KR102312835B1 - Horizontal type ultra fine grinding apparatus - Google Patents

Abstract

The present invention relates to a horizontal ultrafine grinding device. The horizontal ultrafine grinding device, according to one embodiment of the present invention, comprises: a horizontal chamber including a grinding air inflow port through which grinding air is supplied from the outside, a grinding raw material inlet port through which grinding raw materials are introduced from the outside, and a grinding chamber causing mutual collision between grinding raw materials while moving the grinding raw materials introduced according to the high-speed swirling air flow so as to grind the grinding raw materials into fine particles of a predetermined size; a grinding raw material supply unit connected to the grinding raw material inlet port and introducing the grinding raw materials supplied from the outside into the horizontal chamber; and a grinding air supply unit connected to the grinding air inflow port, and supplying compressed grinding air into the horizontal chamber. According to the present invention, the horizontal ultrafine grinding device has the effect of dramatically increasing grinding performance.

Description

Horizontal type ultra-fine grinding device {HORIZONTAL TYPE ULTRA FINE GRINDING APPARATUS}

Embodiments of the present invention relate to a horizontal ultrafine pulverizer.

Grinding refers to a mechanical operation that applies an external force to a material to subdivide it into smaller sizes and increase the surface area.

According to the size of the crushed particles, it is divided into coarse crushing, medium crushing, crushing, fine crushing, and ultra fine crushing.

The stress applied to the material during pulverization includes compressive force, impact force, shear force, friction force, cutting force, etc. It is rare that a single force is applied, and various forces are complex and act on the material to be pulverized at the same time to achieve pulverization.

The horizontal ultra-fine pulverization device is called an air-jet mill or a jet mill, and high-pressure air or a gas such as nitrogen is sprayed at supersonic speed through a nozzle to cause a collision between the powders. It refers to a device that pulverizes to a fine size.

Techniques related to ultra-fine pulverization are applied and widely used in various technical fields, and a technique for ultra-fine pulverization of particles to an ultra-fine size and a technique for selecting and discharging ultra-fine pulverized powder are important.

As a prior art related to the present invention, Republic of Korea Patent Publication No. 10-0955511 (April 30, 2010, published date) discloses a technology related to a jet mill. However, in the case of the jet mill of the prior literature, it is a method of having a blade for blocking the gap in the centrifugal rotor, and only has a function of selecting and discharging fine powder below a certain particle size to the outside, improving the grinding effect or classifying the particles by size Therefore, it does not provide any information on the contents of the improvement so that there is no need for separate raw material classification by separately extracting fine particles and large particles.

Republic of Korea Patent Publication No. 10-0955511 (2010.04.30, announcement date)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a horizontal type ultrafine pulverizer capable of improving the pulverization effect by improving the structure of the grinding nozzle through which high-pressure gas is supplied into the horizontal chamber.

Another object of the present invention is to form a plurality of outlets in a horizontal chamber to extract particles having a target particle size as well as large particles larger than particles through independent paths, eliminating the need for separate raw material classification. An object of the present invention is to provide a horizontal ultrafine pulverizer.

Another object of the present invention is to provide a horizontal ultra-fine pulverizer capable of cooling the chamber to cryogenic temperature so as to maximize the pulverization effect during the pulverization process by colliding with each other in the horizontal chamber.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. Moreover, it will be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

A horizontal ultrafine powder grinding device according to an embodiment of the present invention includes a grinding air inlet that receives grinding air from the outside, a grinding raw material inlet that receives grinding raw materials from the outside, and a high-speed swirling air flow for grinding raw materials. a horizontal chamber having a grinding chamber that moves and causes a mutual collision between the grinding raw materials and grinds them into fine particles of a set size; a grinding raw material supply unit connected to the grinding raw material inlet and inputting the grinding raw material supplied from the outside into the inside of the horizontal chamber; and a grinding air supply unit connected to the grinding air inlet and supplying grinding air compressed to a set pressure into the horizontal chamber.

