JPH05147734A - Dust removing device - Google Patents

Abstract

PURPOSE:To efficiently remove dust from powder by arranging baffle plates respectively between a dust suction port and a powder introduction port, and between the powder introduction port and a blower-air duct opening in the inside of a dust removing chamber, thereby allowing the powder to collide with the respective baffle plates respectively. CONSTITUTION:In order to remove dust 2 from chips 1 using a dust removing device 3, the chips 1 introduced from an introduction port 41 into a chamber are guided to collide against a first baffle plate 45 to be dispersed, and the dust 2 is separated from the chips 1. The separated dust 2 is sucked from a suction port 43 into a suction pipe 44. The dropping chips 1 collide against a second baffle plate 6 again to be dispersed and passed through holes 6a of the second baffle plate 6, and thus the dust 2 is separated from the chips 1. At this time, air is blown from the blowing port 4 toward the suction port 43 to produce an ascending air current in the chamber, and thus the dust 2 separated by the second baffle plate is born in the ascending air current to be sucked through the suction port 43 into the suction pipe 44.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust removing device used for a chip pneumatic transportation system or the like in a step of carrying a chip which is a raw material of synthetic fibers.

[0002]

2. Description of the Related Art Usually, the chips used as raw materials for synthetic fibers are
It is made by finely cutting a solid high molecular polymer in the shape of an elongated rod in the longitudinal direction, and the chip made by this cutting is directly transported to the spinning process by pneumatic transport or sent to a bulk car. After that, it is even transported to the spinning process. However, during the above cutting, dust such as chips and dust in the form of powder or skin (whisker-like or film-like) are generated, so that the piping in the transport path is clogged, dust is mixed into the product, and spinning is performed. There are problems such as trouble in the process. Therefore, conventionally, by providing a classifier and a cyclone in the middle of pneumatic transportation of the chip, the classifier removes the heavy dust mixed in the chip, and the cyclone uses the light dust mixed in the chip (powder-like, skin-like, etc.). (Dust) is removed.

[0003]

However, in the above cyclone, powdery dust out of the light dust mixed in the chip adheres to the chip, and skin-like dust clings to the chip and is transported together with the chip. Therefore, it is not possible to sufficiently remove the dust mixed in the chip only by turning the chip in the cyclone. For this reason, the fact that the pipe is clogged with dust has not been solved.

Therefore, in place of the cyclone, the applicant has devised a dust removing chamber 40 as shown in FIG. 7 and has already used it. That is, in the dust removing chamber 40, the chip introducing port 41 is opened at the upper side surface thereof.
A chip transport pipe 42 for pneumatically transporting the chip 1 communicates with the chip inlet 41. In addition, the suction port 4 on the ceiling surface
3 is opened, and a suction pipe 44 communicates with the suction port 43, and a suction means (not shown) is connected to the suction pipe 44. Further, a pad plate 45 hangs down from the central portion of the ceiling surface, and the pad plate 45 partitions the chip introduction port 41 and the suction port 43.

With the above structure, when the chip 1 pneumatically transported in the chip transport pipe 42 flows into the dust removing chamber 40 from the chip inlet 41, it collides with the contact plate 45 and is dispersed.
Due to the impact force at this time, the powdery dust 2 adhering to the chip 1 is separated from the chip 1, and at the same time, the chip 1
The skin-like dust 2 that is entangled in the chip 1 separates from the chip 1. The powdery or skin-like dust 2 thus separated is sucked from the suction port 43 by the suction means.
4 is sucked. On the other hand, after the collision, the chip 1 drops downward and collects in the lower part of the dust removing chamber 40, and when a predetermined amount is reached, the manual on-off valve 46 is opened and the chip 1 moves from the chip outlet 47 to the chip introduction port of the bulk vehicle. Thrown into 48. However, even if such a dust removing chamber 40 is used, light dust cannot be sufficiently removed, and improvement thereof is strongly desired.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a dust removing device capable of sufficiently removing light dust in the form of powder or skin.

