JP2009095761A - Vibration mill and operation method of the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration mill capable of shortening work time and lessening the number of workers when crushing treatment of many and various kind raw materials without contamination, and to provide an operation method of the vibration mill. <P>SOLUTION: The vibration mill 30 comprises a crushing chamber 1 for crushing raw material substances by previously charged crushing media to give a crushed product and a vibration apparatus for circularly vibrating the crushing chamber 1 in a vertical plane. The crushing chamber 1 is formed a cylindrical shape, and has a trunk part 2 having a charging inlet 7 for raw material substances in the upper part, a water injection side cover 3 having a water injection port 8 for injecting water or seawater to the inside of the trunk part 2, a discharge side partition plate 4 having a discharge port 9 opened in a size proper for passing the crushed product but no crushing media, and a discharge side cover 5 installed at the position corresponding to the discharge port 9 in the outside of the discharge side partition plate 4 in an openable or closable manner. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vibration mill used for crushing ores, rocks, and other raw materials (for example, earth and sand containing shells containing diamond) with a crushing medium such as metal or ceramic balls, metal rods, and the like. It relates to the driving method.

Conventionally, as a vibration mill used for ore crushing processing, Patent Document 1 describes a vibration mill having a horizontal cylindrical crushing chamber (crushing cylinder in the literature) that vibrates in a vertical plane. . In addition, the crushing chamber of the vibration mill is provided with inlets at the middle and one end of the upper part of the fuselage. Possible outlets are provided
Japanese Examined Patent Publication No. 1-15433 (Claim 1, FIG. 1)

  When mining ore deposits and deposits that are unevenly distributed in a vast area and industrializing them, a large number of test excavations are carried out to collect a large number of samples (raw materials), which are individually crushed and separated. To measure the content distribution of the target and to develop a strategy so that recovery can be carried out with maximum efficiency.

  However, in the conventional vibration mill, when changing the input sample (raw material), in order to prevent the contamination of the previous raw material, the entire contents of the crushing chamber including the crushing medium are discharged and the crushing chamber is discharged. The interior was washed with water and the crushing medium was also washed with water and refilled into the crushing chamber. Depending on the properties of raw materials, throughput, and required crushing particle size, in some cases, even if only a few minutes are required for material input and crushing operation, the contents are discharged from the crushing chamber, the crushing chamber is washed, and crushed. Refilling the contents of the chamber could take over an hour. Therefore, there are problems that a lot of work time is required for crushing a large number of samples, and a large number of workers are required. There was a similar problem when changing the type of sample (raw material).

  Therefore, the present invention was devised to solve such a problem, and the purpose thereof is a vibration that can reduce the work time and work personnel when crushing many or many kinds of raw materials without contamination. It is to provide a mill and a method for operating the mill.

  In order to solve the above-mentioned problem, the vibration mill according to claim 1 circulates the crushing chamber into a crushing product by crushing a raw material with a crushing medium previously charged, and the crushing chamber in a vertical plane. A crushing chamber having a vibration device, wherein the crushing chamber has a cylindrical shape, and has a trunk portion having an inlet for the raw material material at an upper portion thereof, and is disposed on one end side of the trunk portion. A water injection side lid having a water injection port for injecting water or seawater into the inside of the body, and a drain that opens at a size that allows the crushing product to pass therethrough and does not allow the crushing medium to pass through. A discharge-side partition plate having an outlet; and a discharge-side lid attached to the outside of the discharge-side partition plate so as to be openable and closable at a position corresponding to the discharge port.

  According to the above configuration, by providing the water injection port on one end side of the body part and the discharge port on the other end side, a water flow along the axial direction is generated on the lower inner wall surface of the body part, and is not restricted by the crushing medium. The crushing product is discharged from the outlet. Thereby, the cleaning efficiency of the inside of the body and the crushing medium is improved. In addition, by opening the outlet at a size that allows the crushed product to pass and not to pass the crushed medium, only the crushed product is discharged from the outlet, and there is no residue of the crushed product inside the fuselage. There is no need to discharge from the inside of the body part and to refill the inside of the body part.