The horizontal chamber may include: a chamber body sealing the outside of the grinding chamber except for the grinding air inlet and the grinding raw material inlet; a chamber upper body that is hermetically formed on an upper portion of the chamber body; and a chamber lower body hermetically formed at a lower portion of the chamber body.

The chamber body has a cylindrical shape having a diameter greater than a height, and the chamber upper body includes a dome-shaped cap with an inner central portion protruding more convexly upward than an upper end height of the chamber body, and the chamber lower body includes: A flat plate having an overall flat shape may be provided corresponding to the height of the lower end of the chamber body.

The horizontal chamber further includes a first discharge pipe for discharging particles pulverized to a set size in the crushing chamber to the outside of the crushing chamber; It is positioned and formed through the crushing chamber, the outlet of the first discharge pipe is formed at a position that extends a predetermined length vertically downward than the flat plate, and the inlet of the first discharge pipe has a shape in which the cross-section is reduced as it goes down. and a portion other than the inlet portion of the first discharge tube may be a straight tube shape having a constant diameter.

The horizontal chamber further includes a second discharge pipe for separately extracting large particles having a particle size larger than that of the fine particles in the crushing chamber and discharging them to the outside of the crushing chamber, wherein the inlet of the second discharge pipe includes: The inlet of the first discharge pipe is located close to the edge of the flat plate at a predetermined distance from the inner center of the flat plate, and is formed through the grinding chamber, and the outlet of the second discharge pipe is the first discharge pipe. It is formed to have a shorter length than the outlet portion of the first discharge tube in a direction parallel to the outlet portion, and the inlet portion of the second discharge tube has a shape in which the cross-section is reduced toward the bottom, except for the inlet portion of the second discharge tube. The remaining portion may be a straight tube shape having a constant diameter, and the inlet portion of the second discharge tube may have a smaller cross-section than the inlet portion of the first discharge tube.

The grinding raw material inlet is formed through the grinding chamber from one side of the chamber upper body, and the grinding air inlet is provided with a plurality of grinding air inlets spaced apart in the circumferential direction at a predetermined distance along the circumferential surface of the chamber body, each It may be formed through the grinding chamber in a horizontal direction.

The pulverized raw material supply unit may include: a feed hopper for storing pulverized raw materials and supplying pulverized raw materials to the outlet in a set amount; and a feeding tube having one side communicating with the outlet of the feed hopper, receiving feeding air from the outside and supplying the crushed material to the crushing chamber, wherein the feeding tube has an inlet through which the feeding air is injected. It is formed higher than the outlet side connected to the inlet, and may be formed to be inclined downward to have a predetermined inclination angle from the inlet side to the outlet side.

The grinding air supply unit may include: an injection pipe arranged horizontally to correspond to the center of the height of the chamber body and into which high-pressure compressed grinding air is injected from the outside; a ring-type accommodation tube having the same height as the injection tube and connected to an outlet side and one side of the injection tube, the ring-type accommodation tube being formed to surround the outer circumference of the chamber body in a circumferential direction to receive the grinding air supplied from the injection tube; and a grinding nozzle connected to communicate between the ring-shaped accommodation tube and the ground inlet, and for high-pressure jetting the grinding air accommodated in the ring-type accommodation tube into the grinding chamber.

The grinding nozzles are provided in plurality to correspond to the number of the grinding air inlets provided in plurality, spaced apart in the circumferential direction along the circumferential surface of the chamber body, and the grinding nozzles include a first gap portion having a predetermined size between the grinding nozzles. and disposed radially in the direction of the center of the chamber body, an inlet of the grinding nozzle communicates with the ring-shaped receiving tube, an outlet of the grinding nozzle is connected to the grinding air inlet, and an inlet and an outlet of the grinding nozzle The body part of the grinding nozzle formed between the parts may include a cone-shaped flow path whose cross section is reduced from the inlet to the outlet.

