JP4993490B2 - Automatic pulverizer for analytical samples - Google Patents

Description

  The present invention relates to an automatic pulverizing apparatus for analytical samples. More specifically, the present invention relates to an automatic and continuous fine pulverization of analytical samples respectively contained in a plurality of containers, and the pulverized analytical sample is contaminated. The present invention relates to an automatic pulverizing apparatus for analytical samples that can be completely recovered without causing them to occur.

  Because of the difference in the content of copper and other metals contained in the copper, copper slag, copper scrap, etc. used in copper smelting, the operational efficiency is affected, so what components are included in each lot in advance. By analyzing whether or not valuable metals are contained in the ratio, the operation efficiency is made uniform by mixing the materials to be used. For example, a matted (sulfided) sample is pulverized to 100 mesh or less and used for analysis of late copper, copper slag, copper scraps and the like. For gold and silver, the analytical value is obtained by a method according to “JIS M 8111 Quantitative determination method of gold and silver in ore”. For copper, the analytical value is obtained by a method in accordance with “JIS M 8121 Copper Determination Method in Ore”. Gold and silver are obtained by a dry assay method, and gold and silver grains are obtained and weighed. Thereafter, the granules are dissolved in aqua regia and gold and other elements are measured by ICP or the like. The quality of gold is obtained from the measured values such as ICP, and the quality of silver is obtained by subtracting the weight of gold and other elements from the combined grains. Copper is acid-dissolved in the analytical sample, subjected to necessary pretreatment, separation operation, etc., and then titrated with sodium thiosulfate to determine the quality.

  On the other hand, Patent Document 1 (Japanese Patent Application Laid-Open No. 2000-88713) discloses an automatic analysis sample equalizing storage device that pulverizes, mixes, and divides an analysis sample such as copper concentrate and packs the sample in a plurality of bags. Is disclosed. This analysis sample automatic equalizing storage device holds a sample once, a hopper for storing the analysis sample, a first transport device for cutting out the sample by a fixed amount, a fine pulverizer for pulverizing the sample to a predetermined particle size or less, and the like. The mixing hopper that is stirred and mixed, the valve device that is closed when the mixing hopper is in operation and released when the sample is sufficiently stirred and mixed, the second transport device that cuts out the sample by a certain amount, and the analysis sample are equally divided Equalizers that can be stored in multiple hoppers and discharged from below as needed, automatic bagging devices that pack aliquoted samples into bags and seal the mouth, and bags are received in storage boxes The sample storage device is configured to switch to the next storage box when a plurality of bags are collected.

JP 2000-88713 A

  Specifically, the analysis sample automatic equalizing storage device disclosed in Patent Document 1 uses a concentrate as a sample, finely pulverizes about 3 kg, and then uniformly agitates and mixes to about 16 at about 170 g. This is a device that divides and wraps 8 bags, and discards the others. Although it is conceivable to use the analytical sample automatic equalizing storage device disclosed in Patent Document 1 when adjusting analysis samples such as late copper, copper slag, copper scrap, etc., the target of analysis is late copper, copper slag, copper scrap, etc. It is impractical to use about 3 kg of waste copper, copper trough, copper scraps, etc. for the sample because of its high copper quality. Therefore, a high recovery rate is required before and after pulverization so that only the amount required for analysis is sampled as much as possible and the sampling amount does not decrease even after pulverization.

  In addition, since conventional fine pulverization of copper, copper slag, copper scrap, and the like has been performed in a batch manner, it took a long time to prepare a sample for analysis. In addition, since fine pulverization of 100 mesh or less is performed, powder scattering after fine pulverization has been a problem in the batch method. When the finely pulverized sample is scattered, not only the recovery rate is lowered, but also there is a possibility of mixing into other samples. Furthermore, since different types of samples were processed by the same pulverizer, contamination between samples was also a problem.

Accordingly, an object of the present invention is to provide an automatic pulverizing apparatus for an analytical sample that can automatically pulverize and collect an analytical sample and recover it at a high recovery rate before and after pulverizing. And
In addition, the analysis sample can be adjusted in a short time, there is no risk of contamination between samples, and there is no risk of scattering of the finely pulverized powder around the sample. An object is to provide an apparatus.

