JPH07285666A - Powder/grain continuous supply device - Google Patents

Abstract

PURPOSE:To provide a powder/grain continuous supply device capable of supplying a constant amount of a bulk material the particle size of which is fine. CONSTITUTION:A blowout cylinder 8 is arranged at the central part in a main body 3, a large number of vertical holes 8a for passing of a bulk material 11 are drilled on a peripheral wall of the lower end part of this blowout cylinder 8, simultaneously, ring partition plates 9, 10 to place the bulk material 11 on them which have a large number of bulk material dropping holes 9a, 10a drilled on them are externally fit on the blowout cylinder 8, a carrier gas introduction passages formed on a lower block 12 installed on the lower end part of the main body 3 and a gas inlet of this carrier gas introduction passage is allowed to communicated with carrier gas supply device. Additionally, a gas outlet 15b is opened to the inside of the blowout cylinder 8, a carrier gas introduction pipe 23 is provided on a cover body 4 to cover the main body 3, this introduction pipe 23 is arranged on the upper side of the blowout cylinder 8, and an aerial vibrator 14 is provided on the lower block 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powdery or granular material continuous supply device capable of continuously supplying a fixed amount of powdery or granular material such as powder or granular material.

[0002]

2. Description of the Related Art Conventionally, various devices for continuously supplying a fixed amount of powdery particles have been produced. As such an apparatus, a gas such as air is caused to flow at a high speed in a sealed tube, and a certain amount of powder or granular material is fed into the tube, and the powder or granular material is placed on the flow of the gas to be supplied to a device to be supplied. There is a gas transport type.

[0003]

However, the above-mentioned type of device has a problem that the supply amount fluctuates (pulsation). In particular, when the particle size of the powder or granule becomes fine, the above-mentioned fluctuation is likely to occur. In addition, when the bridge phenomenon occurs at the portion for feeding the powder or granules into the pipe (that is, the powder or granule supply port) during operation, there is a problem that the supply amount is extremely reduced.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a powdery or granular material continuous supply device capable of supplying a fixed amount of powdery or granular material having a fine particle size.

[0005]

In order to achieve the above-mentioned object, a powdery or granular material continuous feeding apparatus of the present invention comprises a bottomed cylindrical main body and a lid for covering the upper end opening of the main body. A cylindrical body extending upward from the bottom wall of the main body is arranged in the central portion of the main body, and a large number of powder and granular material dropping holes are formed in the cylindrical body for mounting the granular body. The annular partition plate is externally fitted, and the interior of the main body is vertically divided by the annular partition plate, and a large number of powder passages are formed in the peripheral wall of the lower end portion of the tubular body, and a carrier is provided on the bottom wall of the main body. A gas introduction path is formed, and a gas inlet of the carrier gas introduction path communicates with a carrier gas supply means provided outside the main body, and a gas outlet is opened inside the cylindrical body, and a carrier is provided on the lid body. A gas outlet pipe is provided, and the lower end opening of this outlet pipe is positioned above the upper end opening of the tubular body. One of the body and the lid member, a configuration that is provided with vibration means for vibrating the body.

[0006]

In other words, the continuous powder and granular material supply device of the present invention is
A bottomed tubular main body and a lid for covering the upper end opening of the main body are provided, and one of the main body and the lid is provided with a vibrating means for vibrating the main body. Further, an annular partition plate for placing a powder or granular material having a large number of powder or granular material dropping holes is externally fitted to the tubular body disposed in the central portion of the main body, and the lower end of the tubular body is A large number of powder passages are formed in the peripheral wall of the section. The gas inlet of the carrier gas introduction passage formed in the bottom wall of the main body is communicated with the carrier gas supply means provided outside the main body, and the gas outlet is opened inside the tubular body. On the other hand, the lower end opening of the carrier gas outlet pipe provided in the lid is positioned above the upper end opening of the tubular body.