It further comprises a; chamber cryogenic cooling unit for cooling the temperature of the horizontal chamber to a cryogenic temperature, the chamber cryogenic cooling unit, a liquid nitrogen supply pipe through which liquid nitrogen is supplied from the outside; a liquid nitrogen flowing part having one end connected to the liquid nitrogen supply pipe, formed to surround a circumferential surface of the cylindrical chamber body in a coil shape, and cooling the chamber body to a cryogenic temperature using the supplied liquid nitrogen; and a liquid nitrogen discharge pipe connected to the other end of the liquid nitrogen flow unit and discharging liquid nitrogen after cooling of the chamber body to the outside, wherein the liquid nitrogen supply pipe and the liquid nitrogen discharge pipe are injected into the grinding air supply unit The first liquid nitrogen flow part is arranged to extend in parallel to each other in the opposite direction to the tube, and is disposed to surround the upper circumferential surface of the chamber body in a coil shape based on the height of the grinding air inlet, and to flow liquid nitrogen liquid nitrogen flow tube; and a second liquid nitrogen flow pipe arranged to surround a lower circumferential surface of the chamber body in a coil shape based on the height of the grinding air inlet and flowing liquid nitrogen; and a joint pipe connecting between the first liquid nitrogen flow pipe and the second liquid nitrogen flow pipe, wherein the joint pipe includes a second spacer part by a predetermined distance outside the ring-type accommodation pipe of the grinding air supply part. A first horizontal extension pipe horizontally connected so as to be positioned above the ring-shaped accommodation pipe is connected between one end of the fitting pipe and the outlet of the first liquid nitrogen flow pipe, the other end of the fitting pipe and the second A second horizontally extending pipe horizontally connected to be positioned below the ring-shaped accommodation pipe may be connected between the inlets of the liquid nitrogen flow pipe, and the joint pipe may be located on the opposite side of the injection pipe of the grinding air supply unit.

According to the present invention, high-pressure grinding air (eg, compressed air, nitrogen, etc.) is ejected into the horizontal chamber through the grinding nozzle, and a high-speed swirling air flow is generated in the horizontal chamber. The pulverized raw material is fed into a horizontal chamber through a feed hopper and a feeding tube. The input pulverized raw material flows along the high-speed swirling air flow and is moved to the center of the horizontal chamber by centrifugal force. can be

In addition, according to the present invention, it is possible to improve the grinding effect by improving the structure of the grinding nozzle to which the high-pressure gas is supplied into the horizontal chamber to a structure for increasing the flow rate.

In addition, according to the present invention, a first discharge pipe located at the center of the lower end of the horizontal chamber through which fine particles pulverized into ultrafine powder are discharged, and a second discharge pipe through which large particles that are not pulverized into ultrafine powder are discharged separately from the first discharge pipe By providing the tube at the same time, it is possible to extract the particulates and the large particles through independent paths. Accordingly, there is an advantage in that there is no need for separate raw material classification.

In addition, according to the present invention, the outside of the horizontal chamber may be formed to be wrapped with a liquid nitrogen pipe, and if necessary, the outside of the horizontal chamber may be cooled to a cryogenic temperature (eg, -196°C, etc.). Accordingly, when the pulverized raw materials collide with each other in the horizontal chamber to be pulverized, the freeze pulverization effect is additionally applied, thereby greatly improving pulverization performance.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a perspective view schematically showing a horizontal ultrafine pulverization apparatus according to a first embodiment of the present invention.
2 is a schematic front view of a horizontal ultrafine pulverizing apparatus according to a first embodiment of the present invention;
3 and 4 are both side views schematically showing the horizontal type ultra-fine pulverizing apparatus according to the first embodiment of the present invention.
5 is a plan view schematically illustrating a horizontal ultrafine pulverization apparatus according to a first embodiment of the present invention.
6 is a rear view schematically illustrating a horizontal ultrafine pulverization apparatus according to a first embodiment of the present invention.
7 and 8 are a partial perspective view and a plan view showing the internal structure of the horizontal ultrafine pulverizer according to the first embodiment of the present invention.
Figure 9 is a side view showing the structure of the first and second discharge pipes of the horizontal ultrafine pulverizer according to the first embodiment of the present invention.
10 is a perspective view schematically illustrating a horizontal ultrafine pulverization apparatus according to a second embodiment of the present invention.
11 is a schematic front view of a horizontal ultrafine pulverization apparatus according to a second embodiment of the present invention.
12 and 13 are both side views schematically showing a horizontal ultrafine pulverizer according to a second embodiment of the present invention.
14 is a plan view schematically illustrating a horizontal ultrafine pulverization apparatus according to a second embodiment of the present invention.
15 is a rear view schematically showing a horizontal ultrafine pulverizer according to a second embodiment of the present invention.