[0007]

In order to achieve the above-mentioned object, the present invention provides a dust removal device for taking out particles introduced laterally by pneumatic transportation downward while removing dust mixed with the particles. In the apparatus, a dust removing chamber having an interior formed in the particle dropping space, and a particle introducing port that is open to the upper side surface of the dust removing chamber and is in communication with a particle transporting pipe for pneumatically transporting the particles, A blower port that is open to the lower side of the dust removing chamber and communicates with a blower pipe that extends from the blower means, a suction port that opens to the ceiling surface of the dust removing chamber and that communicates with a suction pipe that extends from the suction device, and the dust. A first backing plate that hangs down from the ceiling surface of the removal chamber and partitions between the suction port and the grain introduction port; and the grain introduction that is gradually inclined downward from the side surface of the dust removal chamber toward the inside. The second partition that separates the mouth from the air blower The dust removing device provided with a plate first
A dust removing device according to claim 1, wherein the dust removing chamber according to claim 1 is divided into upper and lower chambers, and an upper primary dust removing chamber and a lower secondary dust removing chamber are connected by a communication pipe. A granule inlet opening to an upper part of the side surface of the primary dust removing chamber and communicating with a granule transport pipe for pneumatically transporting granules, and a first suction opening to a ceiling surface of the primary dust removing chamber and extending from a suction means. A first suction port communicating with the pipe, a first backing plate that hangs down from the ceiling surface of the primary dust removal chamber and partitions between the first suction port and the grain introduction port, and the secondary dust. An upper end communication port that opens to the ceiling surface of the removal chamber and communicates with the communication pipe, and a second suction port that opens to the upper side surface of the secondary dust removal chamber and communicates with a second suction pipe extending from the suction means. And the air blown from the air blower opening to the lower side of the secondary dust removing chamber. A blower opening communicated with the pipe, a second backing plate provided inwardly gradually from the side surface of the secondary dust removing chamber in a downward slope to partition the blower opening from the upper end communicating opening, and the primary A second aspect of the present invention is a dust removing device including a lower end communication port that is open to the floor of the dust removing chamber and communicates with the communication pipe, and a third pad plate that is provided below the communication pipe.

[0008]

In other words, the dust removing apparatus of the present invention has a granular material introducing port 41 which is opened at the upper side surface of the dust removing chamber 40 shown in FIG.
And a suction port 43 opening on the ceiling surface of the dust removing chamber 40,
In addition to the first pad 45 that hangs down from the ceiling surface of the dust removing chamber 40, a blower opening that opens to the lower portion of the side surface of the dust removing chamber and communicates with the blower pipe extending from the blower, and the side surface of the dust removing chamber. And a second pad plate that is provided so as to gradually incline inwardly from the inside to partition the space between the granule introduction port and the blower port. Therefore, according to the dust removing device of the present invention, similarly to the conventional example, the first padding plate is used to impact and disperse the particles and the dust to remove the dust, and further After the collision, it is dropped downward to collide with the second contact plate to be dispersed. The impact force at this time separates the dust adhering to or entangled with the particles. On the other hand, since a blower port is provided below the second pad and the air is blown from this blower port to suck the air from the suction port above the second pad plate, Ascending wind will flow near the back plate. As a result, the separated dust is sucked into the suction pipe through the suction port along with the rising wind. Since the dust is removed twice as described above, the dust is sufficiently removed and clogging of the pipe is eliminated.

