JPS6335392Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a collecting device used to collect articles from the outside while being transported in a closed container.

Conventionally, when transporting highly dust-producing powder and granular materials, hazardous substances, and other hazardous materials, transport equipment was installed in a closed container under pressurized or negative pressure to avoid adverse effects on the human body or the surrounding environment. , transportation is carried out using this transportation device. In such a closed conveyance device, it may be necessary to collect a part of the substance being conveyed as a sample. In such cases, the material being transported will not leak to the outside, and
without affecting the pressure inside the closed container.
It is also desirable to be able to collect samples almost automatically.

The object of this invention is to provide a collection device capable of collecting the desired sample as described above.

Hereinafter, this invention will be explained in detail based on one embodiment shown in the drawings. In FIG. 1, reference numeral 2 denotes a closed container, the inside of which is kept under pressurized or negative pressure, and furthermore, inside the container is a conveying device, for example, a belt conveyor 6, for conveying powder and granular material 4 with high dust-generating properties. The belt conveyor 6 and the space into which the granular material 4 falls form part of the conveyance path.

A collection case main body 12 is attached to the outside of one side wall 10 of the container 2 facing the space in which the powder and granules fall from the belt conveyor 6, and the collection case main body 12 and the closed container 2 are connected through a communication hole 14. They are in communication, and both maintain an airtight state. A box-shaped part 16 is attached to the lower part of the collection case body 12 and is detachable therefrom. This box-shaped part 16
The collection case body 12 maintains an airtight state while being attached to the collection case body 12.

An air cylinder 18 is airtightly attached to the outside of the collection case body 12, and its rod 2
0 has a length that allows the tip to move forward and backward between the inside of the collection container main body 12 and a portion slightly in front of a portion of the conveyance path in the closed container 2 via the communication hole 14.

A collection container 22 is attached to the tip of the rod 20, and the lower part of the collection container 22 is opened as shown in FIGS. 2 and 3. An opening/closing gate plate 26 having a shape capable of covering this opening 24 is rotatably attached to the lower end of the wall of the collection container 22 on the side of the closed container 2. A pressing spring 30 is attached to the opening 26 as shown in FIG. 4 to press the opening/closing gate plate 26 so as to close the opening 24.

A control member 32 is provided on the inner surface of one side wall of the collection case body 12, as shown in FIG. When the control member 20 is in its most retracted state, the control member 32 contacts the opening/closing gate 26 and opens it against the force of the pressing spring 30.

A sealing plate 34 is provided on the wall of the collection case body 12 on the side of the sealed container 2. This sealing plate 34 is formed into a disk shape somewhat larger than the communication hole 14, and covers the communication hole 14 when the collection container 22 is located in the collection case 12 body. 36
38 is a packing, and 38 is a sealing material, which are used to completely isolate the collection case body 12 from the closed container 2 in a sealed state.

The article collecting device configured as described above collects a sample in the following manner. Now, as shown in FIG. 1, the box-shaped part 16 is attached to the collection case main body 12,
It is assumed that the rod 20 of the air cylinder 18 has advanced the most as shown by the dashed line, and the collection container 22 is located within the powder 4 falling from the conveyor 6. In this state, the opening/closing gate 26 covers the opening 24 of the collection container 22 due to the action of the pressing spring 30, so the powder 4 is collected in the collection container 22. In this state, when the rod 20 is moved backward and a part of the collection container 22 enters the collection case body 12 as shown in FIG. 3, the opening/closing gate 26 comes into contact with the control member 32. Furthermore Rod 2
0 retreats, the control member 32 accordingly opens the opening/closing gate 26 against the acting force of the pressing spring 30. Then, as shown in Figure 2, the rod 2
0 is in the most retracted state, the opening/closing gate 26 is completely opened, and the powder and granular material 4 in the collection container 22 is in the box-shaped part 1.
Fall within 6. At this time, the collection container 22 and the sealing plate 34 that have retreated cover the ventilation hole 14 and cut off the collection case body 12 and the closed container 2. In this state, the box-shaped part 16 is attached to the collection case main body 12.
Once removed, sample collection is complete. When collecting a sample again, the rod 20 may be advanced. During this progress, the opening/closing gate 26 is opened by the control member 32.
and the opening 24 of the container 22 is covered;
When the rod 20 is in its most advanced state, the container 22 enters into the falling powder or granular material 4. The rest is the same as described above.

The sample collection device according to this invention has an opening/closing gate 2 when the collection container 22 is located inside the closed container 2.
6 covers the opening 24 of the collection container 22, and the control member 32 opens the opening/closing gate 26 when the collection container 22 is located within the collection case body 12. This allows sample collection to be carried out automatically. Furthermore, when the collection container 22 is located inside the collection case main body 12, the sealing plate 34 completely blocks off the collection case main body 12 and the closed container 2. The granular material 4 does not leak from the container 2 and does not affect the pressurized state or negative pressure state inside the closed container 2.

In the above embodiment, the air cylinder 18 is used as the drive source, but other drive sources such as a hydraulic cylinder or a motor can also be used.
This may be operated manually. Furthermore, although the box-shaped portion 16 is provided in the collection case body 12 in a detachable manner, it is provided integrally with the collection case body 12.
6 may be provided with an opening window, through which the collected sample may be taken out. In this case, it is necessary to maintain the inside of the box-shaped part 16 airtight with the window closed. moreover,
Although the closed conveyance device is shown as one that conveys powder or granular materials, it may also be one that conveys harmful substances, dangerous substances, and the like.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted vertical cross-sectional view of a closed conveyance device implementing an article collecting device according to this invention, Fig. 2 is an enlarged sectional view of the same article collecting device with a collection container located inside the collection case body, and Fig. 3 The figure is an enlarged sectional view showing the state in which the collection container of the same article collection device is being moved;
FIG. 4 is a sectional view taken along line A--A in FIG. 3. 2... Airtight container, 6... Conveyor, 12,
16... Collection case, 14... Communication hole, 20...
Rod (arm), 22... Collection container, 24... Opening,
26... Opening/closing gate, 30... Pressing spring, 32...
...Control member, 34... Sealing plate.

Claims (1)

[Scope of utility model registration request] In a closed conveyance device in which an article is conveyed along a conveyance path provided in a closed container, a sealable collection case is provided outside the closed container and communicates with the closed container through a communication hole, and the inside of the collection case is The collection case is provided with an arm whose tip moves forward and backward through the communication hole between the conveyance passageway in the airtight container and the tip of the arm, and the tip of the arm is formed of a gate plate whose top surface is open and whose bottom surface can be opened and closed. a collection container is provided, and the collection container is provided with a spring that presses the opening/closing gate plate in a normally closed state, and the collection container contacts the opening/closing gate plate while the collection container is located in the collection case, and the spring is pressed against the opening/closing gate plate. A control member that opens the opening/closing gate plate against the acting force is provided protruding into the collection case, and a sealing plate that closes the communication hole when the collection container is located in the collection case is provided on the arm to open the opening/closing gate plate. An article collection device for a closed conveyance device provided further beyond the container.