JPS6323955Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a particle inclusion sorting device that separates particle inclusions containing particles with different specific gravity into particles with high specific gravity and particles with low specific gravity. It depends.

(Prior technology) Conventionally, scraps from products made of different materials such as electric wires and electrical parts are crushed into pieces the size of a grain of rice, and then separated by wind and magnetic forces to reuse the scraps as valuable materials. It is being

(Problem that the invention aims to solve) However, with wind and magnetic sorting, it is not sufficient to separate particle contaminants such as metal particles such as copper, aluminum, and precious metals, and plastic particles into particles of each material. Ta.

(Means for solving the problems) In order to solve the above problems, this invention
A particle mixture containing particles with different specific gravity is supplied into a separation cylinder installed vertically or obliquely in a liquid storage tank, and the liquid in the liquid storage tank is returned to the liquid storage tank through the separation cylinder. , a sorting device that uses the liquid to separate particles with high specific gravity and particles with low specific gravity, wherein the separation tube has a cylindrical shape with a lower opening provided at the lower end and an upper opening provided at the upper end. A plurality of cone-shaped sorting cylinders each having a small diameter on the lower side are arranged vertically in the separation cylinder, and the separation cylinder is provided with a supply means for supplying particle inclusions into the separation cylinder, The structure is such that particles of high specific gravity are separated to the lower opening side, and particles of low specific gravity are separated to the upper opening side.

(Function) A predetermined amount of liquid in the liquid storage tank flows into the separation cylinder by a pump and is discharged to the upper opening side. The particle mixture supplied into the separation cylinder by the supply means is separated within the separation cylinder based on the difference in specific gravity, and particles with lower specific gravity are carried toward the upper opening side by the liquid flow and discharged. Particles with a large specific gravity settle in the separation cylinder against the liquid flow and are discharged from the lower opening. In addition, even if the specific gravity is large, fine particles or particles with so-called intermediate specific gravity are once carried to the upper opening side by the liquid flow, but are transferred to the lower opening side by the sorting action of the sorting cylinder installed in the separation cylinder. It is transported and discharged.

(Example) Next, an example of the present invention will be described based on the drawings. In this example, the scraps of electrical products such as electric wires and television receivers are crushed into pieces of about 5 mm in size and subjected to magnetic separation treatment, and then the resulting scraps are made up of non-magnetic metal particles M and plastic particles P. Particle inclusion A is subjected to a sorting process.

FIG. 1 shows the whole of a sorting device 1, and this sorting device 1 includes a liquid storage tank 2 storing water W,
The lower end is placed in the water storage W of this liquid storage tank 2, and the
The main parts are a separation cylinder 4 which is obliquely installed at the same time and whose upper end side is communicated with a pump 3, and a feeder 5 which supplies particle inclusions A into the separation cylinder 4. The liquid storage tank 2 has a substantially V-shaped longitudinal section, and falls metal particles M.
are collected at the bottom of the tank. Liquid storage tank 2
A return water tank 19 is arranged on one side of the tank, and a drainage tank 21 is arranged on the other side.

The separation cylinder 4 consists of a cylindrical middle body part 6 having approximately the same inner diameter D1, and has a lower opening 7 formed at its lower end, an upper opening 8 formed at its upper end, and the lower opening 7 It is placed underwater in the liquid storage tank 2. Separation tube 4
Inside, the upper end side is a large diameter part 10 that is equal to the inner diameter D1 of the middle body part 6, and the lower end side is a large diameter part 10 that is tapered downward and has an inner diameter D2.
A cone-shaped sorting tube 12 with a small diameter portion 11
are vertically arranged with a predetermined interval L1 between them. The ratio between the inner diameter D1 on the upper end side and the inner diameter D2 on the lower end side of the sorting cylinder 12 is determined by the specific gravity of the particle inclusions to be sorted;
It is determined as appropriate based on the suction flow rate of the pump 3, etc., but in this embodiment, it is approximately 5:3. The interval L1 at which the sorting tubes 12 are arranged is the same as the sorting tubes 12.
The cylinder length L2 is approximately the same as that of the cylinder length L2. A supply port 13 for supplying particle inclusions A is opened in the middle body 6 of the separation cylinder 4 and communicates with the lower end of the supply device 5 .