Further, in another dust removing apparatus of the present invention, the dust removing chamber of the above apparatus is divided into an upper and lower two chambers, a primary dust removing chamber and a secondary dust removing chamber, and both removing chambers are connected by a communicating pipe. A third contact plate is provided in the lower part of the communication pipe, and the second dust removal chamber communicates with a second suction pipe which is opened at a second suction port in the upper part of the side surface thereof and extends from the suction means. The side surface of the secondary dust removing chamber and the second backing plate that communicates with the air blow pipe that extends from the air blower at the lower part of the side face and that divides the air blow port from the upper end communication port. It is provided with a gradual downward slope from the inside to the inside. Therefore, similarly to the conventional example, the first pad plate is used to impact and disperse the particles and dust to remove the dust, and further, the particles are dropped downward after the collision and the third pad is applied. The plate is collided and dispersed, and after this collision, it is further dropped and collided with the second pad plate to be dispersed. And
The impact force at this time separates the dust adhering to or entangled with the particles. On the other hand, since a blower port is provided below the second pad and the air is blown from the blower port to suck the air from the second suction port above the second pad plate. Ascending wind flows near the second pad. As a result, the separated dust is sucked into the suction pipe through the suction port along with the rising wind. Further, the third contact plate prevents the air blown from the granular material introduction port from entering the secondary dust removal chamber, and the airflow does not hinder the upward wind force in the secondary dust removal chamber. I have to. Since the dust is removed three times in this way, the dust is sufficiently removed and the pipe is not clogged.

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

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a longitudinal sectional view showing a main part of an embodiment of the present invention, and FIG. 2 is a lateral sectional view. In this dust removing device, a blower port 4 is opened at the lower part of the side surface of the dust removing chamber 3, a blower pipe 5 is communicated with the blower port 4, and a blower fan (not shown) is connected to the blower pipe 5. .. Further, a second contact plate 6 is attached to the inner peripheral surface of the dust removing chamber 3 in an inclined shape that gradually descends inward from the inner peripheral surface. A space is provided between the chip introduction port 41 and the blower port 4 at the upper portion of the side surface of the nozzle 3. This configuration is a feature of the present invention. Then, the second pad 6
Is formed in a porous manner, and each hole 6a is formed in such a size that the chip 1 can pass through. The center of the second pad plate 6 is supported by the support plate 7. Since the other parts are the same as those in FIG. 7, the same parts are designated by the same reference numerals.

Using the dust removing chamber 3, the dust 2 can be removed from the chip 1 which is the raw material of the synthetic fiber, for example, as follows. That is, first, the chip 1 that has flowed into the room from the chip introduction port 41 is collided with the first contact plate 45 and dispersed, and the impact force at this time causes the powder dust to adhere to the chip 1. 2 is separated from the chip 1, and the skin-like dust 2 entangled in the chip 1 is separated from the chip 1. The powder-like or skin-like dust 2 thus separated is sucked into the suction pipe 44 from the suction port 43 by the suction means.
The chip 1 falling downward after the collision is again collided with the second contact plate 6 to be dispersed, or is passed through the hole 6a formed in the second contact plate 6, and the chip 1 is again ejected from here. The powder-like or skin-like dust 2 is separated. On the other hand, air is blown into the room from the air outlet 4 opened below the second pad plate 6, and this air blows toward the suction port 43, so that rising air is generated in the room. Therefore, the dust 2 separated by the second contact plate 6 is sucked into the suction pipe 44 through the suction port 43 along with rising wind.

FIG. 3 is an external view showing a dust removing device in which the dust removing chamber is divided into two chambers, an upper chamber and a lower chamber, and FIG. In the figure, 10 is a primary dust removing chamber, a chip introduction port 41 is opened at the upper part of the side surface thereof, and a chip transport pipe 42 is communicated with this chip introduction port 41. Further, a first suction port 43 is opened on the ceiling surface, a first suction pipe 44 communicates with the first suction port 43, and a suction means (not shown) is connected to the first suction pipe 44. It is in communication. Further, the first pad plate 45 is provided at the center of the ceiling surface.
Is attached so as to hang down in a state of facing the chip introduction port 41, and the first pad plate 45 divides the space between the chip introduction port 41 and the suction port 43. Then, the lower end of the primary dust removing chamber 10 is open, and the lower end opening 16 communicates with the communication pipe 17.

A flange on the upper end of the communicating pipe 17 is fixed to a flange on the lower end of the primary dust removing chamber 10 by bolts and nuts (both not shown). The lower portion of the communication pipe 17 is fixed to the upper end opening 20a of the secondary dust removing chamber 20 by welding or the like. A cross-shaped support rod 18 is attached to the lower portion of the communication pipe 17, and the disc-shaped third contact plate 1 is mounted on the support rod 18.
9 is fixed (see FIG. 5).

