JPS59182317A - Quantitative sampling device for powder - Google Patents

Abstract

PURPOSE:To perform accurate and speedy sampling by providing means which suck and discharge the air in a quantitative sampling measure whose back part is partitioned with a filter through a filter. CONSTITUTION:While the quantitative sampling measure 1 is put in contact with or close to accumulated powder 4, a cross valve 7 is operated to allow the communication between the quantitative sampling measure 1 and a sucking means 5, and the quantitative sampling measure 1 is held under negative pressure to suck the powder 4 into the quantitative sampling measure 1. Then, the quantitative sampling measure 1 is moved to the place where a sampling container is installed, and the cross valve 7 is operated to make the communication between the quantitative sampling measure 1 and a discharging means 6, fall the powder in the sampling container.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Technology) The present invention relates to a powder quantitative sampling device for sampling a fixed amount of powder from accumulated powder.

(Prior Art) As a method for collecting a sample to analyze the components of powder, there is a method in which, for example, a spoon or the like is used as a tool and a desired amount is manually collected from the deposited powder. or,
There is also a method of collecting a desired amount of sample using packets without human intervention.

However, these conventional methods have problems in that the amount of samples to be collected depends largely on human intuition, and the bucket 1 is unstable in operation, resulting in poor quantitative performance and rapidity.

(Objective of the Invention) The present invention has been made in view of this point, and its purpose is to provide a powder quantitative sampling device that is highly quantitative (and capable of rapid sampling).

(Structure of the Invention) The present invention, which has achieved the above-mentioned objects, comprises a quantitative sampling tank whose back is partitioned with a filter, means for sucking the air inside the sampling tank through the filter, and and a discharge means for sending air through the filter.

(Example of the invention) Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

In the figure, reference numeral 1 denotes a cell whose back 2 is partitioned by a filter 3, and the frontage of l'Jl 1 is brought into contact with or close to the deposited powder 4 by a drive device (not shown) or the like. 5 is for quantitative sampling 1
6 is a suction means consisting of a negative pressure source that sucks air through the filter 3, 6 is a discharge means consisting of a positive pressure source that sends air into the quantitative sampling 1 through the filter 3, and 7 is suction into the quantitative sampling 1. It is a three-way switching valve that communicates with the means 5 or the discharge means 6.

Next, the operation of the powder quantitative sampling device having the above configuration will be explained with reference to FIG. 1 and FIGS. 2 (a) and (b).

When the quantitative sampling device 1 is brought into contact with or close to the deposited powder 4 and the three-way opening piece 7 is operated to communicate the quantitative sampling device 1 with the suction means 5, the air inside the quantitative sampling device 1 is Filter 3
The powder 4 is sucked into the fixed-suspension sampling tank 1 to create a negative pressure, and the powder 4 is sucked into the quantitative sampling tank 1. At this point, since the back of quantitative sampling 1 is partitioned by filter 3, powder 4
does not flow into the suction means 5, and the inside of the quantitative sampling device 1 is filled with the powder 4. In addition, in this state, even if the quantitative sampling device 1 is removed from the accumulated powder 4, the powder filling the inside of the sampling chamber 1 will not fall because it is being sucked by the suction means 5. (See Figure 2 (a)).

Next, move the quantitative sampling device 1 to the location where the collection container is installed, operate the three-way opening piece 7, and communicate the quantitative sampling device 1 with the discharge means 6, and the inside of the quantitative sampling device 1 becomes positive pressure. The powder that filled the collection tank 1 falls into the collection container (the second
(See figure (b)).

The above operation allows a predetermined amount of sample to be collected into the collection container.

It should be noted that even if there is powder that protrudes from the fixed hanging sampling tank 1 during the suction operation, there is no problem in quantitative performance as long as the amount of powder that protrudes from the fixed hanging sampling tank 1 is at dusk compared to the volume of the quantitative sampling υ]1.

Furthermore, by adjusting the suction strength of the suction means 5, this amount of protrusion can be considerably reduced. However, if it is necessary to further increase the accuracy of the sample collection amount, the steps shown in Figure 3 (a) and (b) should be performed before moving from the suction operation to the discharge operation.
As shown in FIG. 2, the scraper 8 may be used to scrape off the powder protruding from the fixed sampling box 1. In this case, it is preferable to collect enough powder before scraping, so it is better to increase the suction strength.

FIGS. 4(A) and 4(B) are explanatory diagrams of other embodiments of the present invention. In the figure, the same parts as in Figure 1 are given the same symbols,
The explanation will be omitted. In the figure, 9 is a suction/desorption nozzle whose chamber is connected to the suction means 5 or the discharge means 6 through a three-way spout, and 10 is fixed to the suction/desorption nozzle 9.
j a fixing hook rotatably pivoted to the support member 11;
13 is a fixing hook fixed to the suction/desorption nozzle 9/= pivoted to the support member 14, and 15 and 16 are hooks 1, respectively.
This is a compression spring that biases 0.13 in the clamping direction. Under normal usage conditions, Fig. 4 (a)
As shown, one end 10a of the fixing hooks 10 and 13
and 13a are compression springs 15 and 1
6 in the direction of the arrow to clamp (hold) the body of the quantitative sampling device 1 connected to the adsorption/desorption nozzle 9. Further, as shown in FIG. 4(B), when a force in the direction of arrow B is applied manually or by another device to the other ends 10b and 13b of the fixing hooks 10 and 13, one end 10a of the fixing hooks 10 and 13 and 1.3 a is displaced in the direction of arrow C, and quantitative sampling 1 is detached from adsorption/desorption nozzle 9.

In such a configuration, when the quantitative sampling device 1 is connected to the adsorption/desorption nozzle 9, a predetermined amount of powder can be sampled as in the case shown in FIG. Quantitative sampling 1711 can be replaced quickly and easily (necessary in cases where mixing of collected samples is to be avoided).

FIG. 5 is an explanatory diagram of still another embodiment of the present invention. The features of this embodiment include switching of the means for communicating with quantitative sampling 1;
That is, communication with the suction means 5 or the discharge means 6 is provided by two three-way L1 valves 17 and 18 instead of the three-way opening piece 7.

In this configuration, by switching the two three-way valves 17 and 18, a predetermined amount of powder can be sampled as in the case shown in FIG.

(Effects of the Invention) As explained above, according to the present invention, a predetermined amount of powder can be collected accurately and quickly.

Moreover, if an operation is added to scrape off the powder protruding from the quantitative sampling chamber with a scraper before shifting from the suction operation to the discharge operation, it becomes possible to collect the powder quantitatively with higher accuracy.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention, FIGS. 2 and 3 are explanatory diagrams showing the operation of an embodiment of the present invention, and FIGS. It is an explanatory view showing an example of. 1... Constant m sampling chamber 2... Back 3... Filter 4... Powder 5... Suction means
6...Discharge means 7...Two-way valve 8...
・Scraper 9...Adsorption/desorption nozzle 10.13...Fixing hook 15.16...Spring 17.18...Two-way valve

Claims (1)

[Claims] A powder consisting of a quantitative sampling chamber whose back is partitioned with a filter, a means for suctioning air from the quantitative sampling pine through the filter, and a discharge means for sending air into the quantitative sampling pine through the filter. Body quantitative sampling device.