  In the vibration mill according to a second aspect, the water injection port of the water injection side lid is disposed at a position along the lower circumference of the body part.

  According to the above-described configuration, the water injection port is disposed at a position along the lower circumference of the body portion, so that a water flow along the axial direction of the body portion is easily generated, and the cleaning efficiency of the inside of the body and the crushing medium is improved. Further improvement is achieved, and the discharge of crushed products from the outlet is further promoted.

  The vibration mill according to claim 3 includes a water injection side partition plate that is disposed inside the water injection side lid and has an inspection port that opens in a size that does not allow the crushing medium to pass therethrough, and the water injection side lid includes the water injection side lid. It is attached to the position corresponding to the inspection port outside the partition plate so as to be freely opened and closed.

  According to the above configuration, the water injection side partition plate having the inspection port is provided, and the water injection side lid is attached to the position corresponding to the inspection port outside the water injection side partition plate, so that the inspection port can be opened simply by opening the water injection side lid. Through this, it is possible to easily check the residual amount of the crushed product in the body part.

  In the vibration mill according to a fourth aspect, the discharge-side lid has a protruding portion that fits into the discharge port on the side in contact with the discharge port.

  According to the said structure, since the discharge side cover is provided with the projection part fitted to the discharge port, the inner side surface (side surface on the inner side of the body portion) of the discharge side partition plate becomes a smooth flat surface with almost no unevenness. In the crushing treatment, the exhaust material is worn out and deteriorated due to the raw material material and the crushing medium that are input.

  In the vibration mill according to a fifth aspect of the present invention, the water injection side lid has a protrusion that fits into the inspection port on the side that contacts the inspection port.

  According to the said structure, since the water injection side lid | cover is equipped with the projection part fitted with an inspection port, since the inner side surface (side surface of a fuselage | body part inside side) of a water injection side partition plate becomes a smooth flat surface with substantially no unevenness | corrugation, During the crushing process, wear of the inspection port due to the raw material material and the crushing medium that have been put in and the loss of damage are alleviated.

  A vibration mill operating method according to claim 6 is the vibration mill operating method according to any one of claims 1 to 5, wherein the water injection side lid and the discharge side lid are closed, and the body is opened from the charging port. A raw material and water or seawater in a preparation step, and the body is circularly vibrated at a predetermined frequency, and the raw material is crushed by a crushing medium previously placed in the body. A crushing step for producing a crushed product, and water or seawater is injected into the body part from the water injection port, the discharge side cover is opened, and the body part has a frequency lower than the predetermined frequency or the predetermined frequency. And a washing step of discharging the crushed product and the water or seawater from the outlet.

  According to the above procedure, the body part is vibrated circularly while pouring water into the body part, and includes a cleaning step of discharging the crushed products and water or seawater from the discharge port, thereby axially in the body part. A water flow is generated along the way, and the crushed product is discharged from the discharge port without being restricted by the crushed medium. Thereby, the cleaning efficiency of the inside of the body and the crushing medium is improved.

  The operation method of the vibration mill according to claim 7 is the operation method of the vibration mill according to any one of claims 1 to 5, wherein the charging port is closed and the discharge side cover is opened, and the charging port is opened. While continuously feeding raw material and water or seawater into the fuselage part, the fuselage part is circularly vibrated at a predetermined frequency, and the raw material substance is fed by a crushing medium previously thrown into the fuselage part. Crushing process to produce a crushed product, and discharging the crushed product from the discharge port; and after the crushing process is completed, while continuing the circular vibration of the body part, from the water injection port to the inside of the body part A washing step of pouring water or seawater and discharging the residue of the crushed product and the water or seawater from the outlet.

