JP4619612B2 - Powder measuring device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for measuring powder particles.
[0002]
OBJECT OF THE INVENTION
It is an object of the present invention to provide a granular material measuring device that can be incorporated into a currently widely used granular material transport system and can be effectively used as a weighing device that also serves as a transport pipe. is there.
[0003]
[Means for Solving the Problems]
In order to achieve the above object, the present invention employs the following means.
The invention of claim 1 has a measuring container having an inlet at the upper end and an on-off valve that opens and closes the inlet of the measuring container, and the measuring container is capable of passing a granular material together with a gas flow in the lower part. It has the 1st opening and 2nd opening of upward shape.
The invention of claim 2 has a measuring container having an inlet at the upper end and an on-off valve for opening and closing the inlet of the measuring container, and the measuring container is capable of passing a granular material together with a gas flow in the lower part. It has a first opening with an upward shape, and has a second opening with an upward shape through which the granular material can pass along with the flow of gas .
[0004]
【The invention's effect】
The present invention has the following effects by the configuration as described above.
According to the first aspect of the present invention, by generating a gas flow from the second opening provided in the lower part of the measuring container toward the first opening provided in the lower part of the measuring container, the powder in the measuring container is generated from the first opening. The granules can be discharged together with the gas flow . On the other hand, by generating a gas flow from the first opening to the second opening, the particles in the measuring container are discharged together with the gas flow from the second opening. I can do it. Furthermore, by connecting the powder body outlet of the weighing container of another weighing device to the second opening and generating a gas flow from the second opening toward the first opening, the powder in the weighing container of the other weighing device The particles can be discharged from the second opening through the first opening together with the gas flow . Therefore, since the measuring container itself can be used as a part of the particle transport pipe, it is incorporated into the currently widely used powder transport system and effectively used as a metering device that also serves as a transport pipe. I can do it.
According to invention of Claim 2, the gas flow which goes to the 1st opening provided in the lower part of the measurement container from the 2nd opening provided in the upper part of the measurement container, or conversely the gas which goes to the 2nd opening from the 1st opening In the same manner as in the first aspect of the invention, the granular material in the measuring container can be discharged together with the gas flow from the first opening or the second opening. Since it can be used as a part of a particle transport pipe, it can be incorporated into a currently widely used powder transport system and effectively used as a metering device also serving as a transport pipe.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
In the following, two embodiments of the invention will be described.
In these descriptions, the same members are denoted by the same reference numerals.
[0006]
[First Embodiment] (see FIG. 1)
A guide cylinder 3 perpendicular to the outlet 2 of the storage hopper 1 for storing powder particles is connected, and a weighing device 31 is attached to the lower end of the guide cylinder 3.
[0007]
The measuring device 31 has a measuring container 32 having an inlet 33 at the upper end, and an opening / closing valve 36 connected to the lower end of the guide tube 3 for opening and closing the inlet 33 of the measuring container 32. The measuring container 32 has a variable internal capacity according to the configuration described in detail below, and has a first opening 49 in the lower part and a second opening 50 in the required part, in the present embodiment, in the lower part.
[0008]
The weighing container 32 has an upper cylinder 21 having an inlet 33 at the upper end with the axis oriented in the vertical direction, and a lower member 22 provided on the upper cylinder 21 so that the vertical position can be adjusted.
[0009]
The lower member 22 has a cylindrical portion 22a whose axis is oriented in the vertical direction, and a hollow, bottomed truncated cone portion 22b provided at the lower portion of the cylindrical portion 22a. . Two through holes 46 are formed in the side wall of the truncated cone part 22b, an upward short cylinder 47 is connected to the through holes 46, an upper end opening of one short cylinder 47 is a first opening 49, and the other short hole 47 is connected. The upper end opening of the cylinder 47 is a second opening 50.
[0010]
A screw hole 23 having a horizontal axis is formed in the upper portion of the cylindrical portion 22a of the lower member 22. A screw 24 is screwed into the screw hole 23, and the tip of the screw 24 is pressed against the upper cylinder 21. The lower member 22 is fixed to the upper cylinder 21. On the other hand, the lower member 22 can move up and down by loosening the screw 24. An annular groove is formed at a predetermined interval in the height direction on the outer peripheral surface of the upper cylinder 21 so that the tip of the screw 24 is fitted into the annular groove so that the lower member 22 is fixed more firmly. It may be.
[0011]
In the present embodiment, the granular material in the measuring container 32 goes out from the first opening 49, and the granular material sent from the second opening 50 from gas or another measuring device (not shown). Other weighing devices, transport pipes, gas pumps (not shown), etc. are connected so that the body enters.
[0012]
The opening valve 36 has a casing 40 having an inlet 41 at the top and an outlet 42 overlapping the inlet 41 when viewed from the bottom, and the casing 40 moves horizontally in a direction perpendicular to the paper surface of FIG. And a slide plate 44 having a through hole 45 which is made freely.
[0013]
[Operation of First Embodiment]
Next, the first operation of the first embodiment will be described.
