JPH01181200U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a partial sectional view of a dust-proof storage container according to an embodiment of this invention with a dust measuring device installed;
Fig. 2 is a cross-sectional view showing another embodiment of this invention, Fig. 3 is a cross-sectional view showing a conventional dust-proof storage container, and Fig. 4 is a state in which a dust measuring device is set in the dust-proof storage container shown in Fig. 3. FIG. In the figure, 1 is a dustproof storage container, 3 is a storage chamber,
4a is an exhaust opening, 4b is an intake opening, 9 is a flow path, 10a and 10b are communicating portions, and 11 is an on-off valve. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] In a dust-proof storage container that has a storage chamber in which the amount of dust is to be controlled and is connected to a measuring device that measures the amount of dust to measure the amount of dust inside the storage chamber, the container is provided separately from the storage chamber. , a flow path having an exhaust opening and an intake opening communicating with the outside, and further having a communication portion communicating with the storage chamber, provided in the communication portion of this flow path with the storage chamber, and usually is closed and is opened only when the measuring device measures the amount of dust in the storage chamber and removes the dust after removing the dust in the flow path, and when the measurement of the amount of dust in the storage chamber and the gas purification are completed and the above measurement is performed. A dust-proof storage container characterized in that it is provided with an opening/closing means that is closed again when the machine is removed from the exhaust opening and the intake opening.