  According to the above procedure, in the crushing step, the raw material is continuously crushed by circularly vibrating the body part while continuously supplying the raw material and water or seawater, and the operating efficiency of the vibration mill is increased. Will improve.

  According to the vibration mill and the operation method thereof according to the present invention, the crushed product inside the fuselage is discharged in a short time, and the crushed medium is discharged and washed from the fuselage, and the crushed medium is refilled into the fuselage. Since it is not necessary, the cleaning operation of the crushing chamber (body part) for preventing contamination is simplified and the time is shortened. As a result, when crushing a large number or many kinds of raw materials without contamination, the working time can be greatly shortened and the number of workers can be reduced. In addition, the properties of a large amount of raw material can be examined in a short time.

  An embodiment of a vibration mill and its operating method according to the present invention will be described in detail with reference to the drawings. 1 is a cross-sectional view showing the configuration of a crushing chamber used in a vibration mill, FIG. 2 is a side view of the crushing chamber of FIG. 1 viewed from the water injection side (one end side), and FIG. 4A is a perspective view of the crushing chamber of FIG. 1 viewed from the water injection side (one end side), and FIG. 4B is a perspective view of the crushing chamber of FIG. It is the perspective view seen from the other end side.

First, the vibration mill according to the present invention will be described.
As shown in FIGS. 1 to 4A and 4B, the vibration mill 30 according to the present invention includes a crushing chamber 1 and a vibration device (not shown).

  Although not shown, the vibration device includes a support plate P that supports the crushing chamber 1, a rotating shaft that is connected to the crushing chamber 1 on both sides or one side of the support plate P, an unbalanced weight, and the like. Driving the vibration means, the support plate P and the elastic body supporting the vibration means, the frame body supporting the elastic body, and the universal joint for operating the vibration means supported by the frame body via the elastic body A transmission means and a drive motor for operating the vibration means via the drive transmission means are provided. Therefore, when the drive motor of the vibration device is driven, rotation is transmitted from the drive motor to the rotation shaft via the drive transmission means. The rotating shaft rotates in an eccentric state within the allowable range of the elastic body due to the unbalanced weight. Therefore, the crushing chamber 1 connected to the rotating shaft via the support plate P vibrates in a vertical plane.

  The crushing chamber 1 crushes a raw material with a crushing medium that is input in advance to obtain a crushed product. The crushing chamber 1, a water injection side lid 3 disposed on one end side of the carcass part 2, and the carcass part 2 A discharge-side partition plate 4 disposed on the other end side of the battery and a discharge-side lid 5.

  The body portion 2 has a cylindrical shape, and includes an inlet 7 into which a raw material, water, or seawater is introduced. The inlet 7 is configured to be closed by a lid 7a as necessary. The crushing chamber 1 may be provided with a fuselage liner (not shown) made of a cylindrical body made of wear-resistant steel, ceramics, or the like inside the fuselage portion 2. Moreover, the crushing chamber 1 may be provided with an end liner (not shown) made of a disc made of steel material or ceramics having wear resistance inside the discharge side partition plate 4.

The water injection side lid 3 disposed on one end side of the body portion 2 includes a plurality of water injection ports 8 and a water jacket 20 communicating with the water injection port 8 in order to inject water or seawater into the body portion 2. . The water jacket 20 is connected to a water supply source (not shown) by means such as a bendable hose 21.
Further, the discharge-side partition plate 4 disposed at the other end of the body part 2 has a discharge port 9 for discharging the crushed product from the inside of the body part 2 to the outside. A discharge-side lid 5 is provided outside the discharge-side partition plate 4.