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Although the first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from other components, and unless otherwise stated, the first component may be the second component, of course.

In the following, that an arbitrary component is disposed on the "upper (or lower)" of a component or "upper (or below)" of a component means that any component is disposed in contact with the upper surface (or lower surface) of the component. Furthermore, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

Also, when it is described that a component is "connected", "coupled" or "connected" to another component, the components may be directly connected or connected to each other, but other components are "interposed" between each component. It is to be understood that “or, each component may be “connected,” “coupled,” or “connected” through another component.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Hereinafter, with reference to the accompanying drawings with respect to the horizontal ultrafine pulverizer according to an embodiment of the present invention will be described in detail.

Horizontal ultrafine powder grinding device according to the first embodiment

In the drawings, FIG. 1 is a perspective view schematically illustrating a horizontal ultrafine powder grinding apparatus according to a first embodiment of the present invention, and FIG. It is a front view, and FIGS. 3 and 4 are both side views schematically showing the horizontal type ultra-fine powder grinding apparatus according to the first embodiment of the present invention. And FIG. 5 is a plan view schematically showing a horizontal ultrafine powder grinding device according to a first embodiment of the present invention, and FIG. 6 is a rear view schematically showing a horizontal ultrafine powder grinding device according to a first embodiment of the present invention. 7 and 8 are a partial perspective view and a plan view showing the internal structure of a horizontal ultrafine powder grinding apparatus according to a first embodiment of the present invention, and FIG. 9 is a horizontal ultrafine powder according to the first embodiment of the present invention. It is a side view showing the structure of the first and second discharge pipes of the crushing device.

As shown, the horizontal ultrafine powder grinding apparatus 1 according to the first embodiment of the present invention includes a horizontal chamber 100 , a grinding raw material supply unit 200 , and a grinding air supply unit 300 .

The horizontal chamber 100 includes a grinding chamber 113 , and further includes a grinding raw material inlet 140 , and a grinding air inlet 150 .

The grinding air inlet 150 refers to a hole-shaped portion penetrating the inside/outside of the chamber body 110 to receive grinding air (A, see FIG. 2 ) from the outside.

The pulverized raw material inlet 140 refers to a hole-shaped portion penetrating the inside/outside of the chamber body 110 to receive the pulverized raw material (G, see FIG. 2 ) from the outside.

When high-pressure gas, that is, grinding air (A, see FIG. 2 ) is supplied into the chamber body 110 through the grinding air inlet 150 , a high-speed swirling airflow is generated in the grinding chamber 113 . When the pulverized raw material (G, see FIG. 2) is input through the pulverized raw material input port 140, the input pulverized raw material (G, refer to FIG. 2) is rotated and moved at high speed in the set direction in the pulverizing chamber 113, and there is no collision. provoked Accordingly, the pulverized raw material (G, see FIG. 2) may be pulverized into fine particles of a set size, that is, in the form of ultrafine powder. This principle uses the principle of a jet mill that uses high-pressure air or a gas such as nitrogen as grinding air, and sprays the grinding air at supersonic speed to cause collisions between powders and grinds them into ultra-fine powders, usually Those skilled in the art can use it by slightly changing the structure and shape of the grinding chamber.

The grinding raw material supply unit 200 is connected to the grinding raw material inlet 140 located in the chamber upper body 120, and serves to inject the grinding raw material G supplied from the outside into the horizontal chamber 100. do.

The grinding air supply unit 300 is connected through a plurality of grinding air inlets 150 and the grinding nozzle 400 positioned on the circumferential surface 113 of the chamber body 110, and the grinding air compressed to a set pressure (A) It serves to supply the inside of the horizontal chamber (100).

