JP2840187B2 - Quantitative powder sampling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for quantitatively collecting a granular material, and more particularly to an apparatus for quantitatively collecting a granular material which can be continuously collected in a fixed amount.

[0002]

BACKGROUND OF THE INVENTION Flour,
In the technical field dealing with powdered polymers, toners and other powders, it is necessary to collect a predetermined amount of powder as a sample from the process tube at regular intervals or continuously and analyze the collected sample. It is important for process control and quality control.

[0003] Conventionally, a method of collecting a sample of a granular material from a process tube includes a method of taking out the granular material collected in the process tube by using a screw, and a method of collecting the granular material in a cup in the process tube. There is a method in which the cup filled with the powder is moved out of the tube to take the powder out of the process tube.

[0004] The powder and granules conveyed outside the process tube are conveyed by air to an analysis means such as a particle size analyzer using an ejector, or are collected in a collection container.

[0005] When a sample is continuously transported outside the process tube, the method using the screw is widely used. In the conveying means using the screw, the amount of the granular material collected per fixed time can be adjusted to some extent by controlling the hole diameter and the rotation speed of the screw.

[0006] However, when the concentration of the granular material flowing in the process tube changes, it is not possible to maintain a constant amount of the granular material even if the rotation speed of the screw is maintained at a constant speed. Such a variation in the amount of collected particulates becomes a problem particularly when the properties of the particulates flowing in the process tube are continuously analyzed. That is, when the collected powders and granules are transported to the analyzer as they are, and the transported powders and granules are used as a sample for analysis as it is, the amount of the sample varies due to a variation in the amount of the collected powder. For this reason, a measurement error occurs, and stable and accurate measurement cannot be performed. Furthermore, when the concentration of the powder and granular materials in the process tube fluctuates greatly, the amount of the sample to be analyzed also fluctuates greatly, and the analysis itself may not be possible due to a deviation from the measurable range of the analyzer. .

Further, in order to collect a representative sample of the granular material flowing through the process tube, a sample of the granular material taken out of the process tube is stored in a shrinker, and the inside of the shrinker is sufficiently filled. After that, it is necessary to separate a predetermined amount of the powder and granules from the condensing device.

[0008] However, the above-mentioned decompressor has the drawback that the structure is complicated and the cost is high. further,
This invention has a problem in that the portion removed during the process of shrinking of the granules conveyed into the shrinker is discarded, and a processing means for that is necessary. It was done to solve it. That is, an object of the present invention is to provide a granular material quantitative collection device capable of collecting a granular material with good quantitativeness and separability.

[0009]

According to one aspect of the present invention for solving the above-mentioned problems, the present invention relates to a method for collecting powders and granules flowing through a process tube without sucking the powders and storing the collected powders and granules. It has a means for collecting powder and granules that can be dropped immediately outside the process tube , and a rotatable cylindrical drum.
The rotating shaft is arranged horizontally, and the granules dropped by the granule collecting means are received on the peripheral surface of the cylindrical drum.
Transport means for transporting the powder and granules after firing, and the transport means
A transport amount regulating unit that regulates a transport amount of the aggregate of the powder and granules transported by the transport unit in cooperation with the stack of the powder and granular material that is transported after being regulated by the transport amount regulating unit. A powder / particle quantitative sampling apparatus characterized by comprising a powder / particle extracting means for sampling, and another invention for solving the above-described problem is the powder / particle collecting means according to claim 1. Powder, comprising: a conveying unit, a conveying amount regulating unit, a granular material removing unit, and a granular material returning unit for returning a granular material not received by the conveying unit into the process tube. It is a particle quantitative sampling device.

[0010]

In the apparatus for quantitatively collecting particulates, the particulates conveyed in the process pipe are collected from the process pipe by the particulate collecting means. The collected powder is immediately dropped on the peripheral surface of the cylindrical drum in the transport means outside the process tube without being stored by the powder and particle collecting means.
Of the cylindrical drum in the conveying means by the granular material collecting means
Peripheral surface fallen granular material is conveyed, the conveyance amount of the powdery or granular material is restricted to a predetermined amount by said conveying means and <br/> conveyance amount regulating means. The granular material regulated to a predetermined amount is collected as a sample by the granular material removing means.

