JPH08151096A - Powder guide device - Google Patents

Abstract

PURPOSE: To obtain a powder guide device capable of supplying a charged powder to the bag provided under the device without bonding the powder to the device. CONSTITUTION: A flexible and substantially air impermeable first cylindrical sheet 20 is provided along the inner surface of a hopper part 11 and a second cylindrical sheet consisting of the adhesion part 41 bonded to the surface of the first cylindrical sheet 20 and the suspension part 42 extending from the lower end of the adhesion part 41 in a vertical direction is provided to the opening of the hopper part 11 in a suspended state. Further, air introducing means 30, 31, 32 guiding air pressure to the gap between the hopper part 11 and the first cylindrical sheet 20 to expand the first cylindrical sheet 20 toward the inside of the hopper part and degassing means 30, 31, 33 contracting the expanded first cylindrical sheet 20 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder guide device suitable for supplying powder to a bag or the like.

[0002]

2. Description of the Related Art Conventionally, bags such as chemicals and foods having a particle diameter of several microns to several millimeters are passed through a funnel-shaped powder guiding device so that the powder is not spilled. Supply to a wide range of fields.

However, the powder contains water, or depending on the type of the powder, the powder adheres to the inner peripheral surface of the funnel-shaped powder guide device, and for example, the drop amount of the powder may become insufficient. Therefore, in the case of powder for which particularly strict weighing is desired, there is a powder guide device that can supply the powder dropped on the inner peripheral surface of the funnel-shaped guide device to the bag provided below without adhering to the guide device. Is desired.

[0004]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above problems, and a first means is a funnel shape having a side wall which gradually decreases downward from an opening formed at an upper end thereof. Main body including a hopper portion and a tubular portion that extends substantially vertically from the lower end of the hopper portion, and an annular upper edge portion and an annular lower edge portion along the tubular inner peripheral surface of the hopper portion. Are airtightly fixed to the upper end and the lower end of the hopper, respectively, and form a ring-shaped non-fixed portion between the hopper and the flexible and substantially gas-impermeable first part. The opening of the hopper portion, which includes a tubular sheet of No. 1, an attached portion attached to the surface of the first tubular sheet, and a hanging portion extending substantially vertically from the lower end of the attached portion. Flexible second cylindrical sheet suspended from the A gas pressure introducing means having a through hole and introducing a gas pressure to the annular non-fixed portion through the through hole to inflate the first tubular sheet inside the hopper portion; and the gas pressure resistance introducing means. And a deaeration means for shrinking the sheet inflated by the powder guide device.

A second means is a funnel-shaped hopper portion having a side wall which gradually decreases downward from an opening formed at an upper end portion, and an annular upper portion along a cylindrical inner peripheral surface of the hopper portion. An edge portion and an annular lower edge portion are airtightly fixed to the upper end portion of the hopper portion and the lower end portion of the hopper portion,
A flexible and substantially gas-impermeable first tubular sheet forming an annular non-sticking portion between the hopper section and the first tubular sheet attached to the surface of the first tubular sheet; A flexible second tubular sheet suspended from the opening of the hopper, which includes an attachment portion and a hanging portion extending substantially vertically from the lower end of the attachment portion, and the side wall. A gas pressure introducing means having a through hole for guiding a gas pressure to the annular non-fixed portion through the through hole to inflate the first cylindrical sheet into the hopper portion; and the gas pressure resistance introducing means. And a deaeration means for shrinking the sheet inflated by the powder guide device.

[0006]

Since the present invention is constructed as described above, the first cylindrical sheet provided along the inner surface of the hopper can be inflated inward or contracted in the opposite direction. The second tubular sheet suspended from the opening of the hopper inside the surface of the tubular sheet of No. 1 has the attachment portion provided on the surface of the first tubular sheet. , And the first tubular sheet greatly varies with the expansion and contraction of the sheet.

By providing the tubular portion extending in the vertical direction from the lower end of the hopper portion, it is possible to easily connect the lower end of the tubular portion to a bag or the like containing powder.