In order to solve the above-mentioned problem, the present invention as claimed in claim 1 is characterized in that a predetermined amount of analysis sample accommodated in a plurality of input containers is sequentially input into the hopper, and is input into the hopper. A supply device that sends out a predetermined amount of the analyzed sample and supplies it to the pulverizer, and pulverizes the analytical sample supplied by the supply device, and screens the pulverized analysis sample with a sieve of a predetermined size. The analysis sample of a predetermined size or less that has been screened is discharged through the first sample discharge chute, and the analysis sample of a predetermined size or larger remaining on the sieve is discharged through the second sample discharge chute milling equipment and, given the size than that discharged from the predetermined size following analytical sample and milling device which is discharged through a first sample discharge chute through the second sample discharge chute from milling apparatus A recovery device for storing both analysis samples in a recovery container, and a recovery device from the hopper after the finely pulverized analysis sample is recovered in the recovery container and before the next analysis sample is put into the hopper An analysis sample automatic pulverization apparatus is provided, which is configured to include a cleaning apparatus that once cleans up to a sealed state by air blow and removes the presence remaining in the system by a dust collector.

  In order to solve the above-mentioned problem, the present invention described in claim 2 is directed to the automatic pulverizing apparatus for analytical sample according to claim 1, wherein the recovery device is configured to bring the recovery container into contact with the recovery container. A container receiving portion that closes the opening is provided, whereby the finely pulverized analytical sample is prevented from being scattered while being collected.

  In order to solve the above-mentioned problem, the present invention described in claim 3 is the automatic sample crushing apparatus for analysis sample according to claim 2, wherein the cleaning device is brought into contact with the container receiving portion so that the container receiving portion is brought into contact with the container receiving portion. A cap part that is hermetically sealed until it reaches a position, and includes a cleaning closure device having a cap part connected to the dust collector, and is blown into the system by air blowing with the cap part in contact with the container receiving part. It is characterized by performing cleaning by blowing away the remaining residence and removing it with a dust collector.

  In order to solve the above-mentioned problem, the present invention according to claim 4 is the automatic pulverizing apparatus for analyzing samples according to claim 1, wherein the cleaning device is a hopper air supply means for sending cleaning air to the hopper. And hopper air discharge means for sending the hopper-cleaned air to the dust collector, supply device air supply means for sending the cleaning air to the supply device, and supply air for sending the cleaned air to the dust collector It comprises discharge means, air supply means for fine pulverization apparatus that sends cleaning air to the fine pulverization apparatus, and air discharge means for pulverization apparatus that sends clean air from the fine pulverization apparatus to the dust collector. It is characterized by that.

In order to solve the above-mentioned problem, the present invention described in claim 5 is directed to the automatic pulverization apparatus for analytical sample according to any one of claims 1 to 4, wherein the air blow by the cleaning device is at least 1 kg / m. It is characterized by being performed at a pneumatic pressure of ² .

  In order to solve the above-mentioned problem, the present invention described in claim 6 is the automatic sample crushing apparatus for analysis sample according to any one of claims 1 to 5, wherein the crushing of the sample for analysis by the crushing apparatus is performed. , Pulverizing so that the size of 100 mesh or more is at least 0.5% or less.

According to the automatic pulverization apparatus for analytical samples according to the present invention, it is possible to perform automatically and continuously from the input of the analytical sample to the pulverization and collection, so that the analytical sample can be adjusted in a short time. There is an effect that can be performed.
In addition, according to the automatic pulverization apparatus for analytical samples according to the present invention, the process from the introduction of the analytical sample to the pulverization and collection is performed in a closed system, so that the powder after pulverization is scattered. There is an effect that does not occur.
Furthermore, according to the automatic pulverization apparatus for an analysis sample according to the present invention, a hopper for feeding the analysis sample, a supply apparatus for supplying the analysis sample to the pulverization apparatus, and a pulverization apparatus for pulverizing the analysis sample are provided. Since air cleaning is performed in a sealed system, there is an effect of preventing contamination between samples.