The grinding air supply unit 300 jets high-pressure grinding air (A, see FIG. 2) through the grinding chamber 400 at high speed, and the grinding raw material (G) injected into the grinding chamber 113 inside the horizontal chamber 100 They collide with each other to achieve ultra-fine pulverization.

For example, a jet stream jetted into the grinding chamber 113 inside the chamber body 110 may generate a high-speed swirling airflow in the cylindrically sealed grinding chamber 113 . At this time, the pulverized raw material (G, see FIG. 2) may be introduced into the pulverizing chamber 113 inside the chamber body 110 through the pulverized raw material inlet 140 on the principle of vacuum suction.

The pulverized raw material (G, see FIG. 2 ) moves toward the inner center of the chamber body 110 by centrifugal force, and may continuously collide with each other while moving to be pulverized into a target ultrafine powder. Accordingly, it may be discharged to the outside through the first discharge pipe 160 located in the center of the chamber lower body (130).

First, the horizontal chamber 100 will be described in detail.

The horizontal chamber 100 includes a chamber body 110 , a chamber upper body 120 , and a chamber lower body 130 .

The chamber body 110 is formed to seal the outside of the grinding chamber 113 except for the grinding air inlet 150 and the grinding raw material inlet 140 . For example, the chamber body 110 may have a cylindrical shape having a diameter greater than a height (see FIG. 1 ).

The chamber upper body 120 is hermetically formed on the upper portion of the chamber body 110 , and the chamber lower body 130 is hermetically formed on the lower portion of the chamber body 110 .

For example, the chamber upper body 120 may include a dome-shaped cap 121 in which an inner central portion of the chamber body 110 protrudes upward more convexly than the upper end of the chamber body 110 . Accordingly, even when the internal pressure of the crushing chamber 113 is high, the durability of the chamber body 110 can be reinforced, and the crushing raw material inlet 140 is stably inserted into the chamber body 110 at high speed in the center direction. It moves along the swirling airflow of the

The chamber lower body 130 may include a flat plate 131 having an overall flat shape corresponding to the height of the lower end of the chamber body 110 . The fine particles in the form of ultrafine powder pulverized to a set size are discharged to the outside through a discharge pipe located in the inner center of the chamber lower body 130 , that is, the first discharge pipe 160 , and the first discharge pipe 60 is 1 flat. It may be installed vertically downward from the center of the plate 131 . Accordingly, the discharging of the pulverized particles from the pulverizing chamber 113 provided inside the chamber body 110 may be facilitated.

The horizontal chamber 100 further includes a first discharge pipe 160 for discharging particles pulverized to a predetermined size in the crushing chamber 113 to the outside of the crushing chamber 113 .

For example, the inlet 161 of the first discharge pipe 160 may be located in the inner center of the flat plate 131 and formed through the grinding chamber 113 . In addition, the outlet portion 163 of the first discharge pipe 160 may be formed at a position extending vertically downward by a predetermined length from the flat plate 131 .

In this case, the inlet 161 of the first discharge pipe 160 may have a bell mouth shape in which the cross-section is reduced toward the bottom. Accordingly, the fine particles moved to the center of the grinding chamber 113 , that is, to the inner center of the flat plate 131 , and pulverized in the form of ultra-fine particles can be smoothly discharged through the first discharge pipe 160 , and have a predetermined size. It has the advantage of being able to easily extract the fine particles of

In addition, in the first discharge pipe 160 , the remaining portion except for the chamber lower body 130 , more specifically, the inlet portion 161 connected to the center of the flat plate 131 has a straight tube shape having a constant diameter. can Accordingly, the particulates discharged through the inlet 161 of the first discharge pipe 160 can be extracted only in a predetermined direction through the outlet 163 of the first discharge pipe 160, and are transferred to another external storage tank. can be returned accurately.

On the other hand, the horizontal chamber 100 further includes a second discharge pipe 170 for separately extracting large particles having a larger particle size than the fine particles in the grinding chamber 113 and discharging them to the outside of the grinding chamber 113 . .