According to the apparatus for quantitatively measuring the amount of a granular material, a fixed amount of a granular material sample is always collected. Moreover, unlike taking a sample from the process tube by conventional manner such as screw, regulate the transport of granular material in the conveying amount regulating means and the conveying means, the stack of regulated granular material Since a predetermined amount of the granular material as a sample is collected by the granular material taking-out means, a reduction operation can be performed.

According to another aspect of the present invention, there is provided a powder and granule quantifying apparatus which, among the powder and granules dropped toward the conveying means by the powder and grain collecting means, does not receive the powder and granules. The body is returned into the process tube by the particulate return means.

Therefore, according to the apparatus for quantitatively measuring the amount of granular material, not only a constant amount of the granular material sample is collected but also the granular material collected by the granular material collecting means is not wasted.

[0014]

【Example】

(Embodiment) An apparatus for quantitatively collecting powder and granules according to an embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, the apparatus for quantitatively collecting powder and granules is provided on a peripheral surface of a process pipe P which is a vertical pipe. That is, an opening having the flange 2 at the peripheral end is provided on the outer peripheral surface of the process pipe P. This flange 2 and the flange 4 provided at the end of the one end opening of the outer case 3 in the powder and particulate matter collecting apparatus are overlapped and closely connected to each other, so that the process pipe P is formed on the peripheral surface of the process pipe P. The device is mounted in a direction perpendicular to the axis of P.

At the lower end of the opening of the process tube and at the lower end of the opening of the outer case of the present apparatus, a slope 5 is formed so that they form one slope.
And a slope 6 are formed.

The one end opening on the process tube P side of the outer case 3 in this apparatus for quantitatively collecting particulates covers most of the one end opening, and the lower end of the one end opening of the outer case 3 A shielding plate 7 having a lower edge having a predetermined interval is provided. Further, in the inside of the outer case 3 and in a direction opposite to the process pipe P from the shielding plate 7, a lower end side parallel to the shielding plate 7 and connected to an upper end side of the slope 6 is connected. Partition wall 8 is provided.

The partition wall 8 is integrated with the slope 6 so that the inside of the outer case 3 is a space A on the process pipe P side.
And a space B opposite to the process pipe P.

Each of the shielding plate 7 and the partition 8 is formed with a circular through-hole sharing an axis, and a bearing 9 is provided in each of the through-holes. The axis is orthogonal to the shielding plate 7 and the partition 8.

A cylindrical screw feeder main body 10 which penetrates both through holes 9 and is supported by the two bearings is mounted. The tip of the screw feeder body 10 is located inside the process tube P.

On the upper surface of the end portion of the screw feeder body 10 located in the process pipe P, a powder material collecting port 11 for taking in the powder material flowing through the process pipe P is provided. At the location located in the space A, the process pipe P is opened downward.
A drop port 12 is provided for dropping the granular material collected in the inside and moved in the screw feeder main body into the space A.

The opening of the granular material sampling port 11 is
The opening 12 is opened in a plane perpendicular to the flow direction of the granular material, and the drop port 12 is opened in a direction in which the granular material is smoothly dropped. Therefore, when the process pipe P stands upright,
Because the granules fall in the vertical direction,
The opening of the granular material collection port 11 opens right above, and the drop port 12 opens, for example, directly below.
Further, when the process pipe P is inclined, the opening of the granular material sampling port 11 is opened in a direction orthogonal to the flowing direction of the granular material flowing in the inclined process pipe P,
The drop opening 12 opens, for example, directly below.

The movement of the granular material in the screw feeder body 10 is performed by rotating a screw 13 disposed in the screw feeder body 10. The screw 13 is driven by rotating a screw shaft, which is located in the space B and protrudes from a through hole provided at an end of the screw feeder body 10, by a screw driving motor M.

The screw feeder body 10
Is connected to a rotary actuator R that rotationally drives the screw feeder body itself. As shown in FIG. 2 and FIG. 3, a concave groove 20 facing the powder falling direction is formed on the outer peripheral surface below the drop port 12, and a columnar shape that can rotate around an axis. A drum 14 for transporting the granular material is provided.