First, the height position of the lower member 22 with respect to the upper cylinder 21 is adjusted to set the internal capacity of the measuring container 32 to a set value. In addition, by devising the shape of the truncated cone portion 22b (angle α in FIG. 1) in consideration of the angle of repose of the granular material, a part of the granular material that has entered the measuring container 32 is placed in the short tube 47. Since the amount of protrusion can be determined so that it does not protrude or even if it protrudes, the capacity of the measuring container 32 may be determined in consideration of these situations.
Thereafter, when the storage hopper 1 is filled with the powder and then the opening / closing valve 36 is opened, the powder flows into the measuring container 32 and the measuring container 32 is filled with the powder.
Thereafter, the on-off valve 36 is closed.
Thereafter, if a gas flow from the second opening 50 toward the first opening 49 is generated, the granular material in the measuring container 32 is discharged from the first opening 49 and sent to a predetermined place.
Thereafter, the on-off valve 36 is opened again.
Thereafter, the same operation is performed.
[0014]
Next, the second operation of the first embodiment will be described.
Since the granular material outlet of the measuring container of another measuring device is connected to the second opening 50 to construct the granular material transport system, the discharge valve of the granular material in the measuring container 32 is completed, and the on-off valve If 36 is kept closed and the powder container is filled with the powder and then the gas flow from the second opening 50 toward the first opening 49 is generated, another measuring device is obtained. The granular material in the measuring container can be transported to a predetermined place through the illustrated measuring container 32. In short, the measuring container 32 can be used as a part of the transport pipe.
[0015]
[Second Embodiment] (see FIG. 2)
The lower member 22 includes a cylindrical portion 22a having an axial center directed in the vertical direction, and a bottomed inclined cylindrical portion 22c connected to the lower end of the cylindrical portion 22a and having an open upper portion with the axial center inclined. ing.
[0016]
A through hole 46 is formed in the upper side wall of the cylindrical portion 22a, and a short cylinder 52 curved upward is connected to the through hole 46. An upper end opening of the short cylinder 52 is a second opening 50. Further, a through hole 46 is formed in the side peripheral wall of the inclined cylinder portion 22 c, an upward short cylinder 47 is connected to the through hole 46, and an upper end opening of the short cylinder 47 is a first opening 49.
[0017]
By devising the inclination angle (angle α in FIG. 2) of the inclined cylindrical portion 22c in consideration of the angle of repose of the granular material, a part of the granular material that has entered the measuring container 32 enters the short cylinder 47 The amount of protrusion can be determined substantially so as not to protrude or even if it protrudes. In addition, a part of the powder particles entering the measuring container 32 protrudes into the short cylinder 52, but the amount of protrusion is determined by the type of the powder particles. Under such circumstances, the measuring container 32 functions as a measuring container.
[0018]
In the present embodiment, the granular material in the measuring container 32 exits from the first opening 49, and the granular material sent from the second opening 50 from gas or another measuring device (not shown). Other weighing devices, transport pipes, gas pumps (not shown), etc. are connected so that the body enters.
[0019]
The operation of the second embodiment is the same as the operation of the first embodiment.
[0020]
[Modifications]
A description will be given below of modifications and the like.
(1) The granular material includes powder, granular material, fine flakes, short fiber pieces, sliver and the like.
(2) The method of using the weighing device 31 is arbitrary.
(3) The structure of the measuring container is arbitrary as long as the internal capacity is variable.
(4) In the second embodiment, in the case of a granular material having a large apparent density, if the granular material is discharged from the lower first opening 49, the discharging of the granular material can be performed smoothly. I can do it. On the other hand, in the case of a granular material having a small apparent density, the granular material may be discharged from the second opening 50. Even in the case of a granular material having a large apparent density, the granular material cannot be discharged from the second opening 50 by increasing the gas flow rate.
(5) A downward powder outlet may be formed in the lower portion of the measuring container 32, and the powder outlet may be closed by a closing member so as to be freely opened and closed. By doing this, by opening the powder outlet, it is possible to discharge the powder from the powder outlet, so you can easily measure the weight of the powder measured in the measuring container. It can be confirmed.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a main part showing a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of a main part showing a second embodiment of the present invention.
[Explanation of symbols]
21 Upper tube 22 Lower member 22a Tube portion 22b Frustum portion 31 Weighing device 32 Weighing container 33 Inlet 49 First opening 50 Second opening

Claims (2)

A measuring container having an inlet at an upper end thereof, and an on-off valve for opening and closing the inlet of the measuring container, the measuring container having a first opening having an upward shape in which a granular material can pass along with a gas flow at a lower portion; A granular material measuring device having a second opening. A measuring container having an inlet at the upper end and an open / close valve for opening and closing the inlet of the measuring container. The measuring container has a first opening having an upward shape through which a granular material can pass along with a gas flow. A measuring apparatus for a granular material, which has a second opening having an upward shape in which the granular material can pass along with a gas flow .

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