  And by providing the water injection port 8 in the one end side of the trunk | drum 2, and the discharge port 9 in the other end, the water flow along an axial direction generate | occur | produces in the lower inner wall face of the trunk | drum 2, and it is not restrained by the crushing medium. The crushed product is discharged from the discharge port 9, and the cleaning efficiency of the inside of the fuselage and the crushed medium is improved. Therefore, the positions of the water injection port 8 and the discharge port 9 are not particularly limited as long as the water injection port 8 is disposed on one end side of the body portion 2 and the discharge port 9 is disposed on the other end side of the body portion 2. However, since the water flow along the axial direction is likely to occur, it is preferable that both the water injection port 8 and the discharge port 9 are arranged along the lower circumference of the body portion 2.

As shown in FIGS. 1, 3, and 4 (b), the discharge-side partition plate 4 is made of a disc, and extends along the circumference of the body part (cylindrical shape) 2 and the body part (other end side) 2. Are joined with bolts 10 provided at predetermined intervals. The discharge-side lid 5 is formed of a semicircular disk having a size approximately half that of the discharge-side partition plate 4 and is attached to a position corresponding to the discharge port 9 on the outside of the discharge-side partition plate 4 so as to be freely opened and closed. . That is, the upper end portion of the discharge side lid 5 is fixed to the substantially central portion of the discharge side partition plate 4 with a hinge 11, and the lower end portion of the discharge side lid 5 is fixed to the lower end portion of the discharge side partition plate 4 with bolts 12. ing.
In addition, although not shown in figure, the trunk | drum 2 and the water injection side lid | cover 3 are joined with the volt | bolt provided at predetermined intervals along the periphery of the trunk | drum (one end side) 2. FIG.

  When discharging the crushed product from the inside of the body part 2, the fixing of the discharge side cover 5 (lower end part) with the bolt 12 is released, and the discharge side cover 5 is inverted to the upper end side of the discharge side partition plate 4. And fixed to the upper end of the discharge-side partition plate 4 with bolts 13. Thereby, the discharge port 9 of the discharge side partition plate 4 is exposed, and the crushed product is discharged from the discharge port 9. At the same time, water or seawater poured into the body part 2 from the water inlet 8 is also discharged from the outlet 9.

  The discharge port 9 opens with a size that allows the crushed product to pass therethrough and does not allow the crushed medium to pass therethrough. By opening the discharge port 9 with such a size, only the crushed product is discharged from the discharge port 9, and the crushed product remains in the body portion. The shape of the discharge port 9 is not limited to the vertically long slit shape described in the drawings, and any shape such as a petal-like (radial) slit shape or a horizontally long slit shape is adopted as long as it meets the purpose. May be. The edge shape of the discharge port 9 may be tapered. Further, the number of outlets 9 is not particularly limited as long as the crushed product is sufficiently discharged.

  It is preferable that the discharge-side lid 5 has a protrusion 14 that fits with the discharge port 9 with a minimum gap on the side in contact with the discharge port 9. The shape and number of the protrusions 14 are preferably the same as the shape and number of the discharge ports 9.

  When the discharge side lid 5 is provided with a projection 14 that fits into the discharge port 9, the inner side surface (side surface on the inner side of the body portion) of the discharge side partition plate 4 is substantially uneven when the discharge side lid 5 is closed. Since there is no smooth flat surface, the wear of the discharge port 9 due to the raw material material and the crushing medium introduced during the crushing process is alleviated. As a result, the opening of the discharge port 9 becomes large, and it is difficult for the crushing medium to come out of the discharge port 9.

  As shown in FIGS. 1 to 4A and 4B, the crushing chamber 1 constituting the vibration mill 30 according to the present invention may include a water injection side partition plate 6 inside the water injection side lid 3. The water injection side partition plate 6 has an inspection port 18. The inspection port 18 is preferably arranged along the lower circumference of the body portion 2. In addition, since the trunk | drum 2 (input port 7), the discharge side partition plate 4 (discharge port 9), and the discharge side cover 5 are the same as the above, description is abbreviate | omitted.