The rotation of the powder transporting drum 14 is performed by driving a motor M for driving the powder transporting drum, one end of which is inserted and fixed in a through hole provided in the center thereof and the other end is disposed in the space B. This is performed by driving the connected rotating shaft 15.

The partition 8 has a through hole for the rotating shaft 15 formed therein.
As shown in FIG. 4, a rubbing plate having a rubbing portion 16 that comes into contact with the outer peripheral surface of the powder / particle transport drum 14 at a position slightly shifted in the rotational direction from the top of the powder / particle transport drum 14. 17 is mounted.

The distal end of a suction pipe 18 is disposed at a position on the outer peripheral surface of the powder transporting drum 14 that is further deviated in the rotational direction from a position where the abrasion portion 16 contacts. A suction port 19 that opens in a direction toward the rotation direction is provided at a distal end portion of the suction pipe 18.
The suction port 19 is disposed inside a concave groove 20 formed on the outer peripheral surface.

The distal end of the suction pipe 18 is provided with the concave groove 2.
0, for example, a gutter structure having a bottom surface and both side surfaces in contact with the bottom surface and both side surfaces of the concave groove 20, and a suction pipe 18.
The portion other than the above-mentioned tip has a tubular structure.

The suction pipe 18 penetrates the partition 8 as shown in FIG.
And an ejector 23 to which a discharge pipe 22 is connected.

The air supply pipe 21 and the discharge pipe 22 are provided with a control valve 24 and a control valve 25, respectively. For example, a sample receiving container may be arranged at the end of the powder / particle transport destination of the discharge pipe 22, or a sample preparation container of a particle size analyzer may be used.

Reference numeral 26 denotes a vibration device which vibrates the slope 6 to smoothly roll or slide down the powder on the slope.

In the above embodiment, the powder and granule collecting means of the present invention includes a screw feeder body 10 having a built-in screw 13 and having a powder collecting port 11 and a drop port 12, and a screw for rotating the screw 13. It has a driving motor M and a rotary actuator R for driving the screw feeder body 10 to rotate. The transport means in the present invention is:
Rotatable powder transport drum 14 having concave groove 20
It is comprised including. The transporting amount regulating means in the present invention is provided with a concave groove 20 formed on the peripheral surface of the powdery material transporting drum 14 and a rubbing plate 17 having a rubbing portion 16. The granular material taking-out means in the present invention is provided with a suction pipe 18 having a suction port 19 at the tip, an air supply pipe 21, a discharge pipe 22, an ejector 23, and a control valve 24. The powder and particle returning means according to the present invention includes a slope 5, a slope 6, a shielding plate 7, and the partition wall 8.

Next, the operation of the apparatus for collecting powder and granules of this embodiment will be described.

As an initial state, it is assumed that a predetermined powdery material constantly flows and falls in the process tube P, but no sample is collected. Process pipe P
The granule collecting port 11 in the inside stands by in a state of opening downward so as not to collect the granules.

When starting the collection, first, the screw feeder main body 10 drives the rotary actuator R connected to the end, the screw feeder main body 10 makes a half turn around its axis, and The sampling port 11 is turned upward.

At the same time, the screw driving motor M
Then, the drum driving motor M for conveying the granular material is activated.
As a result, the granular material collection port 11 faces upward, and thereby the collection of the granular material is started. The granular material collected in the granular material collecting port 11 is rotated by the screw 1
3 is moved toward the drop port 12 by the rotation action. And when it reaches the drop port 12, the drop port 1
2 and fall into the space A outside the process P tube.

The granular material extruded from the falling port 12 is, as shown in FIG.
4 falls on the outer peripheral surface.

At this time, even if the amount of the granular material dropped on the outer peripheral surface is filled in the concave groove 14 provided on the outer peripheral surface at the point where the powder falls, a sufficient amount, that is, FIG. The rotation speed of the screw and the rotation speed of the drum for transporting the granular material 14 are adjusted so that a heaping state F as shown in FIG.

The powder particles piled up on the outer peripheral surface in the heaped state F are conveyed in the direction of rotation together with the rotation of the drum 14 for conveying powder particles. Then, the recessed groove 20 is formed by the abrasion portion 16 of the abrasion plate 17 which comes into contact with the outer peripheral surface.
The part that piled up over the height of the outer peripheral surface on top was frayed,
Only the granular material existing inside the concave groove 20 is transported to a position beyond the scraping plate 17.