As shown in FIG. 6, the secondary dust removing chamber 20 has a concavity-shaped projecting portion 20a integrally formed in the upper part thereof in the horizontal direction, and its tip is open. The second suction port 21 is formed by this opening. A second suction pipe 22 is connected to the second suction port 21, and a net 23 is attached to the tip opening of the second suction pipe 22. Then, suction means (not shown) is connected to the tip opening. Further, in a state where the second contact plate 25 is located below the lower end opening 17a of the communication pipe 17 on the inner peripheral surface of the secondary dust removing chamber 20, the second contact plate 25 gradually extends inward from the inner peripheral surface. It is installed in a downward slope. The second pad plate 25 is formed in a porous shape, and each hole 25a is formed in a size that allows the chip 1 to pass through. The center of the second contact plate 25 is supported by the support plate 26. A blower port 27 is opened below the second contact plate 25 in the lower side surface of the secondary dust removing chamber 20, and a blower pipe 28 communicates with the blower port 27 to blow air to the blower pipe 28. Juan 29 is connected.

Reference numeral 35 denotes a support frame, and two upper and lower support arms 36 extend laterally from the vertical frame of the support frame 35, and the secondary dust removing chamber 2 is provided in the support arm 36.
The supported part 37 attached to the peripheral side wall of 0 is placed.
As a result, the dust removing device is supported by the support frame 35. An automatic opening / closing valve 30 is set so that when a predetermined amount of the chip 1 is accumulated in the lower portion of the secondary dust removing chamber 20, the detector 31 detects this and opens the valve. Since the other parts are the same as those in FIG. 7, the same parts are designated by the same reference numerals.

The dust 2 mixed in the chip 1 can be removed using the above dust removing device, for example, as follows. That is, first, the chip 1 that has flowed into the room from the chip inlet 41 is made to collide with the first contact plate 45, so that the dust 2 is removed from the chip 1 in the same manner as in the above embodiment. Then, the chip 1 which drops downward after the above-mentioned collision is provided with a third contact plate 19 provided under the communication pipe 17.
The powdery dust 2 adhering to the chip 1 is again separated from the chip 1 by the impact force at this time, and the skin-like dust 2 entangled with the chip 1 is separated. Is separated from Chip 1. Further, the chip 1 which drops downward after colliding with the third pad plate 19 collides with the second pad plate 25 provided in the secondary dust removing chamber 20 to be dispersed, or the second pad plate 25.
If the chip 1 is passed through the hole 25a
Powder-like or skin-like dust 2 is separated from the above. On the other hand, air is blown into the room from the air outlet 27 opened below the second contact plate 25, and this air blows toward the second suction port 21, so that rising air is generated in the room. ing. Therefore, the separated dust 2 is sucked into the second suction pipe 22 from the second suction port 21 along with the rising wind. Further, since the air blown from the chip introduction port 41 is prevented from entering the secondary dust removing chamber 20 by the third contact plate 19, the rising wind generated by the air blown from the air blow port 27 is generated. Momentum is not obstructed by the air blown from the chip introduction port 41. in this way,
According to this device, the dust is removed once more than that in FIG. 1, and the blown air from the chip inlet 41 and the rising wind in the secondary dust removing chamber 20 do not interfere with each other. Therefore, the dust can be removed more than in the case of FIG. 1 and the clogging of the pipe can be eliminated.

By the way, when the dust removal capacities of the above two examples and the conventional example (FIG. 7) were examined and compared, the results shown in Table 1 below were obtained.

[0019]

[Table 1]

As is clear from Table 1 above, Example 1
Further, it is understood that Example 2 is excellent in dust removing ability, and in particular, Example 2 is particularly excellent.