  As shown in FIGS. 1, 2, and 4 (a), the water injection side partition plate 6 is made of a disc, and extends along the circumference of the body part (cylindrical shape) 2 and the body part (one end side) 2. They are joined by bolts 15 provided at predetermined intervals. The water injection side lid 3 is composed of a semicircular plate having a size approximately half that of the water injection side partition plate 6 and is attached to the outside of the water injection side partition plate 6 at a position corresponding to the inspection port 18 so as to be opened and closed. . That is, the upper end portion of the water injection side lid 3 is fixed to the substantially central portion of the water injection side partition plate 6 with a hinge 16, and the lower end portion of the water injection side lid 3 is fixed to the lower end portion of the water injection side partition plate 6 with the bolt 17. ing.

  When the water injection side lid 3 is opened, the water injection side lid 3 (lower end) is released from being fixed by the bolt 17 and the water injection side lid 3 is inverted to the upper end side of the water injection side partition plate 6. Thereby, the inspection port 18 of the water injection side partition plate 6 is exposed, it becomes possible to confirm the inside of the trunk | drum 2, and the residual amount of a crushing product can be confirmed.

  The inspection port 18 opens with a size that prevents the crushing medium from passing therethrough. By opening the inspection port 18 with such a size, it is possible to prevent the crushing medium from coming out of the inspection port 18. The shape of the inspection port 18 is not limited to the vertically long slit shape described in the drawings, and any shape such as a petal-like (radial) slit shape or a horizontally long slit shape is adopted as long as it meets the purpose. May be. The edge shape of the inspection port 18 may be tapered. Further, the number of inspection ports 18 is not particularly limited as long as the residual amount of crushed products can be confirmed.

  It is preferable that the water injection side lid 3 has a protrusion 19 that fits with the inspection port 18 with a minimum gap on the side that contacts the inspection port 18. The shape and number of the protrusions 19 are preferably the same as the shape and number of the inspection port 18. Further, the projection 19 is provided with the water injection port 8 described above.

  When the water injection side lid 3 is provided with the protrusion 19 that fits into the inspection port 18, when the water injection side lid 3 is closed, the inner side surface of the water injection side partition plate 6 (side surface on the inner side of the body portion) is substantially uneven. Since there is no smooth flat surface, the wear of the inspection port 18 due to the raw material material and the crushing medium introduced during the crushing process is reduced. As a result, the opening of the inspection port 18 becomes large, and it is difficult for the crushing medium to come out of the inspection port 18 to the outside.

Next, one operation method of the vibration mill according to the present invention will be described with reference to the drawings. FIG. 5 is a process flow of the method for operating the vibration mill, and FIG. 6 is a schematic diagram schematically showing the method for operating the vibration mill. In addition, about each structure of a vibration mill, it demonstrates suitably referring FIGS. 1-3.
As shown in FIG. 5, the operating method of the vibration mill includes a preparation step (S1), a crushing step (S2), and a cleaning step (S3). Hereinafter, the procedure of each process will be described.

(Preparation process: S1)
(1) The water injection side lid 3 and the discharge side lid 5 provided at both ends of the body part 2 of the crushing chamber 1 are closed, and the raw material and water or seawater are introduced into the body part 2 from the inlet 7. . In addition, the crushing medium is thrown into the inside of the trunk | drum 2 previously (refer Fig.6 (a)).

(Crushing step: S2)
(2) A vibration device (not shown) is driven to cause the body part 2 to vibrate at a predetermined frequency (A). By the circular vibration of the body part 2, the raw material is crushed with a crushed medium to produce a crushed product (see FIG. 6B).
(3) After the circular vibration for a predetermined time, the drive of the vibration device is stopped.

