KR20100052603A - Air separation mill - Google Patents

Abstract

PURPOSE: A classifier is provided to separate metal and oxides by pulverizing metal oxides, to adjust the input of raw material and the pulverization of the raw material, and to improve productivity through the pulverization of the metal oxides. CONSTITUTION: A classifier comprises: a classification inlet(31) in which one or more metal oxides flows in the outer circumference of the inlet; a housing(30) including first and second outlets(32,33) in which the metal oxides are pulverized and the separated metal and oxides are respectively discharged; first, second, and third switching units which are installed in the housing and open/close the inlet and the outlets selectively; and an impeller which is installed inside the housing and is rotated using a first driving part which is installed in a cover member.

Description

Air separation mill

The present invention relates to a classifier, and more particularly, to a classifier that can separate a metal and an oxide by pulverizing a metal oxide.

In general, classification refers to the separation of solids according to chemical composition, particle diameter, shape, color, density, radioactivity, magnetic and electrostatic properties, and the classifiers for the separation of solids include cement, ceramic raw material and powder. In the powder grinding process of chemicals or foods, sludge, electro-minerals, metal oxides, etc., raw materials pulverized to a certain particle size are supplied, and fine powders having a certain standard particle size are selected. Screening to separate.

This classification is solved relatively simply in the powder having a large particle size, but in the case of fine or ultra fine powder, there are many technically difficult problems in obtaining a fine particle of a desired particle size applied to a purpose of use by a grinder or a screen.

That is, it is necessary to remove the paint larger than a predetermined particle size in order to improve the quality and to uniform the mixing. In addition, the filter media powder has a finer granularity such as an active plate for adsorption or a quartz powder for polishing, if it contains finer particles than necessary, and thus it may interfere with the filtration structure. It becomes an important cause and requires adjustment of the particle size.

Thus, classification adjustment is necessary to obtain a product having a particle size or particle size distribution that meets the requirements. The ultra-micron classifier is a mechanical centrifugal assisted classifier that has been completed by basic research and applied research in response to their demands, and can effectively separate the classification of difficult fine powder by screen.

On the other hand, the pulverizer for crushing such ultrafine particles include a jet crusher (cone crusher), hammer crusher (shredder) hammer mill, roll crusher and the like.

The micro classifier is to separate the raw materials pulverized by the pulverizer as described above to a desired particle size, and in constructing the rotor in Korean Utility Model Registration No. 222819, a plurality of cages are arranged on concentric circles about the axis of the motor. In the cage, there is disclosed a classifier that connects the feed pipes to collect the fine powder by varying the slit linear velocity of each cage while collecting the fine powder having different particle sizes for each cage.

Patent No. 10-003987 discloses an air classifier. The disclosed classifier discloses a technical configuration in which ultrafine particles are pulverized from a pulverized material by using a centrifugal force field by swinging the fine particles into air.

In addition, Korean Patent No. 10-0228922 discloses a cyclone electrostatic separator, and Patent No. 10-0046364 discloses an ultrafine metal ultrafine powder production method.

However, these classification devices have a problem that cannot separate materials having different specific gravity. In particular, there is a problem in that the oxide and the metal cannot be separated by crushing the metal oxide, for example, the metal oxide.

The present invention has been made in view of the above-described problems, and an object thereof is to provide a classification apparatus that can separate oxides and metals by pulverizing a metal oxide that is difficult to break.

Another object of the present invention is to provide a classification apparatus that can simplify the manufacturing process according to the pulverization and separation of the metal, and can improve the productivity.

Classification apparatus for achieving the above object

A housing having a classification inlet through which at least one metal oxide flows into the outer circumferential surface, first and second outlets through which the introduced metal oxide is pulverized and discharged from the separated metal and oxide, respectively; First, second and third opening and closing means for selectively opening and closing the first and second outlets;

It is characterized in that it is provided in the housing and the impeller is rotated by the first drive unit installed in the cover member.

In the present invention, the impeller is provided in the lower portion of the housing is rotated by the second driving unit and has a second floating impeller surrounding the first floating impeller.