  Hereinafter, an automatic pulverizing apparatus for analytical samples according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of an embodiment of an automatic pulverizing apparatus for analytical samples according to the present invention.

  First, the illustrated automatic pulverization apparatus 1 for an analysis sample generally includes an input device 10 that sequentially inputs a predetermined amount of an analysis sample into the hopper 20 and an analysis sample that is input into the hopper 20. The supply device 25 to be supplied to the pulverizer 30, the analysis sample supplied by the supply device 25 is pulverized, and the pulverized analysis sample 30 is sieved and discharged. A recovery device 40 that recovers the analysis sample and a cleaning device 50 that cleans the hopper 20 to the recovery device 40 by air blow are provided. Hereinafter, each part will be described.

  The analysis sample automatic pulverizing apparatus 1 is framed by a metal frame 3 so that, from the upper side, the input device 10, the hopper 20, the supply device 25, the pulverizer 30 and the recovery device 40 are sequentially positioned on the lower side. Are arranged. A platform 7 having a staircase 5 is provided along the longitudinal direction so that an operator can put an analytical sample into the loading container 11 and perform maintenance. Here, the analysis sample to be pulverized by the automatic pulverization apparatus 1 for analysis sample is, for example, late copper, copper slag, copper scrap, gold-silver slag, gold-silver swarf, etc., and has a size of about 1 mm as pretreatment in advance. After being ground, it is used as a sample.

  As shown in FIG. 1, the charging device 10 includes a drive chain 13 wound around two sprockets 13 a and 13 a and a charging container 11 attached to the drive chain 13. The drive chain 13 is driven by a drive motor 13b installed on the lower side thereof so as to circulate infinitely. The charging containers 11 are arranged in a state where 15 containers are arranged in a line, and in this embodiment, two lines are provided. Therefore, the charging device 10 includes a total of 30 charging containers 11. Of course, the number of charging containers 11 is not limited to this, and it goes without saying that an appropriate number can be attached. With this configuration, when the drive chain 13 is rotated by the drive motor 13 b, the charging container 11 attached to the drive chain 13 moves in the direction of the hopper 20. Then, when the loading container 11 reaches the position closest to the hopper 20 that is the endmost part of the drive chain 13, the analytical sample accommodated therein is thrown into the hopper 20 and turned upside down. It moves so that it may move away from the hopper 20 in the state of being fallen. While repeating this in sequence, the samples for analysis stored in the respective charging containers 11 are sequentially loaded into the hopper 20. Note that the hopper 20 is provided with a shutter (not shown), and when the input container 11 into which the analysis sample is input moves out of the hopper 20, the shutter is closed to seal the inside of the hopper 20 and input analysis. The working sample is pulverized and collected, and the sealed state is maintained until the cleaning in the system is completed. Then, the next charging container 11 stops and stands by before the hopper 20 until the series of operations is completed and the shutter is opened to be ready for receiving.

  The analysis sample put into the hopper 20 is supplied to the fine pulverizer 30 while being fed out by the supply device 25 by a predetermined amount. That is, the supply device 25 includes an electromagnetic feeder 26 and a shooter 27, and the analysis sample put into the hopper 20 is conveyed to the shooter 27 by the electromagnetic feeder 26 by a predetermined amount. The electromagnetic feeder 26 is a device that transports a sample for analysis by a predetermined amount, and the transport amount can be adjusted by a control device (not shown) provided on the operation panel 80. The analysis sample conveyed by the electromagnetic feeder 26 is supplied to the pulverizer 30 by the shooter 27 by a predetermined amount.

  The fine pulverizer 30 is an apparatus for finely pulverizing the analysis sample. As shown in FIG. 6, the fine pulverizer 30 includes a disk-shaped rotor stone 33 that is movable in a cylindrical pulverization pot 31. The sample for analysis supplied into the crushing pot 31 is rapidly pulverized by revolving along the inner wall surface of the 31 and by the self-weight and rotational movement of the rotor stone 33.

