JPH0144470Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a suction and discharge type container.

Conventionally, as shown in FIG. 1, powder and granular materials were introduced through an input port 2 of a container 1, and after being transported to a predetermined location, a lower discharge port 3 was opened to take out the contents. Particularly when the contents of the container 1 are raw materials for foods, drinks, medicines, etc., contamination with dust must be avoided. Therefore, as shown in Fig. 2, after closing the input port 2 of the container 1 with the lid 4 and sealing it,
A suction transport device 7 equipped with a negative pressure prevention tube 6 was inserted into a discharge tube 5 provided at the bottom of the tube to generate suction. According to this, there is a gap between the discharge pipe 5 and the suction transport device 7, so that the container 1 communicates with the atmosphere, and there is a possibility that dust in the atmosphere may mix into the contents of the container 1. To solve this problem, there is a container 1 shown in FIG. This allows a suction transport pipe to be airtightly connected to the discharge pipe 5 of the container 1, and a negative pressure prevention pipe with a filter or a negative pressure prevention pipe 8 for sucking clean air is connected to the bottom of the container 1. . By the way, when discharging the contents of powder or granular materials by pneumatic transportation, the larger the amount of air, the less the amount of the contents will be discharged.If the amount of air is decreased, the amount of the contents will be discharged, but the amount of air will be too small. If this occurs, the flow path will be blocked, and the solid-air ratio, which is the volume ratio between the transported material and the amount of air, is optimally about 30%, but the amount of air inflow is fixed by the inflow cross-sectional area of the negative pressure prevention pipe 8. Therefore, its discharge capacity is necessarily determined. Therefore, in order to be able to adjust the amount of air according to the amount of discharged contents, a flow rate adjustment valve 9 is installed in the discharge pipe 5 and the negative pressure prevention pipe 8, which are separately provided at the bottom of the container 1, as shown in Fig. 4. Some connect an interposed secondary air bypass pipe 10. With this, a part of the air that has flowed into the negative pressure prevention pipe 8 is diverted and flows into the secondary air bypass pipe 10, and the amount of air flowing into the container 1 from the negative pressure prevention pipe 8 is reduced. If there is not too much, secondary air bypass pipe 1
The amount of air flowing into the secondary air bypass pipe 10 may decrease and the required amount of air may not be sufficient. Conversely, if a large amount of diverted air flows into the secondary air bypass pipe 10, the amount of air flowing into the container 1 from the negative pressure prevention pipe 8 will be reduced. This means that the amount of air will not flow in. Therefore, in order to prevent the amount of air required for the negative pressure prevention pipe or the secondary air pipe from being affected by other pipes, the present invention has been developed to ensure that the upstream ends of the secondary air pipe and the negative pressure prevention pipe One end is inserted into the air intake pipe to form a double pipe, and the other end of the pipe is connected to the air intake pipe at a location separated from the above pipe end.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 5 shows the outline thereof, and a discharge pipe 5 is connected to the discharge port 3 at the bottom of the container 1. One end of the negative pressure prevention tube 12 is connected to the downstream side of the air intake tube 11 which has one end open and the other end closed, and the other end outlet of the negative pressure prevention tube 12 is opened upward inside the container 1.
A secondary air pipe 13 with a flow rate regulating valve 9 interposed therebetween has one end inserted into the air intake pipe 11 and the other end connected to the discharge pipe 5. As shown in FIG. 6, the tube end 13A of the secondary air tube 13 is located on the air intake port 11A side of the air intake tube 11 to form a double tube with the air intake tube 11, and the tube end 13A is located on the downstream side of the air intake tube 11. A negative pressure prevention pipe 12 is connected to a position separated from the pipe end 13A of the secondary air pipe 13. The pipe end 13A of the secondary air pipe 13 is connected to the air intake port 11A of the air intake pipe 11.
The filter 14 is brought into contact with the tube end 13A, and the filter 14 covers the protrusion of the air intake tube 11. Further, a secondary air pipe 1 having one end opened in the air intake pipe 11 is provided.
As shown in FIG. 7, 3 is branched and provided with a check valve 15 and a flow rate regulating valve 9, respectively, and the other end is connected to the discharge pipe 5. Caps 16 and 1 are provided at the ends of the air intake pipe 11 and the exhaust pipe 5, respectively.
7 is screwed on so that it can be opened and closed.

When discharging the contents of the powder or granular material from this container 1, after closing the lid 4 airtightly, the caps 16, 17
is removed, the discharge pipe 5 is airtightly connected to the suction transport pipe, and the contents are discharged by adjusting the air inflow rate of the flow rate regulating valve 9.

The present invention provides a suction and discharge type container in which, as described above, a discharge pipe and a negative pressure prevention pipe are separately connected to the container, and a secondary air pipe with a flow rate adjustment valve is connected to the discharge pipe. Either one of the upstream pipe ends of the secondary air pipe and the negative pressure prevention pipe is inserted into the air intake pipe to form a double pipe, and the other pipe end is separated from the air intake pipe at a location. This is a suction/discharge type container connected to the secondary air pipe and the upstream opening of the negative pressure prevention pipe. The required amount of air can be supplied without being affected by anything else.

As shown in the embodiment, since the negative pressure prevention pipe and the secondary air pipe are connected to one air intake pipe, only one filter and one cap are required, resulting in good workability. Further, since the secondary air pipe is a double pipe and is made to protrude from the air intake pipe and is covered with a filter, the filter area can be increased and clean air can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of a conventional container, FIGS. 2 to 4 are front views of a suction and discharge type container that has been developed, and FIG. 5 is a front view showing an outline of the present invention.
FIG. 6 is a front view of the main part of the present invention, FIG. 7 is a plan view of FIG. 6, and FIG. 8 is a front view of the discharge section. 5... Discharge pipe, 9... Flow rate adjustment valve, 12... Negative pressure prevention pipe, 13... Secondary air pipe, 11... Air intake pipe.

Claims (1)

[Scope of utility model registration request] In a suction/discharge type container in which a discharge pipe and a negative pressure prevention pipe are connected to the container separately, and a secondary air pipe with a flow rate adjustment valve is connected to the discharge pipe, the secondary air pipe and the negative pressure prevention pipe are A suction device characterized in that either one of the upstream pipe ends of the pipe is inserted into the air intake pipe to form a double pipe, and the other pipe end is connected to the air intake pipe at a location separated from the pipe end. Ejection type container.