 …… Nozzle, 13 …… Discharge port, 14,18 …… Damper, 15,19 …… Hood, 16 …… Grid, 17 …… Product discharge port.

Claims (1)

[Claims] 1. A nozzle for injecting a cleaning liquid over the entire upper surface of a charge of the vibration mill is provided in a manhole having a lid provided on the upper surface of the pot of the wet vibration mill so as not to project downward from the upper surface of the pot. A vibrating mill equipped with a cleaning device.