Eight square holes 37 are provided in the grinding pot 31 along the cylindrical inner wall surface, and a screen 35 of 100 mesh is attached to each square hole 37. In addition, a first sample discharge chute 30 a that discharges the analysis sample that has passed through the square hole 37 is provided. As a result, the analysis sample pulverized to 100 mesh or less in the pulverization pot 31 passes through the screen 35 and is discharged out of the pulverization pot 31 through the square hole 37, and the collection container 41 to be described later by the first sample discharge chute 30a. It has come to the inside. Here, in the present embodiment, the fine pulverizer 30 has a built-in screen 35 for performing sieving, but the structure of the fine pulverizer 30 is not limited to this. In other words, the fine pulverizer may be configured so that only fine pulverization is performed, and the finely pulverized analysis sample is screened by a sieving device provided separately from the fine pulverizer.

  On the other hand, the fine pulverizer 30 is provided with a discharge port 39 communicating with the inside of the pulverization pot 31, and the analysis sample staying in the pulverization pot 31 without passing through the screen 35 provided in the square hole 37 is The gas is discharged from the discharge port 39 to the outside. In this way, what is configured to collect the material that does not pass through the screen 35 is a pulverizing device for the purpose of measuring the quality of the sample for analysis. This is because it needs to be recovered. However, it is not preferable for analysis to contain a large amount of a size that does not pass through the screen 35, so that the size of 100 mesh or larger is at least 0.5% or less.

  The discharge port 39 is provided with an opening / closing mechanism (not shown) that operates an air cylinder cylinder to open and close the discharge port 39 for sealing and opening. When the pulverization is finished, the analysis sample that has been opened and did not pass through the screen 35 of the square hole 37 is discharged. Done. Further, the discharge port 39 is connected to the second sample discharge chute 30b, and the 100-mesh over analysis sample discharged from the discharge port 39 is guided into a collection container 41 to be described later for recovery.

  In order to collect almost all of the sample for analysis finely pulverized by the pulverizer 30, the sample for analysis finely pulverized by the first sample discharge chute 30a and the second sample discharge chute 30b is collected in the recovery container 41. It is effective to perform the idling operation of the pulverizer 30 for a while after the collection. Due to the idling operation of the rotary drive device 30, the analysis sample attached to the system such as the inner wall of the grinding pot 31 and the inner walls of the first sample discharge chute 30a and the second sample discharge chute 30b is shaken off by vibration. This is because the recovery rate is improved.

Next, the sample for analysis finely pulverized by the fine pulverizer 30 passes through the screen 35 and is discharged out of the pulverization pot 31 through the square hole 37 and is transported by the first sample discharge chute 30a. The analysis sample and the 100-mesh over analysis sample staying in the crushing pot 31 without passing through the screen 35 and being transported from the discharge port 39 by the second sample discharge chute 30b are recovered by the recovery device 40.
As shown in FIG. 1, the collection device 40 includes an elliptical conveyor 43 that is pivotally supported by two rotating shafts 43a and 43a. The conveyor 43 is driven by a drive motor 43b to rotate horizontally and circulate indefinitely. It has become. On the conveyor 43, a recovery container 41 for recovering the analytical sample carried by the first sample discharge chute 30a and the second sample discharge chute 30b is attached. The same number of recovery containers 41 as the input containers 11 provided in the input device 10 are arranged, and the samples for analysis stored in the input containers 11 are recovered in the recovery containers 41, respectively. ing. Therefore, a total of 30 collection containers 41 are attached to the collection device 40.

  Here, the first sample discharge chute 30a and the second sample discharge chute 30b are merged at the tip side (for example, the lower side in FIG. 3), and the container receiving portion 45 is provided at the lower side of the merged portion. . The container receiving part 45 closes the opening 41a of the collection container 41 by contacting the upper opening 41a of the collection container 41, thereby preventing scattering of the pulverized analysis sample. It functions to collect. The collection container 41 is brought into contact with the container receiving portion 45 by an air cylinder 47 disposed on the lower side of the conveyor 43. As a result, the finely pulverized analysis sample is collected in the collection container 41.