The second discharge pipe 170 is located in the center of the chamber lower body 130 and, unlike the first discharge pipe 160 that discharges ultra-finely pulverized particles to a set size, separate large particles having a larger particle size than the particles are extracted. It serves to discharge to the outside of the grinding chamber (113). In this way, by using the single horizontal chamber 100, not only fine particle powder of a target set size, but also large particles having a particle size larger than the particle size can be individually extracted, so there is no need for a separate crushing raw material classification operation. can have

For example, the inlet 171 of the second discharge pipe 170 is flat at a predetermined distance from the inner center of the flat plate 131 where the inlet 161 of the first discharge pipe 160 is located. It is located close to the edge of the plate 131 and may be formed through the grinding chamber 113 .

In addition, the outlet 173 of the second discharge pipe 170 is shorter than the outlet 163 of the first discharge pipe 160 in a direction parallel to the outlet 163 of the first discharge pipe 160 . It may be formed to have a length.

In addition, the inlet portion 171 of the second discharge pipe 170 has a shape in which the cross-section is reduced toward the bottom, and the rest of the second discharge pipe 170 except for the inlet portion 171 is a straight line having a constant diameter. It may have a tubular shape.

In particular, the inlet 171 of the second discharge pipe 170 is closer to the edge of the chamber lower body 130 , more specifically, the flat plate 131 than the inlet 161 of the first discharge pipe 160 . to be positioned, the cross section of the first discharge pipe 160 may be smaller than that of the inlet 161 . Accordingly, it is possible to easily separately extract large particles having a larger particle size than fine particles, and there is an advantage in that there is no need to separately classify the pulverized raw material.

On the other hand, the grinding raw material inlet 140 may be formed through the grinding chamber 113 at one side of the chamber upper body (120).

Alternatively, a plurality of grinding air inlets 150 may be provided by being spaced apart in the circumferential direction at a predetermined distance along the circumferential surface 111 of the chamber body 110 . In addition, each of the grinding air inlets 150 may be formed through the grinding chamber 113 in a horizontal direction. Accordingly, the grinding air may pass through the grinding nozzle 400 and be radially ejected through the circumferential surface 111 of the chamber body 110 to generate a high-speed swirling airflow.

The pulverized raw material supply unit 200 includes a feed hopper 210 and a feeding tube 220 .

The feed hopper 210 refers to a hopper-shaped pulverized raw material input tank that stores the pulverized raw material (G) and supplies the pulverized raw material (G) to the outlet in a set amount.

One side of the feeding tube 220 communicates with the outlet of the feed hopper 210 , and may be configured to receive feeding air (B) from the outside and supply the pulverized raw material (G) to the pulverizing chamber 113 .

For example, the feeding tube 220 has a shape in which the inlet side through which the feeding air (B, see FIG. 2 ) is injected is disposed upward compared to the outlet side connected to the crushed raw material inlet 140 and is positioned higher. The feeding pipe 220 is inclined downward to have a predetermined inclination angle from the inlet side to the outlet side, and the feeding pipe 220 has an outlet connected to the grinding raw material inlet 140 of the chamber upper body 120, and the grinding raw material is A set amount can be constantly supplied to the grinding chamber 113, and there is an advantage in that the supply flow of the grinding raw material is continuously made.

For example, the pulverized raw material quantitatively supplied to the feed hopper 210 is accelerated to supersonic speed by the high-pressure grinding air sprayed into the chamber body 110 from the grinding nozzle 400 to the inside of the horizontal chamber 100 . It can be smoothly entered into the grinding chamber 113 of the. In addition, in the grinding chamber 113 , collisions and friction are induced by the high-speed gas injected from the grinding nozzle 400 , that is, grinding air, so that the grinding can be performed to an ultra-fine powder form.

The grinding air supply unit 300 includes an injection tube 310 and a ring-type accommodation tube 320 . In addition, the grinding air supply unit 300 may further include a grinding nozzle 400 .