FIG. 2 shows a state in which the particles are piled up in the heaping state F, and FIG. 3 shows a state after the particles are piled off by the abrasion section 16. 2 and 3
5 is a sectional view taken along line AA and a sectional view taken along line BB in FIG. 4, respectively.

The whole amount of the powder and granules transported to the front of the scraping plate 17 passes from the suction port 19 to the suction pipe 1.
It is inhaled into 8. This suction is performed by the ejector 23 connected to one end of the suction pipe 18 on the opposite side. That is, by driving the ejector 23 with the control valve 24 in the “open” state and sending high-speed air from the air supply pipe 21, the powder or granular material in the concave groove 20 is sucked into the suction port 19, The sucked powder is guided through the discharge pipe 22 together with air. The entrained and discharged powder is transported to, for example, a sample receiving container or a sample preparation container of, for example, a particle size analyzer.

A portion of the powder material extruded from the drop port 12 of the screw feeder body 10 that has not fallen on the outer peripheral surface of the powder material transport drum 14 is described below.
After dropping, the portion cut off by the scraping plate 17 falls further and falls on the slope 6.

The whole amount of the dropped particles is returned to the process pipe P by sliding down on the slope formed by the slope 6 and the slope 5. Therefore,
Since only the amount necessary for the analysis or the like can be actually collected, there is no waste.

When the collection is interrupted, the suction from the suction pipe 18 may be stopped.
The entire amount of the powder particles falling outside returns to the process pipe P.

By maintaining the driving of the screw 13 and the drum 14 for transporting the granular material even during the interruption, a stable quantitative sampling can be performed instantaneously after the sampling is restarted.

If the control valve 25 provided on the discharge pipe 22 is closed without stopping the air supply from the air supply pipe 21 when the suction is stopped, the suction pipe 1
Air can be jetted from the suction port 19 in FIG. Therefore, it is possible to prevent the granular material from sticking to the concave groove 20 during the suspension of the sampling. Also,
Taking such measures during interruption is particularly useful if the sample is highly adsorbent.

When sampling is not performed for a long period of time, the screw feeder body 10 is rotated half a turn by the rotary actuator R so that the sampling port 11 is turned downward and the power of the apparatus is turned off. Therefore, it is possible to prevent the powder or granules from sticking or accumulating in the sampling port 11.

(Modification) The present invention is not limited to the above-described embodiment, and the design can be appropriately changed within the scope of the present invention.

The granular material collecting means of the present invention has various specific configurations as long as it has a function of collecting the granular material flowing through the process tube and transferring the collected granular material to the conveying means outside the process tube. Can be adopted. However, the powder / grain collection means includes powder / granule receiving means for receiving the powder / granules flowing through the process tube, and powder / granules for transferring the powder / granules received by the powder / particle receiving means to the outside of the process tube It can be configured to include a body transferring means and a granular material moving means for moving the granular material transferred out of the process tube to the transporting means.

In the above embodiment, the structure having the screw feeder main body 10 and the granular material collecting port 11 in the screw feeder main body corresponds to the granular material receiving means, and the screw feeder main body 10 and the inside thereof can be rotated. The configuration having the screw 13 corresponds to the granular material transferring means, and the configuration having the screw feeder main body 10 and the drop port 12 provided therein corresponds to the granular material moving means.

As another structure of the granular material collecting means in the present invention, for example, a belt conveyor system as shown in FIG. 5 may be employed.

The powder and granule collecting means shown in FIG.
And another rotating means, for example, a rotating gear 51, which is disposed between the shielding plate 7 and the partition 8 inside the outer case 3 provided outside the process pipe P, and the two rotating gears 5.
0, 51, and a belt 5 which is provided endlessly through an opening window 52 provided in the shielding plate 7.
5, the belt 53 is rotated in the direction of the arrow in FIG. 5 by the rotational driving of the rotary gears 50 and 51, and the powder and granules accumulated on the belt 53 are moved between the shielding plate 7 and the partition wall 8. It is also possible to use a configuration that is made to fall in space.