The analysis sample automatic pulverization apparatus 1 further collects the pulverized analysis sample from the hopper 20 after collecting the pulverized analysis sample in the collection container 41 and before putting the next analysis sample into the hopper 20. A cleaning device 50 is provided that once cleans up to 40 in a sealed state and cleans by air blow, and removes residences remaining in the system.
As shown in FIG. 5, the cleaning device 50 includes a valve 50 a connected to an air supply source (not shown) and four valves 51, 52, 53, and 54 that divide the supplied air into four paths. The valve 51 is connected to the electromagnetic feeder 26 of the supply device 25 by the air supply pipe 51a, the valve 52 is connected to the hopper 20 by the air supply pipe 52a, and the valve 53 is connected to the shooter 27 by the air supply pipe 53a. 54 is connected to the pulverizer 30 by an air supply pipe 54a. The hopper 20 and the dust collector 60 are connected by the air exhaust pipe 55, the shooter 27 and the dust collector 60 are connected by the air exhaust pipe 56, and the pulverizer 30 and the dust collector 60 are connected by the air exhaust pipe 57 described later. The air supplied from the valves 51, 52, 53, 54 is exhausted. As a result, the analytical sample remaining in the system, so-called “living” is blown off and removed by the dust collector 60 to clean the system cleanly. The air blow at the time of cleaning is preferably performed with an air pressure of at least 1 kg / m ² for removing the presence.

  Here, the cleaning device 50 includes a cleaning closure device 70 having a cap portion 71 that seals from the hopper 20 to the container receiving portion 45 by contacting the container receiving portion 45. The cap portion 71 has substantially the same shape as the collection container 41 and is formed so as to move up and down by the air cylinder 73 and come into contact with the container receiving portion 45. The cap unit 71 is connected to the dust collector 60 by an air exhaust pipe 57, and the cap unit 71 is in contact with the container receiving unit 45 alternately with the collection container 41 to collect the finely pulverized analysis sample. It is designed to clean the system. That is, when the analysis sample put into the hopper 20 is pulverized and collected in the collection container 41, the collection container 41 comes into contact with the container receiving portion 45 in the state shown in FIG. When the system from 20 to the container receiver 45 is cleaned, the cap 71 is brought into contact with the container receiver 45 in the state shown in FIG. Crushing and cleaning are performed while repeating this alternately.

  The dust collector 60 is a device that filters and collects dust in the system including finely pulverized analysis samples and the like contained in the exhaust air sent through the air exhaust pipes 55, 56, and 57. The exhaust air that has been cleanly cleaned by the dust collector 60 is exhausted into the atmosphere.

  Note that a series of operations including loading of the sample for analysis into the hopper 20 by the loading container 11, supply to the pulverizer 30, pulverization, recovery, and cleaning of the system are provided in a control device (not shown) provided in the operation panel 80. In addition, the timing is adjusted automatically by the control device (not shown) installed in the operation panel 80.

  Next, the operation of the above-described analysis sample automatic pulverizing apparatus 1 will be described. First, samples to be analyzed such as late copper, copper slag, copper scrap, gold slag, sliver sliver, etc. are made into sulfides for each predetermined lot, and then crushed to a size of 1 mm or less to pre-process samples for analysis I do. Then, a predetermined amount of the analysis sample for each lot is stored in the input container 11 of the input device 10. Then, the operation is started by the operation panel 80 of the automatic pulverizing apparatus 1 for the sample for analysis. After the operation is started, charging, pulverizing, collecting, and cleaning into the hopper 20 described below are continuously and automatically performed.

  When the operation is started, the driving motor 13b of the charging device 10 is operated to rotate the driving chain 13, whereby the charging container 11 is moved to the hopper 20 side. When the input container 11 reaches the vicinity of the hopper 20, the analytical sample that is tilted and accommodated therein is input into the hopper 20. When the charging container 11 after charging has fallen away from the hopper 20, the shutter (not shown) is closed and the hopper 20 is sealed. At the same time, the collection container 41 of the collection device 40 is pushed upward by the air cylinder 47 and comes into contact with the container receiving part 45 to reach the collection container 41 from the hopper 20 to be a sealed system that is cut off from the outside.