When continuously supplying powdery particles using such a powdery particle continuous feeding device, first, the powdery particles are placed on an annular partition plate which divides the inside of the main body into upper and lower parts and vibrated. The body is vibrated by means. As a result, the powder particles placed on the annular partition plate fall from the numerous powder particle dropping holes of the annular partition plate, and the numerous powder particles of the tubular body disposed in the central portion of the main body. It flows into the cylindrical body through the grain passage hole. On the other hand, the carrier gas is introduced into the carrier gas introduction passage formed in the bottom wall of the main body by the carrier gas supply means.
As a result, the carrier gas introduced into the carrier gas introduction passage flows into the cylindrical body after passing through the carrier gas introduction passage, and rises toward the carrier gas outlet pipe provided in the lid. At this time, the powder particles in the tubular body are sucked into the carrier gas that rises in the tubular body, and ascends in the tubular body together with the carrier gas toward the carrier gas outlet pipe. Then, the carrier gas mixed with the above-mentioned powder and granules flows into the carrier gas outlet pipe, passes through this, and then is supplied to the supply target device.

As described above, according to the powdery or granular material continuous feeding device of the present invention, the powdery or granular material placed on the annular partition plate is perforated in the annular partition plate by vibrating the main body. A carrier formed on the bottom wall of the main body while being dropped from a large number of powder and granular material dropping holes and flowing into the inside of the cylindrical body through a large number of powder and granular material passage holes formed at the lower end of the cylindrical body. Carrier gas is introduced into the gas introduction path to raise the inside of the cylindrical body, whereby the powder or granular material that has flowed into the cylindrical body is discharged from the inside of the main body along with the flow of the carrier gas that rises in the cylindrical body. I am trying. Therefore, it is possible to continuously supply a certain amount of fine particles having a fine particle size,
The bridge phenomenon does not occur in the main body, and the supply amount does not decrease extremely during operation. Also, when the vibrating means is an air vibrating device, the entire device is small and inexpensive.
If the bottom surface of the main body is formed into a hemispherical shape and is mirror-finished, the powder particles that have fallen from the powder particle falling holes of the annular partition plate will flow down while sliding smoothly on the bottom surface of the main body. Since it passes through the granular material passage hole of the cylindrical body, the supply amount can be made strictly constant, and the residual amount of the granular material at the bottom becomes extremely small.

Next, the present invention will be described in detail based on embodiments.

[0010]

1 to 3 show one embodiment of the powdery and granular material continuous feeding apparatus of the present invention. In the figure, 1 is a main body of the apparatus, and 2 is a support means thereof. As shown in FIG. 4, the apparatus main body 1 includes a main body 3 and a lid body 4 that covers the upper end opening of the main body 3. The main body 3 is formed in a lower conical cylindrical body, and a pair of left and right cylindrical projections 5 are horizontally formed on the outer peripheral surface of the upper large diameter portion of the main body 3, and the lower small diameter portion is formed. A flange 6 is formed at the lower end of the outer peripheral surface of the protrusion 7. Further, the lower small-diameter portion 7 has a structure shown in FIG.
As shown in FIG. 3, a concave portion 7a having a circular cross section is formed on the lower end surface thereof, and the inner peripheral surface of the lower small-diameter portion 7 located above the concave portion 7a is formed as an inclined truncated cone-shaped inclined surface 7b. Has been done. In FIG. 5, 7c is the inclined surface 7b.
It is an annular groove formed in.

Inside the main body 3, a cylindrical ejection cylinder 8 (upper end opening diameter: 18 mm) is arranged in the central portion thereof. As shown in FIG. 6, the ejection cylinder 8 has a vertical wall 8a (vertical width: 80 mm, lateral width: 1 m) for passing the granular material, which extends upward from the lower end surface of the peripheral wall of the lower end portion thereof.
m) are formed at a predetermined interval (4 are hidden and invisible), and the lower end edge thereof is fitted into the annular groove 7c formed in the inclined surface 7b of the lower small diameter portion 7 described above. ing. Annular partition plates 9 and 10 are externally fitted to the ejection cylinder 8 in two steps in the vertical direction, whereby the inside of the main body 3 is partitioned into three chambers in the vertical direction. These annular partition plates 9 and 10 are for mounting the powder particles 11 on the upper side thereof, and as shown in FIG. 7, the upper annular partition plate 9 has eight powder particle dropping holes. Eight rows 9a (diameter 8mm) of porous group rows 9b are formed radially (at equal angles), and the lower annular partition plate 10 has four powder particle dropping holes 10a (diameter 7mm). A group of porous groups (not shown) radially (extending in the same direction as each group of porous groups 9b of the upper annular partition plate 9,
Moreover, eight rows are formed at the same angle.

