JP2000070860A - Froth separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a froth separator which can separate highly efficiently froth and has a simple constitution and is easily cleaned. SOLUTION: This separator is provided with a vertical pipe part 3 for spouting downward pellets 2 which have been carried, a first separating pipe part 5 wherein air is blown up from the bottom to the pellets 2 spouted from the vertical pipe part 3 to separate and discharge froth and a second separating pipe part 6 wherein the pellets 2 passing through the first separating pipe part 5 and contg. unseparated froth are made to collide with a buffer 64 and air is blown up from the bottom to the pellets 2 to separate and discharge the froth 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floss separator for separating floss mixed in pneumatically transported pellets.

[0002]

2. Description of the Related Art A conventional floss separator is disclosed, for example, in Japanese Patent Application Laid-Open No. Hei 8-173906.
The one described in Japanese Patent Application Laid-Open Publication No. H10-260, 1993 is known. In this floss separator 1, as shown in FIG. 6, the pellets 2 transported via the air transport pipe are eccentrically charged into the vertical pipe section 3, ejected downward from the vertical pipe section 3, and ejected. Air is blown up from below in the separation pipe part 4 with respect to the pellets 2, and the floss 21 is separated upward and discharged from the discharge port 41.

As a method for measuring the floss separation efficiency, there is a so-called "wet measurement method". This is a method in which the pellets after floss separation are washed with a solvent, the solvent is filtered with filter paper, and the residue is measured. In the above-mentioned conventional floss separator 1, the value was about 40 to 50 ppm. . Although this value is not an unsatisfactory value and does not cause any problem in a chemical plant or the like, the era has demanded more efficient separation.

[0004] It is an object of the present invention to provide a floss separator which can satisfy the demands of such an era, that is, has a higher separation efficiency than conventional ones.

[0005]

According to the first aspect of the present invention,
In a floss separator for separating floss mixed in the pneumatically transported pellets, a vertical pipe section provided at the end of the pneumatic transport pipe for the pellets and ejecting the transported pellets downward, A cylindrical first separation pipe section that blows up air from below on the pellets discharged from the pipe section to separate the floss upward and discharges the pellets and collides the pellets passing through the first separation pipe section with the baffle. And a cylindrical second separation pipe section for blowing air from below to the pellets to separate and discharge the floss upward, and a part of the air blown up by the second separation pipe section is provided. First
The vertical pipe section is configured to be blown up by a separation pipe section. The vertical pipe section has a closed cylindrical section, an inlet pipe section which is eccentrically communicated with the upper section of the cylindrical section in a lateral direction, and a lower section of the cylindrical section. And a tapered pipe portion having a shape gradually narrowed toward the discharge port, and the inlet pipe portion is connected to the air transport pipe.

[0006]

FIG. 1 is a configuration diagram of a transportation system using a floss separator of the present invention. In this system,
The pellets 2 discharged from the source hopper 11 are separated from the air transport pipe 1 by the primary air supplied from the first blower 12.
After passing through 3, the floss is separated by the floss separator 10 and then put into the destination hopper 14.
Reference numeral 15 denotes a second blower. The secondary air supplied from the second blower 15 is supplied to the floss separator 10 from below via the air supply pipe 16 and the hopper 14. Reference numeral 17 denotes a bag filter that collects the floss separated by the floss separator 10.

FIG. 2 is a longitudinal sectional view of the floss separator 10, and FIG.
2 is a sectional view taken along line III-III of FIG. 2, and FIG. 4 is a sectional view taken along line IV-IV of FIG. The floss separator 10 includes a vertical pipe part 3, a first separation pipe part 5, and a second separation pipe part 6. The vertical pipe portion 3 is provided at the end of the air transport pipe 13 and communicates with the cylindrical portion 31 having a closed upper portion from the lateral direction and in an eccentric state as shown in FIG. 3 to the upper portion of the cylindrical portion 31. It is composed of an inlet pipe 32 and a tapered pipe 33 having a shape gradually narrowed toward the outlet 331, and the tapered pipe 33 communicates with the lower part of the cylindrical part 31. Vertical pipe part 3
Is configured to eject the transported pellets 2 downward from the outlet 331. Pneumatic transport pipe 13
Is connected to the inlet pipe 32.

[0008] The first separation pipe part 5 is composed of an upper cylinder 51 having a double structure with the lower part of the vertical pipe part 3, and a lower cylinder 52 communicating with the upper cylinder 51. . A floss discharge port 53 is provided in an upper part of the upper cylindrical body 51.

The second separation pipe part 6 includes an upper cylinder 61 having a double structure with the lower cylinder 52 of the first separation pipe part 5, and a lower cylinder 62 communicating with the upper cylinder 61. ,It is configured. The lower cylinder 62 is connected to the entrance 141 of the hopper 14. A floss discharge port 63 is provided in an upper portion of the upper cylindrical body 61, and an air flow adjustment valve 65 is interposed in the floss discharge port 63. A baffle 64 is provided in the lower cylinder 62 directly below the discharge port 521 of the lower cylinder 52. The baffle 64 includes a top plate 641 serving as a collision portion and a cylindrical portion 642, and is supported on the inner wall of the lower cylindrical body 62 by the support frame 643 at the cylindrical portion 642 as shown in FIG. The top plate 641 has a conical shape.