  Analytical samples put into the hopper 20 are conveyed by a predetermined amount to the shooter 27 by the electromagnetic feeder 26 of the supply device 25 and supplied to the pulverizer 30 by the shooter 27. The analysis sample put into the fine pulverizer 30 is finely pulverized by a rotor stone 33 rotating in the pulverization pot 31, and those under 100 mesh pass through the screen 35 and pass through the square hole 37 to the first sample discharge chute 30a. Then, it is discharged into the collection container 41. On the other hand, the 100-mesh over analysis sample remaining in the crushing pot 31 without passing through the screen 35 opens an opening / closing mechanism (not shown) from the discharge port 39 through the second sample discharge chute 30b into the recovery container 41. Discharged. Even after the finely pulverized analysis sample is accommodated in the collection container 41, the fine pulverizer 30 is idled to completely recover the analysis sample present in the system.

  The collection container 41 after collection of the finely pulverized analysis sample is separated from the container receiving section 45, and instead of the collection container 41, the cap section 71 of the cleaning closure device 70 is pressed against the container receiving section 45. It is done. Then, with the inside of the system sealed, pressurized air is blown by the cleaning device 50 and the air from the hopper 20 to the container receiving portion 45 is cleaned by air blowing. As shown in FIG. 5, pressurized air supplied from an air supply source (not shown) is blown into the hopper 20, the electromagnetic feeder 26, the shooter 27, and the fine pulverizer 30 through valves 51, 52, 53, and 54, respectively. The existing residence is blown off and sent to the dust collector 60 by the air exhaust pipes 55, 56, 57.

  When the inside of the system is cleaned by the pressurized air, the cap part 71 is separated from the container receiving part 45, and a new charging container 11 is brought into contact with the container receiving part 45. Then, a shutter (not shown) of the hopper 20 is opened, and the input device 10 is operated so that a new input container 11 supplies a new sample for analysis into the hopper 20, and the pulverization, recovery, and cleaning described below are sequentially performed. repeat. If the automatic sample crushing apparatus 1 for analysis is provided with a timer so that the analysis sample is automatically pulverized at night, the sample adjustment is completed on the next morning and analysis is started immediately. Can be used effectively.

About 150 g of the analysis sample made of gold and silver slag, gold and silver scrap, and late copper after being coarsely pulverized to 1 mm or less are charged into the input container 11, and 28 analytical samples are automatically pulverized 1 Was pulverized. The analysis sample automatic pulverization apparatus 1 is operated for about 2 minutes for the initial preparation of the sample for analysis, and the pulverization / cleaning for each input container 11 is about 4 minutes for the pulverization process and about 40 seconds for the cleaning process. Of these, actual cleaning was performed by applying 1 kg / m ² of pressurized air with air pressure for 3 seconds, waiting for 10 seconds, and air blowing for 3 seconds. Therefore, the pulverization process of 28 analysis samples required a time of 4 minutes and 40 seconds for pulverization / cleaning, and about 5 minutes × 28 = about 2 hours and 20 minutes as a whole. And the driving | running by this condition was performed twice. The recovery rates of the analytical samples at this time are shown in Tables 1 and 2, respectively.

  As shown in Tables 1 and 2, the ratio (recovery rate) between the weight of the analytical sample before loading (original amount) and the weight of the analytical sample collected after pulverization (recovered amount) is clear. Moreover, the average recovery rates were 99.36% and 99.27%, respectively.

  As described above, the preferred embodiment of the present invention has been described in detail. However, the present invention is not limited to the specific embodiment, and within the scope of the gist of the present invention described in the claims, Needless to say, various modifications and changes are possible.