In the collar portion 6 of the lower small diameter portion 7 of the main body 3,
A collar portion 13 formed on the upper end portion of the lower block 12 is fixed by bolts (not shown). This lower block 1
2, the air vibrator 14 is provided in the inside thereof as shown in FIG.
Is provided. The air vibrator 14 has an air introduction path 14a formed in the lower block 12 and a horizontal annular hole communicating with the air introduction path 14a (the horizontal annular hole is formed with a slight distortion). 14b and a ball 14c slidably disposed in the horizontal annular hole 14b.
And an air outlet (not shown), and the air inlet of the air inlet 14a is open to the side end surface of the lateral convex portion 12a protruding from the lateral side surface of the lower block 12. Then, compressed air is introduced into the air introduction passage 14a, and the introduced compressed air causes the sphere 14c to move horizontally in the horizontal annular hole 14b to generate vibration. The vibration thus generated is transmitted to the main body 3 and the main body 3 vibrates.

A carrier gas introducing passage 15 is formed inside the lower block 12 so as to penetrate the central portion thereof. The carrier gas introduction passage 15 has a gas inlet 15 a opening at the lower end surface of a lower convex portion 17 protruding from the central portion of the lower surface of the lower block 12, and the gas outlet 15 thereof.
The opening b is opened to the upper end surface of the upper convex portion 16 protruding from the central portion of the upper surface of the lower block 12 into the ejection cylinder 8. In FIG. 5, 19 is a breathable sintered plate (effective area: 15.
89 cm ² ), and the recess 7 of the lower small-diameter portion 7 of the main body 3 is fitted onto the upper protrusion 16 of the lower block 12.
It is housed in a. Then, four through holes (the front and rear through holes are hidden and invisible) 20 are formed in the peripheral wall portion of the upper convex portion 16 corresponding to the inner peripheral surface of the sintered plate 19.

The lid 4 has a convex portion 21 at the center of the upper surface.
Are formed so as to project, and the lid 4 passes through the inside of the convex portion 21.
A carrier gas lead-out path 22 penetrating through is formed.
The lower end of the carrier gas outlet passage 22 is formed in a large diameter portion, and the carrier gas outlet pipe 23 is formed in the large diameter portion.
The upper end of is fitted. This carrier gas outlet pipe 23
Has a lower portion formed in a conical shape with a downward spread, and a lower end opening 23a thereof has an upper end opening 8b of the ejection cylinder 8.
It is located face-to-face directly above. In FIG. 1, reference numeral 24 is a residual pressure release valve for releasing the pressure in the main body 3 to the outside after opening the lid 4 after the operation, and 25 is a holding metal fitting for fixing the lid 4 in the closed state. , 26 are a pair of left and right grips formed on the upper surface of the lid 4.

The support means 2 is formed by connecting a pair of left and right substantially inverted V-shaped pipe members 27 with a pair of front and rear connecting members 28. As shown in FIG. A U-shape (which can be removably engaged with the top of the V-shape in a state of being reciprocally engaged with the cylindrical protrusion 5 protruding from the upper large-diameter portion of the main body 3 so as to be swingable in the front-rear direction ( A support portion 29 having a semicircular arc shape with an open upper surface is formed to project.