The feeder 5 has a cylindrical shape with a conical lower part, and a hopper 15 storing particle inclusions A is installed above the feeder 5. A rotary valve 16 is provided at the bottom of the hopper 15, and a predetermined amount of particle inclusions A is generated by driving rotation of the rotary valve 16.
can be supplied into the supply device 5. Further, the upper end of the supply device 5 is connected to a water return tank 19 via a water return pipe 25. The return water tank 19 is connected to the liquid storage tank 2 through a communication pipe 24, and water can flow therethrough.
Water in the water return tank 19 is supplied to the supply device 5 by a pump 26 installed in a water return pipe 25, and a predetermined water level is maintained in the supply device 5. A vibrating screen 20 that vibrates horizontally is provided above the water return tank 19 to allow water W accompanying the metal particles M to flow down into the water return tank 19. The liquid storage tank 2 is also provided with a bottom and a screw conveyor 17 extending from the side of the bottom to above the vibrating screen 20. The metal particles M can be conveyed onto a vibrating screen 20 disposed in a water return tank 19.

On the other hand, on the upper opening 8 side of the separation cylinder 4, there is a separation cylinder 4.
A drain pipe 9 with a small diameter is connected to the drain tank 21 for guiding the water and plastic particles P of low specific gravity onto the vibrating screen 22 of the drain tank 21. Pump 3 is installed in drain pipe 9.
is interposed so that the water W in the liquid storage tank 2 can fill the separation tube 4 and be discharged from the drain pipe 9.

The drain tank 21 is communicated with the liquid storage tank 2 through a communication pipe 23, so that the water in the drain tank 21 can flow into the liquid storage tank 2.

Next, the operation of the above-mentioned sorting device of this embodiment will be explained.

When the pump 3 is driven, the water W stored in the liquid storage tank 2 is sucked up, passes through the separation cylinder 4, is discharged onto the vibrating screen 22, flows into the drainage tank 21, and passes through the communication pipe 23 again. The liquid is refluxed to the liquid storage tank 2. When the pump 26 is driven, the water in the water return tank 19 flows into the supply device 5 through the water return pipe 25, flows into the separation cylinder 4 through the supply port 3 at the bottom of the supply device 5, and flows into the liquid storage tank 2. The water W is sucked up by the pump 3 and discharged into the drainage tank 21.

In the sorting device 1 in which the water W is circulated in this way, the particle contaminants A in the hopper 15 are supplied into the feeder 5 in fixed amounts by driving the rotary valve 16. The particle mixture A flows down through the water in the feeder 5 and is fed into the separation cylinder 4 through the feed port 13 .

Cone-shaped sorting tubes 12 as shown in FIG.
is the fastest flow S1 at the small diameter portion 11 of the sorting tube 12
Therefore, in the large diameter portion 10 of the sorting tube 12, the flow becomes slow S2, and each sorting tube 12 arranged
A vortex S3 is generated that circulates in the vertical direction with respect to the flow direction of the water W along the inner circumferential surface of the middle body part 6 between the two (see FIG. 2). Water W sucked by pump 3
When the amount is adjusted to an appropriate value, the plastic particles P with low specific gravity among the particle inclusions A entering the separation cylinder 4 from the supply port 13 are transported upward with the flow of water W, and are passed through the discharge pipe 9 to the vibrating screen. 22 and collected.