(Washing process: S3)
(4) Open the discharge side lid 5 and pour water or seawater into the body part 2 from the water inlet 8.
(5) While continuing water injection from the water injection port 8, the vibration device is driven to cause the body portion 2 to vibrate circularly at a predetermined frequency or a frequency (B, A ≧ B) lower than the predetermined frequency. Crushed products and water or seawater are discharged from the discharge port 9 by the water injection and the circular vibration of the body portion 2 (see FIG. 6C).
In addition, the amount of water injection is preferably (0.2 to 2.0 times the internal volume of the body part 2) / minute, more preferably (0.5 times the internal volume of the body part 2) / minute.
(6) Stop water injection from the water inlet 8. It is also possible to open the water injection side lid 3 and visually check the residual amount of the crushed product in the body portion 2. (See FIG. 6D).
(7) The following another type of raw material is prepared, and the procedures (1) to (6) are performed. Thereby, various raw materials can be crushed without being mixed with each other.

  By performing said washing | cleaning process S3, the water flow along an axial direction generate | occur | produces on the lower inner wall face of a trunk | drum, and a crushing product is discharged | emitted from a discharge port, without being restrained by a crushing medium. Thereby, the cleaning efficiency of the inside of the body and the crushing medium is improved.

The operating method of the vibration mill according to the present invention may be performed by the following method.
With the water injection side lid 3 of the body portion 2 into which the crushing medium has been previously charged closed and the discharge side lid 5 opened, the raw material and water or seawater are continuously introduced into the body portion 2 from the introduction port 7. Then, the vibration device is driven to cause the body portion 2 to circularly vibrate at a predetermined frequency. As a result, the finely crushed raw material moves to the discharge port side, and the sufficiently fine crushed product is continuously discharged from the opening of the discharge port 9 together with water or seawater.
After the crushing process is completed, a required amount of water is injected from the water injection port 8 while operating the vibration mill 30, and the residue is discharged to clean the inside of the vibration mill. When the washing is completed, the water injection is stopped, and at the same time, another kind of raw material and water or seawater are introduced from the inlet 7, and the next crushing operation is started without any delay. By taking such a method, the operating efficiency of the vibration mill 30 can be increased.

Next, examples of the present invention will be described.
(Example)
The vibration mill 30 described in FIGS. 1 to 3 was used, and the operation was performed as described above. The operating conditions were as follows.
Raw material: 3 kg of earth and sand containing shellfish was used.
In addition, 3 kg of water was added together with the raw material.
Crushing medium: Metal balls with a ball diameter of 25 to 40 mm are used.
Of 75%.
Crushing step: The body part 2 is subjected to circular vibration for 60 seconds at a mill speed (circular frequency of the body part 2) of 50 Hz.
I let you.
Cleaning step: Water is poured into the body part 2 (30 liters / minute), and the body part is milled at a mill speed of 30.
Circular vibration was performed at Hz for 20 seconds.

(Comparative example)
As a comparison object of the example, a conventional vibration mill (vibration mill described in Japanese Patent Publication No. 1-12543) was used, and operation was performed under the same operation conditions as in the example. In addition, a water injection port was provided at the upper part of the grinding cylinder of the vibration mill so that water was injected from above the raw material (crushed medium) in the cleaning process.

  About the vibration mill of an Example and a comparative example, after completion | finish of operation, the inside of a trunk | drum part was visually observed and the residual amount of the crushing product was confirmed. In the vibration mill of the example, the residue of the crushed product was not confirmed. However, in the vibration mill of the comparative example, the residue of the crushed product was confirmed, and the residue of the crushed product was confirmed even when the circular vibration of the washing process was performed for 10 minutes.

The best mode for carrying out the present invention has been described in detail above, but the present invention is not limited to the embodiment (including examples and drawings) and does not depart from the gist of the present invention. Thus, it can be changed as appropriate.
For example, the vibration mill according to the present invention may be one in which a plurality of crushing chambers are supported on a support plate of a vibration device. In addition, the vibration mill has a charging means for manually or automatically loading the raw material, an opening / closing means (such as a cylinder) for manually opening and closing the discharge side lid and the water injection side lid, and a partition from the discharge side lid and the water injection side lid. You may provide the sealing means which implements sealing with a board by pressurization with a cylinder. Further, the vibration mill may be provided with measuring means such as current value, weight, and sound as means for confirming the residual amount of the crushed product. And the operating method of the vibration mill which concerns on this invention may confirm the residue of a crushing product using the said measurement means in a washing | cleaning process.