In the above-mentioned structure, first, the lid 4 is closed with the powder particles 11 placed on the annular partition plates 9 and 10 and fixed by the pressing metal fittings 25. Then, the air vibrator 1
Compressed air is supplied to the air introduction passage 14a of No. 4 to generate vibration, and the main body 3 is vibrated with this vibration. As a result, the powder particles 11 placed on the annular partition plates 9 and 10 are dropped from the numerous powder particle falling holes 9a and 10a formed in the annular partition plates 9 and 10 to the lower portion of the main body 3. , Flows into the ejection pipe 8 through a large number of vertical holes 8a formed at the lower end of the ejection pipe 8 (see the arrow shown by the thin line in FIG. 5). On the other hand, the carrier gas is introduced into the carrier gas introduction passage 15 of the lower block 12, the carrier gas is caused to flow into the ejection cylinder 8 through the carrier gas introduction passage 15, and a part of the carrier gas is projected to the upper convex portion of the lower block 12. It is made to flow into the main body 3 (outer peripheral portion of the ejection cylinder 8) through the inside of the sintered plate 19 from the through hole 20 formed in 16 (see the arrow shown by the thick line in FIG. 5). As a result, the powder particles 11 in the ejection cylinder 8 are sucked into the carrier gas rising in the ejection cylinder 8, and
The powdery particles 11 at the bottom of the main body 3 are agitated by the carrier gas that has passed through the sintered body 19 and are sucked into the carrier gas that rises in the ejection cylinder 8 while being agitated. In this way, the powdery or granular material 1 is added to the carrier gas while rising in the ejection cylinder 8.
After 1 is mixed, the carrier gas mixed with the powder and granular material 11 flows into the carrier gas outlet pipe 23 of the lid 4,
It is taken out from the carrier gas outlet 22.

As described above, in the above embodiment, by vibrating the main body 3, the annular partition plates 9 and 10 in the main body 3 are made.
The granules 11 placed on the powder granules 9a and 10a
Since the particles are made to fall through the vertical holes 8a of the ejection cylinder 8 and flow into the ejection cylinder 8, the grain size is 10
It is possible to continuously supply a fixed amount of powder particles of 0 to 0.1 μm, and furthermore, the bridge phenomenon does not occur in the main body 3, and the supply amount does not decrease extremely during operation. Moreover, since the air vibrator 14 is used as the vibrating means, the entire apparatus is small and inexpensive.

The above-mentioned continuous powder and granular material supply device can be used in a microbead spheronization processing device as shown in FIG. That is, in this processing apparatus, as the granular material 11, Wilmite (4 μm) is used as the annular partition plates 9 and 1 of the main body 3.
0 (when Wilmite is less than 50 kg, it is placed on the lower annular partition plate 10, and when it exceeds 50 kg, the excess is placed on the upper annular partition plate 9) Air is supplied to the supply device, the burner 30 for spheroidizing the wilmite, and the air vibrator 14.
Air supply device 31 for supplying ² to 4 kg / cm ² )
And an oxygen gas supply device 32 for supplying oxygen gas (flow rate: 2300 liters / hour) as a carrier gas to the main body 3.
And the convex portion 2 of the lid body 4 of the continuous powder and grain feeder.
1 and the burner 30 are connected by a Wilmite feed pipe 33, and an air supply pipe 34 extending from the air supply device 31 is connected to the lateral convex portion 12a of the lower block 12 of the powdery or granular material continuous supply device.
An oxygen gas supply pipe 35 extending from the oxygen gas supply device 32 is connected via a three-way valve 36 to the lower convex portion 17 of the lower block 12 of the powder and granular material continuous supply device and the Wilmite feed pipe 33.
It is linked to and. An air source pressure gauge 37, a solenoid valve 38, and a pressure reducing piece 40 with an air pressure gauge 39 are provided on the air supply pipe 34, and a solenoid valve 41 is provided on the oxygen gas supply pipe 35 upstream of the three-way valve 36. A pressure reducing piece 43 with a pressure gauge 42 and a flowmeter 44 are provided. Further, an oxygen supply pipe 47 connecting the oxygen supply device 45 and the fuel gas supply device 46 to the burner 30, connecting the burner 30 and the oxygen supply device 45, and a fuel gas connecting the burner 30 and the fuel gas supply device 46. Solenoid valves 49, 53 and pressure reducing pieces 51, 55 with pressure gauges 50, 54 are provided on the supply pipe 48, respectively.
And flow meters 52 and 56 are provided. Further, a cooling water supply device 57 is connected to the burner 30 via a cooling water supply pipe 58, and an electromagnetic valve 59 and a water shutoff alarm buzzer 60 are provided on the cooling water supply pipe 58. In the figure, 61 is a cooling water extraction pipe.