In the granular material collecting means shown in FIG. 5, the granular material receiving means is constituted by a part of the belt 53 disposed in the process pipe P, and the granular material received by the granular material receiving means is provided. The granular material transferring means for transferring the powder to the outside of the process pipe P is constituted by a belt 53 which moves on an endless track by both rotating gears 50 and 51, and transfers the powder and granular material transferred to the outside of the process pipe P to the transport means. The granular material moving means to be used is a shielding plate 7.
And a part of the belt 53 and the rotating gears 50 and 51 located between the first and second partition walls 8.

As another configuration of the granular material collecting means in the present invention, for example, a cup collecting method as shown in FIG. 6 may be adopted.

The granular material collecting means shown in FIG. 6 includes a front end located inside the process tube P and a rear end located outside the process tube P through an opening 60 provided in the tube wall of the process tube P. Support rod body 61 having a
(1) a first lid member 62 attached to the distal end portion, and the rotary support rod member 61 closing the opening 60 when the distal end portion of the rotary support rod member 61 is positioned in the process pipe P. A second cover member 63 provided at a central portion of the first support member 61; a first cover member 62 of the rotation support rod 61;
A cup 64 provided at an intermediate portion of the lid member 63, a shaft rotation driving unit (not shown) for rotating the shaft of the rotation support rod 61, and the second lid member 63 covers the opening 60. The rotation support rod 61 is moved forward so that the first lid member 62 covers the opening 60 so as to move the rotation support rod 61 forward and backward (not shown). It is composed.

In this powder and granular material collecting means, the powder and granular material receiving means is provided with the cup 6 mounted on the rotation support rod 61.
The powder / particle transfer means for transferring the powder / particles received by the powder / particle receiver to the outside of the process tube P includes a cup 64 mounted on the rotation support rod 61 and a rotation support rod. 61 and the rotary support rod forward / backward drive means, and the granular material moving means for moving the granular material transferred to the outside of the process pipe P to the transfer means comprises the rotary support rod 61 and the rotation thereof. It comprises a cup 64 mounted on the support rod 61 and the shaft rotation driving means.

The operation of the powdery and granular material collecting means shown in FIG. 6 is as follows. In other words, when the cup 64 mounted on the rotation support rod 61 is oriented upward and the cup 64 is arranged inside the process tube P, the powder particles flowing through the process tube P are accumulated in the cup 64. You. At this time, the second
Since the lid member 63 closes the opening 60, the powder flowing through the process tube 60 does not scatter outside the process tube P. When the granules are accumulated in the cup 64, the rotation support rod body forward / reverse driving means is driven to drive the rotation support rod body 61.
When the first lid member 62 closes the opening 60, the rotation support rod 61 stops moving backward. Next, by driving the shaft rotation drive means, the rotation support rod 61 is driven.
Is rotated to rotate the cup 64, which has been facing upward, downward. When the cup 64 is directed downward, the powder or granular material in the cup 64 falls downward. Then, the conveying means disposed below receives the falling powders.

As another specific example of the granular material collecting means of the present invention, a method using a cup rod as shown in FIG. 7 may be employed.

The granular material collecting means shown in FIG. 7 has a tip located in the process tube P, a recess 70 near the tip, and an opening 7 formed in the peripheral surface of the process tube P.
1 and a cylindrical cup bar 72 having a rear end positioned outside of the process tube P through which the cup bar 72 is rotatably supported at the opening 71. Bearing mechanism 73 for isolating the cup bar 72, a second bearing mechanism 74 for rotatably supporting the cup bar 72 outside the process tube P, and a forward / reverse drive mechanism 75 for moving the cup bar 72 back and forth, for example, an air cylinder And a shaft rotating mechanism (not shown) for rotating the cup rod 72 about its axis.

In the granular material collecting means shown in FIG. 7, the granular material receiving means includes a concave portion 7 formed in the cup rod 72.
0, and the powder and particle transferring means for transferring the powder and granular material received by the powder and particle receiving means to the outside of the process pipe P includes a cup rod 72, a concave portion 70 provided therein, and a forward / reverse drive mechanism. 75, and the powder / particle moving means for moving the powder / particles transferred to the outside of the process tube P to the transport means includes the cup rod 72, the recess 70, and the shaft rotating mechanism. Is done.