The contact plates 6 and 25 may be porous or non-perforated. As in the above-mentioned embodiment, it is preferable to make holes in the contact plates 6 and 25 such that the chip 1 passes or does not pass therethrough. Further, the inclination angle θ of the contact plates 6 and 25 can be set appropriately. However, from the point of effect, 45 ° to 60 ° is preferable.

[0022]

As described above, according to the dust removing apparatus of the present invention, as in the conventional example, the first pad plate is used to impact and disperse the particles and dust to remove the dust, Furthermore, after the collision, the particles are dropped downward to the second pad,
Alternatively, the second contact plate and the third contact plate are collided and dispersed. The impact force at this time separates the dust adhering to or entangled with the particles. On the other hand, since the air is blown from the air outlet provided below the second pad and the air is sucked from the suction port above the second pad, the air of the second pad is A rising wind will flow nearby. As a result, the separated dust is sucked into the suction pipe through the suction port along with the rising wind. Further, in the case where the above-mentioned third pad is provided, the air blown from the granular material introduction port is prevented from entering the secondary dust removing chamber by this third pad, and the secondary air is blown by this air blow. It is designed so as not to impede the rising wind in the dust removal chamber. As described above, since the dust is removed twice or three times in consideration of the wind direction in the dust removing chamber, the dust can be sufficiently removed and the operation trouble due to the clogging of the pipe can be avoided. ..

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a main part of an embodiment of the present invention.

2 is a cross-sectional view of FIG.

FIG. 3 is an external view showing another embodiment of the present invention.

FIG. 4 is a cross-sectional view of a main part of FIG.

5 is a cross-sectional view taken along the line AA of FIG.

6 is a sectional view taken along line BB of FIG.

FIG. 7 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

 1 Chip 2 Dust 3 Dust Removal Chamber 4 Blower Port 5 Blower Pipe 6 Second Pad Plate 19 Third Pad Plate 41 Chip Inlet Port 42 Chip Transport Pipe 43 Suction Port 44 Suction Pipe 45 First Pad Plate

Claims (2)

[Claims] 1. A dust removing device for taking out particles, which are laterally introduced by pneumatic transportation, downward while removing dust mixed with the particles, the dust having an inside formed in a particle falling space. A removing chamber, a granular material inlet opening to the upper side surface of the dust removing chamber and communicating with a granular material transport pipe for pneumatically transporting the granular material, and a blowing pipe extending from the blowing means and opening to the lower side surface of the dust removing chamber. A suction port that communicates with a suction port that is open to the ceiling surface of the dust removal chamber and that communicates with a suction pipe that extends from the suction means, and the suction port and the granule introduction port that hang down from the ceiling surface of the dust removal chamber. And a second pad plate that partitions the space between the granular material introduction port and the air blowing port and is provided so as to incline gradually from the side surface of the dust removal chamber toward the inside. A dust removing device characterized by being provided. 2. The dust removing chamber according to claim 1, wherein
A dust removing device in which the upper primary dust removing chamber and the lower secondary dust removing chamber are communicated with each other by a communication pipe, and the granules are pneumatically transported by opening on the upper side surface of the primary dust removing chamber. And a first suction port, which is in communication with a granular transport pipe, which communicates with a first suction pipe which is opened on the ceiling surface of the primary dust removing chamber and extends from the suction means, and the primary dust removal. A first backing plate that hangs down from the ceiling surface of the chamber and partitions between the first suction port and the granule introduction port; and an upper end that opens to the ceiling surface of the secondary dust removal chamber and communicates with the communication pipe A communication port, a second suction port that is opened at an upper portion of a side surface of the secondary dust removing chamber and communicates with a second suction pipe that extends from the suction means, and a blowing unit that is opened at a lower side surface of the secondary dust removing chamber. Of the secondary dust removal chamber and the ventilation port communicating with the ventilation pipe extending from A second backing plate that is gradually inclined downward from the surface and partitions between the blower port and the upper end communication port, and opens to the floor surface of the primary dust removing chamber and communicates with the communication pipe. A dust removing device comprising a lower end communication port and a third pad plate provided below the communication pipe.