The air supply pipe 16 communicates with the upper part of the hopper 14, and secondary air supplied from the second blower 15 via the air supply pipe 16 passes through the second separation pipe section 6 from the hopper 14, The part is exhausted from the floss discharge port 63, and the remaining part is further blown up to the first separation tube part 5 from below. In addition, regarding the secondary air, the floss outlet 6
The ratio between the flow rate exhausted from 3 and the flow rate blown up to the first separation pipe section 5 is adjusted by an adjustment valve 65 provided at the floss discharge port 63.

Next, the operation will be described. The pellets 2 transported through the air transport pipe 13 are introduced into the cylindrical portion 31 from the inlet pipe 32 of the vertical pipe 3. At this time, the pellet 2 is eccentrically charged into the cylindrical portion 31 because the inlet pipe portion 32 is connected to the cylindrical portion 31 in an eccentric state. Therefore, the injected pellet 2 is accelerated downward while rotating along the pipe wall of the cylindrical portion 31 as shown by the arrow A, and is ejected from the outlet 331 at a high speed and wide angle with inertia force, The particles are uniformly dispersed in the lower cylindrical body 52 of the first separation tube portion 5. At this time, the floss 21 is similarly dispersed, but since the dispersed floss 21 has almost no inertial force, the lower cylindrical body 52
The air is carried upward by the secondary air that has been blown up from below, and is discharged from the floss discharge port 53. FIG. 5 is a schematic vertical sectional view showing the floss separation state at that time, where X indicates primary air, Y indicates secondary air, and Z indicates primary air and secondary air.

Further, the pellets 2 fall downward in the lower cylindrical body 52 and collide with the top plate 641 of the baffle 64 in the lower cylindrical body 62 of the second separation pipe part 6 and are radially dispersed. At this time, the floss 21 that has not been separated in the first separation pipe section 5 is similarly dispersed. Dispersed floss 21
Is carried upward by the secondary air blown up from below in the lower cylindrical body 62, and is discharged from the floss discharge port 63.

Then, the pellets 2 fall down in the lower cylindrical body 62 and are thrown into the hopper 14.

In the floss separator 10 having the above structure,
The floss 21 is separated in the first separation tube 5, and the unseparated floss 2 in the first separation tube 5 is further separated in the second separation tube 6.
1 is separated, so that the floss separation efficiency is improved.

Further, the floss separator having the above configuration can be configured by providing the vertical pipe section 3, the first separation pipe section 5, and the second separation pipe section 6, so that the configuration is simple and inexpensive. It is easy to wash with water when changing grades.

[0016]

According to the floss separator of the present invention, the floss can be separated in the first separation pipe section, and the floss can be separated in the second separation pipe section.
Since the unseparated floss can be separated in the first separation tube part, the separation efficiency of the floss can be improved.

The vertical pipe section, the first separation pipe section, and the second
Since it can be configured by providing the separation tube section, the configuration is simple and inexpensive. In addition, since water washing can be easily performed at the time of grade change, it is possible to provide high-quality pellets required for, for example, electric wire grades.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a transportation system using a floss separator of the present invention.

FIG. 2 is a longitudinal sectional view of the floss separator of the present invention.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a schematic vertical sectional view showing a floss separation state in a first separation tube section.

FIG. 6 is a longitudinal sectional view of a conventional floss separator.

[Explanation of symbols]

 2 Pellet 21 Floss 3 Vertical pipe part 31 Cylindrical part 32 Inlet pipe part 33 Tapered pipe part 5 First separation pipe part 6 Second separation pipe part 10 Floss separator 13 Air transport pipe

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D021 FA03 FA15 FA17 FA25 GA02 GA05 GA08 GA12 GA13 GA14 GA16 GB02 HA10

Claims (1)

[Claims] 1. A floss separator for separating floss mixed in a pneumatically transported pellet, the floss separator being provided at an end of an air transport pipe for the pellet and vertically ejecting the transported pellet downward. A pipe section, a cylindrical first separation pipe section that blows up air from below on the pellets discharged from the vertical pipe section to separate and discharge floss upward, and passes through the first separation pipe section. A cylindrical second separation pipe portion for colliding the pellets with the baffle to scatter the air, blowing air from below to the pellets, separating the floss upward and discharging the floss upward, and blown up by the second separation pipe portion. A part of the air is blown up in the first separation pipe part, and the vertical pipe part is an inlet pipe that communicates with the cylindrical part whose upper part is closed and laterally and eccentrically with the upper part of the cylindrical part. Section and below the cylindrical section Consists of a tapered tube portion having a gradually narrowed shape toward the communicating outlet, the inlet pipe portion froth separator is characterized by being connected to an air transport pipe.