It is a front view of one Embodiment of the automatic pulverization apparatus of the sample for analysis which concerns on this invention. It is a top view of the automatic pulverization apparatus of the sample for analysis shown in FIG. It is a side view which shows the state in the case of collect | recovering the pulverized analytical sample. It is a side view which shows the state in the case of cleaning by air blow. It is a block diagram which shows the flow of air. It is front sectional drawing which shows schematic structure of a pulverizer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Analytical sample automatic pulverization device 3 Frame 5 Stair 10 Input device 11 Input container 13 Drive chain 13a Sprocket 13b Drive motor 20 Hopper 25 Supply device 26 Electromagnetic feeder 27 Shutter 30 Fine pulverizer 30a First sample discharge chute 30b Second sample discharge chute 31 Crush pot 33 Rotor stone 35 Screen 37 Square hole 39 Discharge port 40 Recovery device 41 Recovery container 41a Opening portion 43 Conveyor 43a Rotating shaft 43b Drive motor 45 Container receiving portion 47 Air cylinder 50 Cleaning device 50a Valve 51, 52, 53, 54 Valves 51a, 52a, 53a, 54a Air supply pipes 55, 56, 57 Air exhaust pipe 60 Dust collector 70 Cleaning closure machine 71 Cap section 73 Air cylinder 80 Operation panel

Claims (6)

A loading device for sequentially loading a predetermined amount of analysis sample contained in a plurality of loading containers into a hopper;
A supply device for feeding a predetermined amount of the analytical sample put into the hopper and supplying it to the pulverizer;
The analytical sample supplied by the supply device is finely pulverized, the finely pulverized analytical sample is sieved with a sieve of a predetermined size, and the sieved analytical sample of a predetermined size or less is discharged into the first sample. A fine pulverizing apparatus for discharging the sample for analysis having a predetermined size or more remaining on the sieve through the second sample discharge chute, while discharging through the chute;
Analytical sample of a predetermined size or less discharged from the fine grinding device through the first sample discharge chute and analytical sample of a predetermined size or larger discharged from the fine grinding device through the second sample discharge chute A collection device for storing the samples together in a collection container;
After the finely pulverized analytical sample is collected in the collection container and before the next analytical sample is put into the hopper, the hopper and the collection device are once sealed and cleaned by air blow. A cleaning device that removes the remaining residence in the dust collector,
A device for automatically pulverizing an analysis sample, comprising: In the automatic pulverization apparatus of the analytical sample according to claim 1,
The collection device includes a container receiver that closes the opening of the collection container by bringing the collection container into contact with the collection apparatus, thereby collecting the pulverized analysis sample while preventing scattering. An automatic pulverizing apparatus for analytical samples, characterized in that it is configured as described above. In the automatic pulverization apparatus of the analytical sample according to claim 2,
The cleaning device is a cap unit that comes into a sealed state from the hopper to the container receiving unit by contacting the container receiving unit, and includes a cleaning blocker having a cap unit connected to the dust collector. For cleaning by blowing away air remaining in the system by air blowing in a state in which the cap part is in contact with the container receiving part and removing it with the dust collector. Automatic sample pulverizer. In the automatic pulverization apparatus of the analytical sample according to claim 1,
The cleaning device comprises:
Hopper air supply means for sending cleaning air to the hopper, and hopper air discharge means for sending air that has cleaned the hopper to the dust collector;
An air supply means for supply device for sending cleaning air to the supply device, and an air discharge means for supply for sending air cleaned with the supply device to the dust collector;
An air supply means for fine pulverization apparatus for sending cleaning air to the fine pulverization apparatus, and an air discharge means for minute pulverization apparatus for sending air cleaned with the fine pulverization apparatus to the dust collector;
A device for automatically pulverizing an analysis sample, comprising: In the automatic pulverization apparatus for the analytical sample according to any one of claims 1 to 4,
2. The apparatus for automatically pulverizing an analysis sample, wherein the air blow by the cleaning device is performed at an air pressure of at least 1 kg / m ² . In the automatic pulverization apparatus of the analytical sample according to any one of claims 1 to 5,
An analysis sample automatic pulverization apparatus, wherein the analysis sample is pulverized by the pulverization apparatus so that a size of 100 mesh or more is at least 0.5% or less.

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