JPH0614851Y2 - Floss separator - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention is a floss (tape) in which particles stored in a storage chamber are dropped from a discharge port by gravity, and air is blown up from below to the falling particles to mix them into the particles. The present invention relates to a floss separating device for separating a powdery material and a powdery material.

[0002]

2. Description of the Related Art FIG. 4 is a schematic sectional view showing a conventionally known floss separating device. Reference numeral 1 is a hopper for storing particles, 2 is a cylindrical device body, 3a and 3b are rotary valves. Inside the device body 2, a funnel-shaped inclined plate 4 and a conical baffle member 5 are provided. In this apparatus, the particles that have fallen from the hopper 1 through the rotary valve 3a into the apparatus main body 2 are collected in the central portion by the inclined plate 4 and are evenly dispersed by the baffle member 5 to the periphery of the apparatus main body 2. The air is blown up from the air outlet 6a to the falling granules to raise the floss, and the floss is discharged from the discharge port 6b.

[0003]

In the separating device having the above structure, the strength of the air blown from the air outlet 6a is limited, and it is difficult to further improve the separating efficiency. In addition, since the blown-up floss is remixed with the falling granules, the operating efficiency of the device was poor.

The present invention is a floss separating apparatus for dropping the granules stored in a storage chamber from a discharge port by gravity and blowing air from below onto the falling granules to separate the floss mixed in the granules. In, the purpose is to further improve the separation efficiency.

[0005]

[Means for Achieving the Object] The floss separating apparatus of the present invention drops the particles stored in the storage chamber by gravity from the outlet, and blows air from below onto the falling particles to mix them into the particles. It is a floss separation device that separates the floss that is being formed.The discharge port is formed in a flat elongated slit shape, and air is blown evenly downward to the particles falling in a thin film shape from the discharge port. It is characterized in that an accelerating means for accelerating the particles downward is provided.

[0006]

The difference in the inertial force of the drop between the granules and the floss mixed in the granules is larger when the particles are accelerated than when they are not accelerated. Moreover, since the inertial force of the granules is larger, even if the strength of the air stream blown up is increased, the granules fall against the air stream.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic sectional view showing a floss separating device of the present invention,
FIG. 2 is a view on arrow II in FIG. The floss separation device 10 is
Storage chamber 11, acceleration air chamber 12, blowing air chamber 1
3, the separation chamber 14, and the gate valve 15.
A hopper 22 is connected to the upper part of the storage chamber 11 via a rotary valve 21a, and a receiving hopper (not shown) is connected to the lower discharge port 14a of the separation chamber 14 via a rotary valve 21b. . As shown in FIG.
The floss separating device 10 has a shape elongated in the direction perpendicular to the paper surface in FIG.

The outlet 11a of the storage chamber 11 is formed in a slit shape between a vertical side wall 11b and a bottom wall 11c inclined downward. The gate valve 15 is slidably provided along the bottom wall 11c between the storage chamber 11 and the acceleration air chamber 12, and when the gate valve 15 is slid in the direction of arrow A, the discharge port 11a.
Is designed to be narrowed. The acceleration air chamber 12 has a jet port 12 that is opened immediately below the discharge port 11a.
a is formed. The ejection port 12a is formed so that air can be blown evenly downward to the particles falling in a thin film shape from the ejection port 11a. The side wall 11b of the storage chamber 11 extends further downward from the discharge port 11a to form an acceleration passage 16 with the acceleration air chamber 12. The side wall 11b is gradually curved from the vicinity of the ejection port 12a to the side opposite to the acceleration air chamber 12. The blow-up air chamber 13 has a bottom wall 13a formed with a jet port 13b opening to the separation chamber 14. A side wall 14b inclined toward the rotary valve 21b of the separation chamber 14 faces directly below the jet port 13b. 12b and 13c are air chambers for acceleration 1
2, a nozzle port for introducing air into the blowing air chamber 13. The separation chamber 14 is formed by the side wall 11b of the storage chamber 11,
The chamber is partitioned into two chambers, that is, the chamber 14c (on the discharge port 11a side) and the chamber 14d, and a floss discharge port 14e is formed at the upper part of the chamber 14d. Further, in the separation chamber 14, ionization devices 31a and 31b communicating with a blower unit 30 which is an air supply source are provided extending in the longitudinal direction (the direction perpendicular to the paper surface in FIG. 1). The ionizers 31a and 31b separate the air molecules passing through their internal passages into + ions and − ions. The ionizer 31a is provided in the lower part of the air chamber 13, and the ionizer 31b is the ionizer 31a.
Is provided outside the side wall of the separation chamber 14. Both of the ionizers 31a and 31b have a passage 1 for acceleration.
An internal passage opens at a position slightly away from the outlet of 6, and a perforated plate 32 is attached to the opening. The blower unit 30 includes a fan 33. The air supplied from the blower unit 30 is the ionization device 3
It is ionized while passing through 1a and 31b, and the perforated plate 32
It is designed to flow into the separation chamber 14 through the hole.