On the other hand, metal particles M having a specific weight such as copper fall through the separation cylinder 4 against the fastest flow S1 and are separated at the bottom of the liquid storage tank 2. Further, even if the specific gravity is large, thin particles or metal particles M having a so-called intermediate specific gravity such as aluminum particles, which have a specific gravity larger than the plastic particles M and smaller than the metal particles M, are separated from the supply port 13 by the fastest flow S1. Once inside the cylinder 4, it is carried upward. However, the separation cylinder 4 is arranged in an inclined manner, and between the interval L1, the slow flow S2
Therefore, the metal particles M move from the center of the separation cylinder 4 toward the inner peripheral surface of the middle body 6 while being carried by the water flow, enter the vortex S3 (see Fig. 2), and move inside the vortex S3. circulate. While circulating, the metal particles M become entangled with each other to form a lump, and when the metal particles M become large enough to fall against the fastest flow S1 of the small diameter section 11, the inner peripheral surface of the sorting cylinder 12 The liquid falls from above and is separated into the liquid storage tank 2.

The metal particles M thus separated in the liquid storage tank 2 are conveyed by the screw conveyor 17 and collected on the vibrating screen 20.

The metal particles M and plastic particles P, which have been sorted and collected, are conveyed from the vibrating screens 20 and 22 to the respective storage areas by means of conveyance means (not shown).

In this embodiment, an example in which metal particles M and plastic particles P are sorted out has been described, but the particles are not limited to this, and for example, metal particles such as copper particles and aluminum particles, and particles of vinyl resin and hard plastic particles. It can be widely applied to cases of particle inclusions with different specific gravities, such as inclusions. In this case, the fastest flow S1 is adjusted as appropriate by adjusting the amount of water sucked up by the pump 3 as appropriate.

In addition, in this embodiment, the separation tube 4 is shown as being tilted approximately 60 degrees from the horizontal plane, but this angle is not limited to 60 degrees, and it may be slanted or vertically oriented at an appropriate angle. be able to. In addition, in the above embodiment, water was used to separate particle contaminants into those with specific gravity and those with low specific gravity, but depending on the particle contaminants, a liquid with a predetermined specific gravity such as saline solution may be used. can.

(Effects of the Invention) This invention is a means for solving the above problem, so that particle inclusions with different specific gravity can be sorted into particles of high specific gravity and particles of low specific gravity. Note that each sorted particle is effectively reused.

In particular, in the present invention, a plurality of cone-shaped sorting tubes with a small diameter on the lower side are arranged in the separation tube that distributes liquid upward and sorts out particle inclusions.
Improved sorting of particles with intermediate specific gravity, which have poor sortability,
It has the feature of increasing the ability to sort out particle inclusions.

[Brief explanation of drawings]

The accompanying drawings show an embodiment of this invention, with FIG. 1 being a schematic overall view of the sorting device, and FIG. 2 being an enlarged cross-sectional view of the main part of the separation cylinder. DESCRIPTION OF SYMBOLS 1... Particle sorting device, 2... Liquid storage tank, 3... Pump, 4... Separation tube, 5... Supply device, 7... Lower opening, 8... Upper opening, 12... Sorting tube , A...
Particle inclusions, M...metal particles, P...plastic particles, W...water.

Claims (1)

[Scope of utility model registration request] A particle mixture containing particles with different specific gravity is supplied into a separation cylinder installed vertically or obliquely in a liquid storage tank, and the liquid in the liquid storage tank is returned to the liquid storage tank through the separation cylinder. , a sorting device that uses the liquid to separate particles with high specific gravity and particles with low specific gravity, wherein the separation tube has a cylindrical shape with a lower opening at the lower end and an upper opening at the upper end. A plurality of cone-shaped sorting cylinders each having a small diameter on the lower side are arranged vertically in the separation cylinder, and the separation cylinder is provided with a supply means for supplying particle inclusions into the separation cylinder, A particle inclusion sorting device characterized by having a structure in which particles with a specific gravity are separated into a lower opening side and particles with a small specific gravity are separated into an upper opening side.