The injection pipe 310 is horizontally disposed to correspond to the center of the height of the chamber body 110 and refers to a pipe into which high-pressure compressed grinding air A is injected from the outside.

The ring-shaped accommodation tube 320 serves as another chamber that receives the grinding air A injected from the injection tube 310 and supplies it to the inside of the chamber body 110 through the grinding nozzle 400 . In other words, the ring-shaped receiving tube 320 fills and receives the grinding air to be sprayed into the grinding chamber 113 through the grinding nozzle 400 at a predetermined pressure, and uses a plurality of grinding nozzles 400 to provide a uniform pressure. It is possible to uniformly spray the grinding air into the grinding chamber 113 .

For example, the ring-shaped accommodation tube 320 is formed at the same height as the injection tube 310 and is connected to the outlet side and one side of the injection tube 310 , and surrounds the outer circumference of the chamber body 110 in the circumferential direction. may be formed.

The grinding nozzle 400 is connected to communicate between the ring-shaped receiving tube 320 and the ground inlet 150 . The grinding air (A) accommodated in the ring-shaped accommodation tube 320 by the grinding nozzle 400 may be injected into the grinding chamber 113 at high speed.

A plurality of grinding nozzles 400 may be provided to correspond to the number of the grinding air inlets 150 provided with a plurality of grinding nozzles 400 spaced apart in the circumferential direction along the circumferential surface 111 of the chamber body 110 .

Specifically, the grinding nozzle 400 may be radially disposed in the center direction of the chamber body 110 with the first spacer 330 having a predetermined size therebetween.

For example, the inlet 430 of the grinding nozzle 400 communicates with the ring-shaped receiving tube 320, and the outlet 420 of the grinding nozzle 400 may be connected to the grinding air inlet 150. have.

In particular, the body portion 410 of the grinding nozzle 400 formed between the inlet portion 430 and the outlet portion 420 of the grinding nozzle 400 has a cross section from the inlet portion 430 toward the outlet portion 420 toward the A reduced cone-shaped flow path 411 may be provided.

The cone-shaped flow path 411 significantly increases the flow rate of the grinding air injected through the outlet 420 of the grinding nozzle 400 compared to the flow rate of the grinding air supplied to the inlet 430 of the grinding nozzle 400. By playing a role, it is possible to provide the effect of increasing the grinding effect according to the improvement of the flow rate.

Horizontal ultrafine pulverization apparatus according to the second embodiment

In the drawings, FIG. 10 is a perspective view schematically illustrating a horizontal ultrafine powder grinding apparatus according to a second embodiment of the present invention, and FIG. It is a front view, and FIG. 12 and FIG. 13 are both side views briefly showing the horizontal type ultra-fine pulverization apparatus according to the second embodiment of the present invention. And FIG. 14 is a plan view schematically illustrating a horizontal ultrafine powder grinding apparatus according to a second embodiment of the present invention, and FIG. 15 is a rear view schematically illustrating a horizontal ultrafine powder grinding apparatus according to a second embodiment of the present invention. am.

As shown, the horizontal ultrafine powder grinding apparatus 1 according to the second embodiment of the present invention includes a horizontal chamber 100, a grinding raw material supply unit 200, a grinding air supply unit 300, a chamber cryogenic cooling unit ( 500).

In the case of the horizontal ultrafine pulverizer 1 according to the second embodiment of the present invention, the horizontal chamber 100, the grinding raw material supply unit 200, the grinding air supply unit 300, and the grinding nozzle 400 are described above. Since it is the same as that of the first embodiment, a redundant description will be omitted.

Hereinafter, the chamber cryogenic cooling unit 500, which is a main technical feature of the horizontal ultrafine powder grinding apparatus 1 according to the second embodiment of the present invention, will be described in detail.

The chamber cryogenic cooling unit 500 forcibly flows cryogenic liquid nitrogen in a direction surrounding the circumferential surface of the horizontal chamber 100, more specifically, the cylindrical chamber body 110 of the horizontal chamber 100. The temperature is cooled to cryogenic temperature. Accordingly, the crushing raw materials can be frozen in the process of the crushing raw materials collide and rub inside the crushing chamber 113, so that the crushing function can be significantly strengthened.