Classification apparatus according to the present invention for achieving the above object is

A housing having a classification inlet through which at least one metal oxide flows into the outer circumferential surface, first and second outlets through which the separated metal oxide is pulverized and the metals and oxides are discharged, respectively; First, second and third opening and closing means for selectively opening and closing the second outlet;

A classification unit having an impeller which is installed inside the housing and rotated by a first driving unit installed in the cover member;

Raw material input means for inputting the raw material for pulverized grinding into the classification inlet of the classification unit;

A first cyclone unit which separates the particle group pulverized from the classifier unit and discharged to the first discharge port;

A second cyclone unit which separates the group of metal particles which are pulverized from the classifier unit and discharged to the second discharge port;

A dust collecting unit for collecting ultrafine particles separated from the first and second cyclone units; And a blower unit connected to the dust collecting unit to smoothly flow the raw material from the classification unit to the dust collector unit.

In the classification apparatus according to the present invention, the metal oxide may be pulverized to separate the oxide and the metal, and the input and crushing of the raw material may be separated and adjusted. In addition, by pulverizing the metal oxide it is possible to improve the productivity of the pulverized metal and oxide.

The pulverizing apparatus of the present invention is capable of separating the oxide and the metal by pulverizing the metal oxide, an example of which is shown in FIGS. 1 and 2.

Referring to the drawings, the pulverizing device 10 according to the present invention is a classification inlet 31 through which the oxide is introduced by the oxide supply means 20, and the metal oxide supplied through the classification inlet is pulverized so that the oxide and the metal, respectively The housing 30 having the first and second discharge ports 32 and 33 discharged therefrom, and the classification inlet 31 and the first and second discharge ports 32 and 33 respectively installed in the housing 30 to open and close the housing 30. A classification unit 40 having first, second, third opening and closing means 35, 36, 37, and an impeller 42 which is installed inside the housing and is rotated by a drive part 41 installed in the cover member. ).

And a first cyclone unit 50 that separates the particle group that is pulverized from the classifier unit and discharged to the first outlet 32, and is pulverized from the classifier unit 40 and discharged to the second outlet 33. The second cyclone unit 60 for separating the group of metal particles, and the dust collection unit 70 and the dust collection unit 70 for collecting ultra-fine particles separated from the first and second cyclone units 50 and 60. It is connected with the blower unit 80 to enable the raw material to flow smoothly from the classification unit to the dust collector unit.

The classification apparatus according to the present invention configured as described above will be described in more detail for each component as follows.

As shown in FIGS. 1 to 3, the classification unit 40 may include an inlet 31 through which the metal oxide supplied by the oxide supply means 20 for grinding to the outer circumferential surface and an inlet 31 for discharging the ground metal. It has a housing 30 in which two outlets 33 are formed. The housing 30 is formed in the shape of a cylinder having an opening having a flange portion at the upper and lower edges thereof. The upper side of the housing 30 is coupled to the housing is coupled to the cover member 34 is formed with a first discharge port 32 for discharging the pulverized oxide.

On the other hand, it is installed in the housing 30, it is provided on the rotating shaft (41a) supported by the housing 30 and has impellers 42 driven by the drive unit 41. This impeller 42 is equipped with the 1st floating impeller 42a and the 2nd floating impeller 42b which surrounds this 1st floating impeller 42a. Here, a guide vane may be installed at an upper side of the first and second floating impellers 42a and 42b, and two motors may be driven to drive the first and second floating impellers 42a and 42b, respectively. It may include.

The first, second and third opening and closing means 35, 36 and 37 have substantially the same structure, and the shutters 35a, 36a and 37a for opening and closing the inlet and the outlet are installed in the housing. Cylinders 35b, 36b, 37b for advancing the shutter forward and backward are provided. The first, second and third opening and closing means is not limited to the above-described embodiment, and may be any structure as long as the classifying inlet 31 and the first and second outlets 32 and 33 can be opened and closed.

The oxide supply means 20 is for supplying a metal oxide for pulverizing and separating the housing 30 of the classification unit 40, the first hopper 21, the metal oxide is stored and the first hopper 21 And a screw feeder 23 for feeding the metal oxide, connected by the outlet 22 and the connection pipe 22. Here, the metal oxide supply apparatus is not limited to the above-described embodiment and may be any structure as long as it can supply the metal oxide to the classification unit 40.