Needless to say, the second sheet portion can be accommodated in a container for accommodating powder at the lower end thereof without the cylinder portion.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In the figure, 10 is a main body made of a steel material forming an outer shell. The main body 10 has an opening 11a at the upper end, and the diameter of the conical sidewall 1 gradually decreases downward from the opening 11.
It is configured by connecting a funnel-shaped hopper portion 11 having 1b and a right cylindrical portion 12 extending vertically from the lower end of the hopper portion 11.

Bent flanges 11c and 11d are formed on the upper end and the lower end of the hopper 11, respectively. The hopper portion 11 has a first
The tubular flexible sheet 20 is provided. This first
The tubular flexible sheet 20 is formed in a funnel shape corresponding to the tapered shape of the side wall 11b, and has an annular upper edge portion 21 hermetically fixed to the flange 11c at the upper end portion and a flange at the lower end portion. 11 d and the lower edge portion 22 that is airtightly fixed to the hopper portion 11, and an annular non-fixed portion 50 is formed between the lower edge portion 22 and the hopper portion 11. That is, the first tubular flexible sheet 20
An airtight chamber can be formed by the non-fixed portion 50 between the side wall 11b and the side wall 11b.

The first tubular flexible sheet 20 is made by laminating a fluororesin film with a thickness of about 0.1 mm on one surface (inner surface) of a thin canvas made of synthetic fiber such as polyester. It is sewn in a funnel shape corresponding to the side wall 11 of the portion 11, and this fluororesin film makes it substantially impermeable so that gas does not leak, and this fluororesin film also adheres various powders in earnest. It's hard to do.

On the other hand, the side wall 11b of the hopper portion 11 is provided with a plurality of through holes 13, and each through hole 13 has an air source 32 or an air source 32 via a pipe line 30 and a solenoid valve 31 provided in the middle of the pipe line 30. It is connectable to a vacuum source 33, and by connecting to the air source 32, air pressure is introduced into the annular non-attachment portion 50 between the first tubular flexible sheet 20 and the side wall 11b. When the tubular flexible sheet 20 of No. 1 can be inflated inside the hopper portion 11, on the other hand, as shown in FIG. 2, the solenoid valve (switching valve) 31 is switched to switch the vacuum source 3
By connecting to No. 3, the introduced air can be degassed, and the inflated first tubular flexible sheet can be contracted. By repeating switching of the solenoid valve 31, the first tubular shape can be reduced. The flexible sheet 20 can be deformed / displaced by wavy.

A second tubular flexible member comprising an attached portion 41 attached on the surface of the first tubular flexible sheet 20 and a hanging portion 42 which hangs in a cylindrical shape from the lower end of the attached portion 41. The elastic sheet 40 is fixed to the flange 11c of the opening 11a of the hopper portion 11 together with the annular upper edge portion 21 of the first tubular flexible sheet 20, and is suspended downward.

The second tubular flexible sheet 40 is also the first
Similar to the cylindrical flexible sheet 20, the thin canvas (inner surface) made of synthetic fiber such as polyester is laminated with a fluororesin film to a thickness of about 0.1 mm.

The lower end of the hanging portion 42 of the second tubular flexible sheet 40 is formed so as to project from the lower end of the tubular portion 12 of the main body 10, and the powder introduced from above the hopper portion 11 is collected. It is devised so that it can be stored in a bag or the like arranged below the tubular portion 12 without leaking.

Thus, the second tubular flexible sheet 40
The second tubular flexible sheet 40 is provided by arranging the attached portion 41 of the second tubular sheet 41 on the surface of the first tubular flexible sheet 20.
Is largely deformed / displaced in a wavy shape based on the deformation / displacement of the first tubular flexible sheet 20.

As a result, when the weighed powder is loaded into the loading container 60 or the like from above the hopper portion 11, the powder slides down along the inner surface of the second tubular flexible sheet 40. The powder adhering to the inner surface of the second tubular flexible sheet 40 is also based on the deformation / displacement of the first tubular flexible sheet 20 and the second tubular flexible sheet 40. Is greatly deformed / displaced in a wavy shape, and the powder is swept away and the powder immediately
It can now be stored in a vinyl bag (not shown) provided below the.