The operation of the granular material collecting means shown in FIG. 7 is as follows. That is, first, the cup rod 72 is moved forward by driving the forward / reverse drive mechanism 75 so that the recess 7
0 is located in the process tube P, especially at its center.
When the recess 70 is disposed in the process tube P, the powder flowing and falling in the process tube P accumulates in the recess 70 facing upward. Next, the forward / backward drive mechanism is driven to replace the cup bar 72, and the cup bar 72 is pulled out of the process tube P until the recess 70 is positioned outside the process tube P. After the forward / backward drive mechanism is stopped, the shaft rotating mechanism is driven to turn the upwardly-facing recess 70 downward. The powder falls from the concave portion 70 facing downward.

As another specific example of the granular material collecting means in the present invention, a pipe distribution system as shown in FIG. 8 may be employed.

The granular material collecting means shown in FIG. 8 includes an upward opening 80 opening upward in the process pipe P,
Pipe 81 obliquely penetrating through, shielding plate 7 and partition 8
And a downward opening 82 that opens downward in a space between the two. The shielding plate 7 and the partition 8 have the same structure as in the embodiment shown in FIG. Therefore, the slope 6 extending from the lower end of the shielding plate 7 and the lower end of the partition 8 and the slope 5 following the slope 6
And an opening space is formed therebetween.

In this granular material collecting means, the granular material receiving means is constituted by the upward opening 80 in the oblique pipe 81, and the granular material received by the granular material receiving means is taken out of the process pipe P. The powder / particle transfer means for transferring is constituted by the oblique pipe 81, and the powder / particle transfer means for transferring the powder transferred to the outside of the process pipe P to the transport means includes a downward opening 82 in the oblique pipe 81. It consists of.

In the powder / granule collecting means shown in FIG. 8, since the upward opening 81 of the oblique pipe 80 is open in the process pipe P, a part of Is taken into the oblique tube 81 from the upward opening 80, and the taken-in particulates fall down in the oblique tube 81, and from the downward opening 82, the space between the shielding plate 7 and the partition 8. Fall into. The powdery material falling from the downward opening 82 is received by the transporting means disposed immediately below the downward opening 82. The particles not received by the conveying means are returned to the process pipe P through the opening space.

As the conveying means in the present invention, the powdery material which is collected by the powdery material collecting means in the process tube and falls outside the process tube is formed rotatably.
The structure is not particularly limited as long as it has a function of receiving on the peripheral surface of the cylindrical drum arranged with the rotation axis horizontal and cooperating with a conveyance amount regulating means described later. . As the transfer means, outside the structure of the embodiment shown in FIG. 1, it can also be employed as cylindrical drum that is not formed of the concave-shaped groove. In the transport means
The cylindrical drum is formed so as to be rotatable, and furthermore, is disposed with its rotation axis being horizontal, and the cylindrical drum and the cylindrical drum are arranged so that the powder falling from the powder collecting means falls on the peripheral surface of the cylindrical drum. The positional relationship with the granular material collecting means is adjusted .

The transport amount regulating means in the present invention is not particularly limited in terms of its structure as long as the amount of the aggregate of powder and granules transported by the transport means can be regulated in cooperation with the transport means. And various structures can be considered.

As a specific example of the transport amount regulating means in the present invention, as shown in FIGS. 9 and 10, it has a rotating shaft 90 which is horizontally arranged and is rotatable, and has a groove on the peripheral surface. Cylindrical drum 91 without cylindrical drum 91
A powder particle having a lower end surface slidingly in contact with the peripheral surface of the cylindrical drum 91 at a position below the highest position of the cylindrical drum 91 and a cutout recess 93 in which an opening 92 is formed by the peripheral surface of the cylindrical drum 91 The amount regulating member 94 can be exemplified. Note that FIG.
In FIG. 10, reference numeral 95 denotes the notched concave portion 93 of the granular material conveyed on the peripheral surface of the cylindrical drum 91.
This is a powder / particle overflow prevention plate that regulates so that a surplus that does not pass through the powder / particle quantity regulating member 94 does not cross.

The granular material amount regulating member 94 falls on the peripheral surface of the cylindrical drum 91 due to the opening area of the notch recess 93, and rotates by rotation of the cylindrical drum 91.
The amount by which the granular material conveyed toward 3 passes through the notch recess 93 is regulated. Therefore, the amount of the conveyed granular material is regulated to a predetermined amount by the granular material amount regulating member 94.