According to the above processing device, the air supply device 3
The air vibrator 14 provided in the lower block 12 of the continuous powder-and-particles supply device vibrates by the air sent from the main body 1 and the main body 3
Vibrates, which causes the willemite placed on the annular partition plates 9 and 10 of the main body 3 of the powder and granular material continuous supply device to fall below the main body 3 and flow into the ejection pipe 8 inside the main body 3. The Wilmite that has flowed into the ejection pipe 8 is sucked into the oxygen gas that is pressure-fed from the oxygen gas supply device 32 and rides on the flow of this oxygen gas to continuously blow a fixed amount (6 kg) from the main body 3.
/ Hour-10 kg / hour) is taken out and supplied to the burner 30. Then, the wilmite is heated in the burner 30, and the surface tension thereof is utilized to make the wilmite spherical, and the wilmite is taken out to the outside. In addition, when the supply of the Wilmite to the burner 30 is stopped, the three-way valve 36 is operated to send the carrier gas only to the Wilmite feed pipe 33.

FIG. 10 shows another example of the present invention. In this example, the convex portions 16 and 17 are not integrally formed on the upper surface and the lower surface of the lower block 12. Then, instead of the both convex portions 16 and 17, the cylindrical body 65 is inserted into a through hole formed in the central portion of the lower block 12, and the upper and lower ends thereof project from the upper surface and the lower surface of the lower block 12. The inner space of the cylindrical body 65 is formed in the carrier gas introduction passage 15. And this cylindrical body 6
5, the through hole 20 is formed in the peripheral wall portion corresponding to the sintered body 19.
Has been drilled.

FIG. 11 shows still another example of the present invention. In this example, the convex portion 16 is not integrally formed on the upper surface of the lower block 12. In place of the convex portion 16, a through hole 19a communicating with the through hole 15c in the central portion of the lower block 12 is formed in the central portion of the sintered body 19 housed in the concave portion 7a of the lower end surface of the main body 3. The cylindrical body 66 is fitted in the upper portion of the through hole 19a, and the through hole 15c in the central portion of the lower block 12, the through hole 19a in the central portion of the sintered body 19 and the cylindrical body 66 are provided. The internal space of is formed in the carrier gas introduction path 15. In such a structure, the carrier gas introduction passage 15
The portion of the inner peripheral surface of the sintered body 19 facing inward becomes wider, and the carrier gas easily flows into the sintered body 19.

FIG. 12 shows still another example of the present invention. In this example, the convex portion 16 is not integrally formed on the upper surface of the lower block 12. Further, instead of the convex portion 16, a concave portion 19b is formed in the central portion of the upper surface of the sintered body 19, and a cylindrical body 67 is fitted in the concave portion 19b, and the central portion of the lower block 12 is formed. Through hole 1
An inner space of 5c, the sintered body 19 and the cylindrical body 67 is formed in the carrier gas introduction passage 15. In the case of such a structure, the through hole 15c in the central portion of the lower block 12
Since all the carrier gas that has passed through passes through the inside of the sintered body 19, the carrier gas flowing out into the cylindrical body 67 is also
The carrier gas flowing out to the outer peripheral portion of the cylindrical body 67 has substantially the same flow velocity.

FIG. 13 shows still another example of the present invention. In this example, the lower small diameter portion 7 of the main body 3 and the lower block 12 are integrally formed. Then, in the recess 68 formed on the bottom surface of the main body 3, the sintered body 19 shown in FIG.
Is housed.