It is a cross-sectional view which shows the structure of the crushing chamber used for the vibration mill which concerns on this invention. It is the side view which looked at the crushing chamber of FIG. 1 from the water injection side (one end side). It is the side view which looked at the crushing chamber of FIG. 1 from the discharge side (other end side). (A) is the perspective view which looked at the crushing chamber of FIG. 1 from the water injection side (one end side), (b) is the perspective view which looked at the crushing chamber of FIG. 1 from the discharge side (other end side). It is a process flow of the operating method of the vibration mill which concerns on this invention. (A)-(d) is the schematic which shows typically the operating method of the vibration mill which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Crushing chamber 2 Body part 3 Water injection side cover 4 Discharge side partition plate 5 Discharge side cover 6 Water injection side partition plate 7 Input port 8 Water injection port 9 Discharge port 14, 19 Protrusion part 18 Inspection port 30 Vibration mill S1 Preparatory process S2 Crushing process S3 Cleaning process

Claims (7)

A vibration mill comprising a crushing chamber for crushing a raw material with a crushing medium charged in advance to obtain a crushed product, and a vibration device for circularly vibrating the crushing chamber in a vertical plane,
The crushing chamber comprises
A body having a cylindrical shape and having an inlet for the raw material at the top thereof,
A water injection side lid that is disposed on one end side of the body part and has a water injection port for injecting water or seawater into the body part;
A discharge-side partition plate that is disposed on the other end side of the body portion, has a discharge port that opens in a size that allows the crushing product to pass therethrough and does not allow the crushing medium to pass through;
A vibration mill comprising: a discharge-side lid that can be freely opened and closed at a position corresponding to the discharge port outside the discharge-side partition plate.   The vibration mill according to claim 1, wherein the water injection port of the water injection side lid is disposed at a position along a lower circumference of the body portion. A water injection side partition plate having an inspection port that is arranged inside the water injection side lid and opens in a size that does not allow the crushing medium to pass through,
3. The vibration mill according to claim 1, wherein the water injection side lid is attached to a position corresponding to the inspection port outside the water injection side partition plate so as to be freely opened and closed.   4. The vibration mill according to claim 1, wherein the discharge-side lid has a protrusion that fits into the discharge port on a side in contact with the discharge port. 5.   5. The vibration mill according to claim 3, wherein the water injection side lid has a protrusion that fits into the inspection port on a side in contact with the inspection port. A method for operating the vibration mill according to claim 1, wherein
A preparation step of closing the water injection side lid and the discharge side lid and introducing the raw material and water or seawater into the body part from the input port;
A crushing step of circularly vibrating the body part at a predetermined frequency and producing a crushed product obtained by crushing the raw material with a crushing medium previously introduced into the body part;
Water or seawater is poured into the body portion from the water filling port, the discharge side cover is opened, the body portion is circularly vibrated at the predetermined frequency or a frequency lower than the predetermined frequency, and from the discharge port. A method for operating the vibration mill, comprising the crushing product and a washing step of discharging the water or seawater. A method for operating the vibration mill according to claim 1, wherein
With the water injection side lid closed and the discharge side lid open, the body portion is circled at a predetermined frequency while continuously supplying raw material and water or seawater into the body portion from the input port. A crushing step of vibrating, producing a crushed product by crushing the raw material by a crushing medium previously introduced into the body part, and discharging the crushed product from the discharge port;
After the crushing process is completed, water or seawater is poured into the body part from the water inlet while continuing the circular vibration of the body part, and the residue of the crushed product and the water or seawater from the outlet And a washing step for discharging the vibration mill.

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