In this embodiment, the tubular portion 12 is connected to the lower end of the hopper portion 11. However, even without the tubular portion 12, the charged powder is charged into the second tubular flexible sheet 40. Needless to say, it can be accommodated in a bag or the like (not shown) as much as possible without being attached to the.

In this embodiment, the hopper portion 11 is formed in a conical funnel shape, but it may be formed in a polygonal funnel shape such as a quadrangular pyramid.

Further, in this embodiment, the second tubular flexible sheet 40 has the flange 11c at the upper end of the hopper portion 11.
Although it is fixed to and is suspended downward, it may be suspended by being attached to an independent stand or the like provided near the opening 11a of the hopper portion 11.

The first tubular flexible sheet 20 is
The present invention is not limited to this embodiment, and it is sufficient if the gas pressure introducing means and the degassing means are provided with the function of expanding and contracting.

The second tubular flexible sheet 40 is not limited to this embodiment either, and can be deformed / displaced as the first tubular flexible sheet is deformed / displaced. It suffices to be able to prevent the powder that is substantially charged from adhering to the inner surface of the sheet 40.

In addition, the present invention can be constructed by connecting the gas pressure introducing means and the deaeration means to a reciprocating cylinder connected to a pipe connected to the through hole of the hopper. Of course, it can be implemented in many forms and modes.

[0024]

EFFECTS OF THE INVENTION According to the present invention, the deposited powder can be prevented from adhering and can be easily supplied to a bag or the like provided below.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state in which a first cylindrical flexible sheet of a powder guiding device according to an embodiment of the present invention is inflated.

FIG. 2 is a cross-sectional view showing a state in which a first cylindrical flexible sheet of the powder guiding device of FIG. 1 is contracted.

[Explanation of reference numerals] 10: Main body 11: Hopper part 12: Cylindrical part 20: First cylindrical seat 21: Annular upper edge part 22: Annular lower edge part 30: Pipe line 31: Switching valve 32: Air Source 33: Vacuum source 40: Second cylindrical sheet 41: Attached portion 42: Hanging portion 50: Current non-fixed portion

Claims (2)

[Claims] 1. A funnel-shaped hopper portion having a side wall that gradually decreases downward from an opening formed at an upper end portion,
A main body composed of a tubular portion extending substantially vertically from the lower end of the hopper portion, and an annular upper edge portion and an annular lower edge portion along the tubular inner peripheral surface of the hopper portion, respectively. A flexible and substantially gas-impermeable first tubular sheet that is airtightly fixed to the upper end portion and the lower end portion of the hopper portion and forms an annular non-fixed portion with the hopper portion. And an attachment portion attached on the surface of the first tubular sheet,
A flexible second tubular sheet hung from the opening of the hopper, which includes a hanging portion extending substantially vertically from the lower end of the attached portion, and a through hole in the side wall. Then, the gas pressure introducing means for guiding the gas pressure to the annular non-sticking portion through the through hole to inflate the first cylindrical sheet inside the hopper portion, and the gas pressure introducing means for inflating the gas pressure introducing means. A powder guide device, comprising: deaeration means for shrinking the sheet. 2. A funnel-shaped hopper portion having a side wall that gradually decreases downward from an opening formed at an upper end portion, and an annular upper edge portion and an annular portion along a cylindrical inner peripheral surface of the hopper portion. The lower edge portions of the hopper are airtightly fixed to the upper end of the hopper and the lower end of the hopper, respectively, and form a ring-shaped non-fixed portion with the hopper. A permeable first tubular sheet, and an attachment portion attached to the surface of the first tubular sheet,
A flexible second tubular sheet hung from the opening of the hopper, which includes a hanging portion extending substantially vertically from the lower end of the attached portion, and a through hole in the side wall. Then, the gas pressure introducing means for guiding the gas pressure to the annular non-sticking portion through the through hole to inflate the first cylindrical sheet inside the hopper portion, and the gas pressure introducing means for inflating the gas pressure introducing means. A powder guide device, comprising: deaeration means for shrinking the sheet.