The first outlet 32 installed in the cover member 34 separates the first cyclone unit for collecting the fine particles separated by the impeller 42, that is, the fine particle group oxide separated from the classification unit 40. 50 and the first duct 51 are connected, and the first cyclone unit 50 is connected by the dust collecting unit 70 and the second duct 71 for collecting the separated ultra-fine particles. Here, the dust collecting unit 70 is further provided with a blower unit 80 to smoothly flow the raw material from the classification unit 40 to the dust collector 70 as described above.

In the second outlet 33 formed in the housing 30, the second cyclone unit 60 is formed by the third duct 61 to collect the metal powder that is pulverized by the classification unit 40. ). The second cyclone unit is connected to the dust collector 70 like the first cyclone unit 50.

On the other hand, the first and second cyclone unit (50, 60) is a vertical tube is installed inside to generate a vortex inside the main body and rotates by introducing air between the outer peripheral surface of the vertical tube and the inner peripheral surface of the main body It is preferable to make it possible to separate the powder piggybacked in the air by reducing the speed of the air.

In addition, the lower end portions of the first and second cyclone units 50 and 60 and the dust collecting unit 70 may further include means for resupplying relatively large particles to the grinder, that is, screw feeders.

As described above, in the classification system 10 according to the present invention, the oxide supply means 20 in the state in which the shutter 35a of the first opening / closing means 35 for blocking the classification inlet 31 is opened by the cylinder 35b. Oxide is supplied into the housing 30 through the inlet 31. In this state, the classification inlet 31 is closed, and the first and second outlets 32 and 33 are closed by the second and third opening and closing means, or the shutter of the second opening and closing means is operated by the second cylinder and opened. As the driving unit 41 is operated to rotate the impeller 42, that is, the first and second subsidiary impellers 42a and 42b, the metal oxide is pulverized to separate the product and the metal.

The primary floating impeller 42a floats the raw material introduced into the inlet 31 toward the secondary floating impeller 42b. At this time, since the primary floating impeller 42a has a relatively large contact with the raw material, it is preferable to make the wear resistance large and relatively thick.

In this state, the second floating impeller 42b does not rotate at high speed, but finely pulverized oxide particles and air are discharged to the first discharge port 32, whereby ultra-fine particles are released by the first cyclone unit. It is stored separately from the above.

When the metal oxide in the housing is sufficiently pulverized and the metal is separated, the second outlet is opened by the third opening and closing means, and the fine metal discharged through this is organized in the air and transported by the second cyclo unit. Stored separately from air.

As described above, the classification inlet is opened and the metal oxide to be crushed is introduced.

As described above, the classification apparatus according to the present invention may separate the oxide and the metal by pulverizing the metal oxide.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

According to the present invention, various materials such as various metal oxides, nonmetal oxides and plastics can be finely separated, and the metal oxides can be separated into metals and oxides at the same time as grinding, thereby improving productivity.

1 is a side view showing a classification apparatus according to the present invention,

Figure 2 is a perspective view showing an extract the classification unit shown in Figure 1,

3 is a cross-sectional view of the classification unit according to the present invention.

Claims (3)

A housing having a classification inlet through which at least one metal oxide flows into the outer circumferential surface, first and second outlets through which the introduced metal oxide is pulverized and the metal and oxide separated are discharged; First, second and third opening and closing means for selectively opening and closing the second outlet; The classifier is installed in the housing, characterized in that provided with an impeller rotated by the first drive unit installed in the cover member. The method of claim 1, The impeller is provided in the lower portion of the housing classifying device, characterized in that it is provided with a second floating impeller that is rotated by the second driving unit surrounding the first floating impeller. A housing having an inlet through which at least one metal oxide flows into the outer circumferential surface, first and second outlets through which the inflow metal oxide is pulverized and the metal and oxide separated are discharged; A classification unit having first, second and third opening and closing means for selectively opening and closing the second discharge port, an impeller rotated by the first driving unit installed in the cover member and installed inside the housing; Raw material input means for inputting the raw material for pulverized grinding into the classification inlet of the classifier unit; A first cyclone unit which separates the particle group which is separated from the classifier unit and discharged to the first discharge port; A second cyclone unit which separates the group of metal particles which are separated from the classifier unit and discharged to the second discharge port; A dust collecting unit for collecting ultrafine particles separated from the first and second cyclone units; And a blower unit connected to the dust collecting unit so as to smoothly flow the raw material from the classification unit to the dust collector unit.

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