[0069]

[0070] The shape of the notch recesses as shown in FIGS. 9 and 10 walking on the shape of the cutout recess before Symbol powder granules amount regulating member may be a square, also semicircular, may be a triangular shape Is optional.

There is no particular limitation on the granular material taking-out means in the present invention, as long as a predetermined amount of the granular material after being regulated by the carrying amount regulating means can be taken out from the carrying means.

For example, as shown in FIG. 9, as another specific example of the granular material take-out means, a collection pipe having a take-out pipe 100 and a transfer pipe 101 can be used.

The take-out tube 100 is connected to the cylindrical drum 9
1 has a tip rake portion 102 that is in sliding contact with the peripheral surface, and is disposed at a predetermined inclination angle such that the powder raked from the peripheral surface of the cylindrical drum 91 at the tip rake portion 102 can slide down by inclination. Be done. The take-out tube 100 may have a tubular shape as a whole except for a rake portion 102 at the end thereof, and may have a shape like a gutter, for example, a U-shaped cross section. The take-out tube 100 has a transfer tube 101 at an end opposite to the tip rake portion 102.
Are rotatably connected. This take-out tube 100
Is that when it is not necessary to take out the granular material from the peripheral surface of the cylindrical drum 91, the tip rake portion 102 is retracted from the peripheral surface of the cylindrical drum 91. Move to the tip rake section 102
Can slide on the peripheral surface of the cylindrical drum 91.

It is desirable to provide the powder / granules quantitative sampling device teeth of the present invention, and a cleaning means capable of removing the powder / granules remaining on the conveying means without being taken out by the powder / grain taking out means. If the cleaning means is provided, the conveying section for receiving the granular material in the conveying means can always be cleaned. Therefore, even if there is a change in the granular material, for example, the granular material flowing through the process pipe can be removed. The grade has changed,
Even when the grade of the granules is the same, in any case where the characteristics of the granules, such as the particle size distribution, have changed due to fluctuations in the manufacturing conditions, the powder at the time of collection is not powdered. It is possible to prevent the occurrence of contamination by the granules.

According to the powder and particle quantifying apparatus of the present invention, the conveying section of the conveying means, that is, the conveying section for receiving the granular material dropped from the granular material collecting means can be cleaned. The structure is not particularly limited as long as the regulation of the amount of the granules is not hindered and the collection of the granules by the granule taking-out means is not hindered.

As a specific example of the cleaning means, for example, a transport section in the transport means, for example, the powder transport drum 14
Air blowing means for blowing air into the concave groove 20 (see FIG. 4) in the concave groove 20 (see FIG. 4) to blow off the remaining particles, and as shown at 35 in FIG. A conveying unit rubbing means provided with a brush or the like for rubbing can be used.

The air jetting means is constituted by a control valve 25 provided on the suction pipe 18, the air supply pipe 21, the ejector 23, the discharge pipe 22, for example, in the apparatus for quantitatively collecting the granular material shown in FIG. When cleaning the transporting unit, by closing the control valve 25,
By blowing air from the air supply pipe 21 to the suction pipe 18 and jetting air from the suction port 19, the transport unit can be cleaned.

The powder in the present invention is not limited to a specific powder, and examples thereof include pigment powder, dye powder, coal, wheat powder, food powder, organic substance powder, and toner.

When the apparatus for quantitatively collecting powders and granules of the present invention is connected to various analyzers for powders and granules, for example, a particle size distribution measuring device, etc., automatic quantitative analysis of various analyzes of powders and granules, for example, particle size distribution measurement is achieved. Can be preferred.

[0080]

According to the apparatus for quantitatively collecting powders of the present invention, a fixed amount of powder per hour can be stably collected. The fixed amount can be set to a desired amount by adjusting the conveying speed of the granular material conveying unit and the conveying amount regulating unit.

Therefore, when a certain amount of powder or granules is required, quantitative control with extremely excellent quantitative performance can be performed by simple control of adjusting the collection time. In addition, by transporting the whole amount of the powder and granules collected by the powder and particle quantifying device to the analyzer or the like, it is possible to supply a constant amount of the analysis sample per hour to the analyzer or the like.