FIG. 14 shows still another example of the present invention. In this example, the inner peripheral surface 7b of the lower small-diameter portion 7 of the main body 3 is formed in a hemispherical shape and is mirror-finished. In the case of such a structure, the granular material 11 dropped from the large number of granular material falling holes 9a, 10a of the annular partition plates 9, 10 slides down smoothly on the inner peripheral surface 7b of the lower small diameter portion 7. While passing through the vertical hole 8a of the jetting cylinder 8, the remaining amount of the powdery or granular material 11 on the inner peripheral surface 7b of the lower small diameter portion 7 becomes extremely small.

In the above embodiment, the main body 3 and the lid 4 are formed separately, but the present invention is not limited to this, and both may be formed integrally.

Although oxygen gas is used as the carrier gas in the above embodiment, the present invention is not limited to this, and dry air, nitrogen, argon gas or the like can be used according to the purpose.

Further, although the lower block 12 is provided with the air vibrator 14 in the above embodiment, the present invention is not limited to this, and the lid body 4 may be provided with the air vibrator 14. Further, in place of the air vibrator 14, a vibration source such as a vibration motor may be used.

Further, a granular adsorbent (hereinafter abbreviated as "adsorbent") obtained by using an adsorbent material as the powder and granules 11 and subjecting this to a spheroidization process by the above-described spheronization processing device or the like is used. Figure 15
It may be used for the device shown in. This device is a device that separates oxygen in the air as a product gas. Raw material air passes through an air filter 71, an adsorption type continuous dehumidification device 72, is pressurized by a blower 73, and is adsorbed. Heat exchanger 75 of adsorption regeneration tank 75 provided below tower 74
It is sent into a. This adsorption regeneration tank 75 is an adsorption tower 74.
In the inside, the nitrogen gas is desorbed from the granular adsorbent 84 that adsorbs the nitrogen gas (easily adsorbing gas) to regenerate the adsorbent 84, and the vacuum pump 76 is always in a depressurized state. The heat exchanger 75a heats the adsorbent 84 as described above to promote desorption of nitrogen gas. That is, in general, the adsorbent 84 generates heat when adsorbing gas,
It absorbs heat during desorption. Therefore, in the desorption / regeneration tank 75, as the desorption of nitrogen gas progresses, the adsorbent 84
The temperature of the gas decreases, which makes it difficult to desorb nitrogen gas. In this apparatus, the heat exchanger 75a applies the heat of compression of the blower 73 to the raw material air, and the heat of compression heats the adsorbent 84 to suppress the temperature drop of the adsorbent 84. Therefore, the desorption rate of the adsorbent 84 does not decrease.

The raw material air thus heated by the adsorbent 84 is cooled by the aftercooler 77, further cooled by the water cooling type cooling device 78, and controlled within the temperature range of -40 to 40 ° C. to the adsorption tower 74. Will be introduced in. The inside of the adsorption tower 74 is vertically divided into three by two partition shelves 79 and 80, and the space between the partition shelves 79 and 80 is an adsorption space 81. A plurality of nozzles 82 for blowing out raw material air are planted in the partition shelf 79, and a downflow hole 83 for gradually flowing down the adsorbent 84 is provided.
Are formed in plural. A wire mesh (not shown) is provided at the tip opening of the nozzle 82 to prevent the adsorbent 84 from entering. A downflow nozzle 83a hangs down from the downflow hole 83 so that the adsorbent 84 can flow down in a uniform distribution state.