Next, the operation will be described. First, the granules are made to flow into the storage chamber 11 from the hopper 22 through the rotary valve 21a and stored therein. Next, the nozzle mouth 12
Air of a predetermined pressure is supplied from b and 13c to the acceleration air chamber 1
2. Introduce it into the blowing air chamber 13. Then, the gate valve 15 is adjusted according to the particle size of the particles in the storage chamber 11 so that the particles become a thin film as much as possible and fall from the discharge port 11a. The particles that have fallen from the discharge port 11a are accelerated downward in the acceleration passage 16 by the airflow that is ejected downward from the ejection port 12a, and fall inside the chamber 14c. On the other hand, connect the blower unit 30 to the power source, and
When 3 is started, the air pressurized by the fan 33 is ionized when passing through the ionizers 31a and 31b. The ionized air passes through the holes of the perforated plate 32, flows into the separation chamber 14, and comes into contact with the particles falling in the chamber 14c. The charged fluid and floss are neutralized by the contact with the ionized air, and are easily separated. Further, the air flow ejected from the ejection port 13b is the side wall 14b.
Collides with and becomes an updraft. The granules falling in the chamber 14c receive the airflow from the ejection port 13b, and the floss mixed in the particles is blown up by the airflow from the ejection port 13b to be carried to the chamber 14d side and discharged from the discharge port 14e. To be done. The granules from which the floss has been separated fall against the air flow from the jet port 13b, and are discharged from the discharge port 14a through the rotary valve 21b to the receiving hopper or the like.

Since the granules in the storage chamber 11 are discharged from the slit-shaped discharge port 11a in the form of a thin film, they are diffused widely in the longitudinal direction and uniformly rectified. Therefore, the particles falling in the acceleration passage 16 are uniformly accelerated by the air flow from the ejection port 12a. The difference in the inertial force of the drop between the granular material and the floss mixed in the granular material becomes larger by being accelerated than when not being accelerated. Moreover,
Since the inertial force of the particles is larger, the spout 13
Even if the strength of the air flow from b is increased, the particles fall against the air flow. Therefore, the floss is blown up by the stronger air flow from the ejection port 13b and is reliably separated from the granules. Moreover, since the charged particles and floss are easily separated by the air ionized by the ionizers 31a and 31b, the floss can be separated from the particles better.

The jet outlet 12a and its vicinity may be constructed as shown in FIG. In FIG. 3, the spout 12a
Like the discharge port 11a, is formed in an elongated slit shape in a plane, and the acceleration passage 16 extends vertically downward. According to this structure, the air blown out from the ejection port 12a can effectively accelerate the particles by the ejector effect. The air supply to the ionizers 31a and 31b is
Instead of the blower unit 30, the nozzle openings 12b, 1
It may be performed by branching from the air supply path to 3c with a valve.

[0012]

As described above, according to the floss separating apparatus of the present invention, the granules stored in the storage chamber 11 are discharged as a uniformly rectified thin film from the slit 11a in the shape of a slender plate. Since the falling of the particles is uniformly accelerated by the airflow from the ejection port 12a, and the floss is blown up and separated by the ascending airflow from the ejection port 13b,
It is possible to increase the difference in the inertial force of the drop between the granules and the floss, and accordingly to increase the ascending airflow from the ejection port 13b, so that the floss can be reliably separated from the granules with high efficiency.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing a floss separating device of the present invention.

FIG. 2 is a view on arrow II in FIG.

FIG. 3 is a schematic partial cross-sectional view showing another example of the floss separating device of the present invention.

FIG. 4 is a schematic cross-sectional view showing a conventionally commonly known floss separating device.

[Explanation of symbols]

 11 Storage Room 11a Discharge Port 12 Acceleration Air Chamber 12a, 13b Jet Port 13 Blowing Air Chamber 14 Separation Chamber

Claims (1)

[Scope of utility model registration request] 1. A floss separating device for dropping the granules stored in a storage chamber from a discharge port by gravity and blowing air from below to the falling granules to separate the floss mixed in the granules. , The discharge port is formed in the shape of an elongated slit in a plane, and an accelerating means for accelerating the particles downward by blowing air evenly downward to the particles falling in a thin film shape from the discharge port is provided. A floss separation device characterized in that