According to the apparatus for quantitatively measuring the amount of powdered particles, a certain amount can be stably supplied to the analysis sample. The analysis can be performed by setting conditions such as the optimum sensitivity according to the supply amount, thereby improving the analysis accuracy.

Further, the powdery and granular materials collected by using the powder quantitative collection device of the present invention can be handled as a representative sample of the powdery and granular materials flowing in the process tube. for that reason,
There is no need for a conventionally required degenerator. The simplification of the device is achieved accordingly.

In addition, despite the fact that the structure is excellent in shrinkability, the structure is simple, so that downsizing and cost reduction can be realized.

[Brief description of the drawings]

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic explanatory view showing one embodiment of an apparatus for quantitatively collecting a granular material according to the present invention.

FIG. 2 is a schematic cross-sectional explanatory view showing a state where powder particles are piled up in concave grooves in the peripheral surface of a powder particle transport drum in one embodiment of the powder quantitative collection device of the present invention. is there.

FIG. 3 is a partial view showing a state after the particles accumulated on the outer peripheral surface of the drum for conveying the particles have been frayed in the embodiment of the apparatus for quantitatively collecting powder according to the present invention; It is a cross-section schematic explanatory drawing.

FIG. 4 is a schematic explanatory view showing a drum for transporting a granular material in one embodiment of the apparatus for quantitatively collecting a granular material according to the present invention.

FIG. 5 is a schematic explanatory view showing a specific example of a granular material collecting means in the granular material quantitative collection device according to the present invention.

FIG. 6 is a specific example of a granular material collecting means in the granular material quantitative collecting apparatus according to the present invention, and is a schematic explanatory diagram of a method of collecting a granular material with a cup; It is.

FIG. 7 is a specific example of a granular material collecting means in the granular material quantitative collecting apparatus according to the present invention, which is a method of collecting the granular material with a concave portion provided in a rod body. It is a schematic explanatory view of a sampling means.

FIG. 8 is a specific example of a granular material collecting means in the granular material collecting apparatus according to the present invention, and is a schematic diagram of a granular material collecting means for collecting a granular material with an oblique tube. FIG.

FIG. 9 is a schematic explanatory view showing one example of a combination of a granular material transporting means and a transport amount regulating means in the granular material quantitative sampling apparatus of the present invention.

FIG. 12 is a schematic partial cross-sectional explanatory view showing an example of a combination of the granular material transporting means and the transport amount regulating means in the granular material quantitative sampling apparatus of the present invention.

[Description of sign]

A: space, B: space, P: process tube, R
... Rotary actuator, 2 ... Flange, 3 ... Outer case, 4 ... Flange, 6 ...
Slope, 7: Shielding plate, 8: Partition wall, 9: Bearing, 10: Screw feeder body, 11:
Powder / granule sampling port, 12: Falling port, 13: Screw, 14: Drum for conveying powder, 15: Rotating shaft, 16: Scratched part, 17: Scratched plate , 1
8 ... suction pipe, 19 ... suction port, 20 ... concave groove, 21 ... air supply pipe, 22 ... discharge pipe, 23 ...
Ejector, 24 Control valve, 25 Control valve

Claims (2)

(57) [Claims] 1. A this without sucking the granular material flowing through the process tube taken, the granular material collecting means for immediately dropped in the process tube outside without storing the harvested granular material, rotation It has a cylindrical drum that can be formed,
After the rotation axis of the drum is arranged horizontally, and the granular material dropped by the granular material collecting means is received on the peripheral surface of the cylindrical drum.
Conveying means for conveying the granular material, and cooperating with the conveying means
Powder collecting and transporting amount regulating means for regulating the conveyance amount of aggregation of the particulate material to be conveyed, the stack of conveyed the particulate material after being regulated by the conveyance amount regulating means by said conveying means and An apparatus for quantitatively collecting powder and granules, comprising: a granule take-out means. 2. The powder and granule collecting means according to claim 1,
Powder, comprising: a conveying unit, a conveying amount regulating unit, and a granule taking-out unit; and a granule returning unit that returns a granule not received by the conveying unit into the process tube. Body quantitative sampling device.