Reference numeral 85 is a blocking plate formed to provide a raw material air introduction space below the partition shelf 79, and the flow-down nozzle 83a penetrates through the blocking plate 85 and extends downward. The adsorbent 84 stored on the partition shelf 79 is blown out by the raw material air from the nozzle 82,
It is contacted and adsorbed, and flows downward from the lower part via the downflow hole 83 and the downflow nozzle 83a. The adsorbent 84 flowing downward is in a state of adsorbing nitrogen gas by the contact adsorption in the adsorption space 81. Adsorption space 81
Oxygen gas collects in the upper part of. That is, as a result of the nitrogen gas in the raw material air being adsorbed and removed by the adsorbent 84, oxygen gas remains and accumulates in the upper part of the adsorption space 81. 8
Reference numeral 6 is a product oxygen gas take-out pipe for discharging the oxygen gas as product oxygen gas. Similar to the partition shelf 79, the partition shelf 80 that constitutes the ceiling of the suction space 81 is provided with a nozzle 82 having a wire mesh (not shown) and a downflow hole 83 provided with a nozzle 83a. However, a central hole (not shown) is formed in the central portion of the blocking plate, and a part of the oxygen gas accumulated in the upper part of the adsorption space 81 is introduced from the central hole. The introduced oxygen gas passes through the nozzle 82, further passes upward in the layer of the adsorbent 84, and is exhausted to the outside from the exhaust pipe 87. As a result, the adsorption tower 74
The internal pressure is kept almost uniform. Inside the adsorption tower 74, a downflow hole 83 and a nozzle 83a provided in the partition shelf 79.
The adsorbent (which adsorbs nitrogen gas) 84 that has flowed downwardly through is flowed down to the lower first buffer tank 89 by a rotary valve 88 that is constantly rotating counterclockwise at a constant speed. The first buffer tank 89 is located between the adsorption tower 74 and the desorption / regeneration tank 75 described above, and functions to maintain the vacuum state in the desorption / regeneration tank 75. A rotary valve 90 that constantly rotates in a counterclockwise direction at a constant speed is also provided below the first buffer tank 89, and the adsorbent 84 in the buffer tank 89 is gradually fed into the desorption regeneration tank 75. It is like this.

As described above, the desorption / regeneration tank 75 is depressurized to a depressurized state (preferably 10 to 500 torr) by the vacuum suction force of the vacuum pump 76 and heated by the action of the heat exchanger 75a. Therefore, the nitrogen gas can be desorbed efficiently. The adsorbent 84 that has been desorbed and regenerated from nitrogen gas is fed into the second buffer tank 92 by a rotary valve 91 that is provided below the desorption / regeneration tank 75 and constantly rotates counterclockwise at a constant speed. Second buffer tank 9
2 is provided so that the pressure in the adsorption tower 74 does not directly affect the inside of the desorption regeneration tank 75 via the transport path 93.
A fourth rotary valve 94 that constantly rotates at a constant speed in the counterclockwise direction is provided below the second buffer tank 92 so that the regenerated adsorbent is constantly supplied in a fixed amount into the transport path 93. It has become. In the conveying path 93, a conveyor belt conveyor (not shown) is provided in a horizontal portion 93a, and a bucket conveyor (not shown) is provided in a vertical portion, so that the adsorbent 84 can be moved horizontally. Direction, then vertically, and returned to the upper part of the adsorption tower 74. A classifier 95 is provided on the upper portion 93b of the transport path 93 for the purpose of preventing the moving state of the adsorbent from changing, and the adsorbent 14 crushed and powdered in the course of the above-mentioned movement is classified and removed to remove the powder. The change of the moving state due to the mixed adsorbent is prevented.

The product oxygen gas thus obtained had a purity of 95.1%, which was a very good result.
On the other hand, the purity of the oxygen gas obtained by using the conventional three-column PSA apparatus packed with zeolite molecular sieve was 93% (the PSA apparatus has the same performance as the gas separation apparatus of the above-mentioned embodiment). Have).

As described above, the above-mentioned apparatus is equipped with the granular adsorbent 84.
Since the particulate adsorbent 84 is circulated and reused by adsorbing and desorbing the easily adsorbed gas in the process of moving while moving a large number of valves, it is possible to open and close a large number of valves and frequent valves like a conventional PSA method device. In addition to being unnecessary, pressure fluctuations are extremely small, and variations in product gas purity do not occur. In addition, since the granular adsorbent 84 is accumulated in layers in the adsorption space 81 or the like of the adsorption tower 74 and the raw material air is blown into the adsorption space 81 through the nozzle 82, the granular adsorbent 84 is statically charged in the sealed adsorption space 81. It only comes into contact with air, and the pulverization phenomenon due to the sudden movement impact of the particulate adsorbent 84 is also suppressed.

[0034]

As described above, according to the powdery or granular material continuous feeding device of the present invention, the powdery or granular material placed on the annular partition plate is pierced into the annular partition plate by vibrating the main body. It is made to fall from a large number of powder granule dropping holes provided, and made to flow into the inside of the cylindrical body through a large number of powder granule passage holes formed at the lower end of the cylindrical body, while being formed on the bottom wall of the main body The carrier gas is introduced into the formed carrier gas introduction path to raise the inside of the cylindrical body, whereby the granular material flowing into the cylindrical body is placed on the flow of the carrier gas that rises in the cylindrical body, It is derived from. Therefore, it is possible to continuously supply a fixed amount of fine particles having a fine particle size, and the bridging phenomenon does not occur in the main body, so that the supply amount does not extremely decrease during operation. Also, when the vibrating means is an air vibrating device, the entire device is small and inexpensive. If the bottom surface of the main body is formed into a hemispherical shape and is mirror-finished, the powder particles that have fallen from the powder particle falling holes of the annular partition plate will flow down while sliding smoothly on the bottom surface of the main body. Then, because it passes through the granular material passage hole of the cylindrical body,
The supply amount can be made strictly constant, and the remaining amount of the granular material at the bottom becomes extremely small.

[Brief description of drawings]

FIG. 1 is a front view of a powdery or granular material continuous feeder according to an embodiment of the present invention.

FIG. 2 is a side view of the powdery or granular material continuous feeder.

FIG. 3 is a plan view of the powdery or granular material continuous feeder.

FIG. 4 is an explanatory diagram of a main body of the powdery- or granular-material continuous supply device.

FIG. 5 is a sectional view of a main part of the main body.

FIG. 6 is a perspective view of a main part of the ejection cylinder.

FIG. 7 is an explanatory diagram of an annular partition plate.

FIG. 8 is an explanatory view of a main part of a pipe material.

FIG. 9 is an explanatory diagram of a microbead spheronization processing device.

FIG. 10 is a sectional view showing another example of the present invention.

FIG. 11 is a sectional view showing still another example of the present invention.

FIG. 12 is a sectional view showing still another example of the present invention.

FIG. 13 is a sectional view showing still another example of the present invention.

FIG. 14 is a sectional view showing still another example of the present invention.

FIG. 15 is an explanatory diagram of an apparatus using the adsorbent obtained by the present invention.

[Explanation of symbols]

 3 Main body 4 Lid body 8 Ejection cylinder 8a Vertical hole 9,10 Annular partition plate 9a, 10a Powder particle falling hole 11 Powder particle 12 Lower block 14 Air vibrator 15 Carrier gas introduction path 15a Gas inlet 15b Gas outlet 23 Carrier gas derivation tube

Claims (3)

[Claims] 1. A cylindrical body having a bottom and a lid for covering an upper end opening of the body, wherein a cylindrical body extending upward from a bottom wall of the body is provided in a central portion of the body. The annular partition plate for placing the granular material, which is provided with a large number of powder particle dropping holes, is externally fitted to the tubular body, and the interior of the main body is vertically partitioned by the annular partition plate, A large number of powder passages were formed in the peripheral wall of the lower end of the tubular body, a carrier gas introduction path was formed in the bottom wall of the main body, and a gas inlet of this carrier gas introduction path was provided outside the main body. While communicating with the carrier gas supply means, a gas outlet is opened inside the tubular body, a carrier gas outlet pipe is provided in the lid, and the lower end opening of the outlet pipe is above the upper end opening of the tubular body. A vibrating means for positioning and vibrating the main body is provided on one of the main body and the lid. Continuous powder and grain feeder. 2. The powdery or granular material continuous supply apparatus according to claim 1, wherein the vibrating means is an air vibrator. 3. The powdery or granular material continuous feeder according to claim 1, wherein the bottom surface of the main body is formed in a hemispherical shape and is mirror-finished.