The chamber cryogenic cooling unit 500 includes a liquid nitrogen supply pipe 510 , a liquid nitrogen flow unit 520 , and a liquid nitrogen discharge pipe 530 .

The liquid nitrogen supply pipe 510 refers to a piping line through which liquid nitrogen is supplied from the outside.

The liquid nitrogen flow unit 520 refers to a coil-shaped cooling line or cooling channel for cooling the chamber body 110 to cryogenic temperature using liquid nitrogen supplied from the liquid nitrogen supply pipe 510 .

For example, the liquid nitrogen flow unit 520 has one end connected to the liquid nitrogen supply pipe 510 and is formed to surround the circumferential surface 111 of the cylindrical chamber body 110 in a coil shape. As a result, liquid nitrogen flows through the circumferential surface 111 of the cylindrical chamber body 110 in the form of a coil, thereby rapidly and accurately cooling the temperature of the chamber body 110 to a cryogenic temperature through heat exchange with each other. do

The liquid nitrogen discharge pipe 530 is connected to the other end of the liquid nitrogen flow unit 520 , and refers to a piping line for discharging liquid nitrogen after cooling of the chamber body 110 to the outside.

As a specific example, the liquid nitrogen supply pipe 510 and the liquid nitrogen discharge pipe 530 may extend in a direction opposite to the injection pipe 310 of the grinding air supply unit 300 in parallel with each other. Accordingly, interference and contact between the piping line through which liquid nitrogen is supplied and discharged and the piping line to which the high-pressure compressed gas, that is, grinding air is supplied, is completely excluded to ensure stability, and the advantage of high convenience in terms of maintenance between the pipes. have.

In addition, the liquid nitrogen flow unit 520 includes a first liquid nitrogen flow pipe 521 , a second liquid nitrogen flow pipe 523 , and a joint pipe 525 .

The first liquid nitrogen flow pipe 521 is disposed to surround the upper peripheral surface 111 of the chamber body 110 in a coil shape based on the height of the grinding air inlet 150 and is provided to flow liquid nitrogen do

The second liquid nitrogen flow pipe 523 is disposed to surround the lower circumferential surface 111 of the chamber body 110 in a coil shape based on the height of the grinding air inlet 150 and is provided to flow liquid nitrogen. do.

In this way, a gap is formed by a predetermined height between the first and second liquid nitrogen flow tubes 523, and the ring-shaped receiving tube 320 is connected to the chamber body through the height gap between the first and second liquid nitrogen flow tubes 523. It can be positioned stably with the second gap portion 527 from the periphery of 110 . Accordingly, the chamber body 110 can be cooled to a cryogenic temperature using the first and second liquid nitrogen flow tubes 523, and high-speed injection of the grinding air through the ring-type receiving tube 320 and the grinding nozzle 400 is prevented. There are advantages to not giving. In addition, since the first and second liquid nitrogen flow pipes 523 are formed at a predetermined distance from the grinding nozzle 400, interference and contact friction with the grinding air supply unit 300 and the grinding nozzle 400 can be prevented. there are advantages to

The joint pipe 525 refers to a U-shaped connecting pipe connecting the first liquid nitrogen flow pipe 521 and the second liquid nitrogen flow pipe 523 .

Specifically, the joint pipe 525 is more outside than the ring-shaped receiving pipe 320 of the grinding air supply unit 300, that is, a predetermined distance away from the circumferential surface 111 of the chamber body 110 in a radial direction. The second spacing portions 527 formed to be spaced apart are positioned.

In addition, the liquid nitrogen flow part 520 includes a first horizontal extension pipe 522 connecting one end of the fitting pipe 525 and the outlet of the first liquid nitrogen flow pipe 521 , and the other of the fitting pipe 525 . It further includes a second horizontal extension pipe 522 connecting between the end and the inlet of the second liquid nitrogen flow pipe 523 .

The first horizontal extension pipe 522 is located above the ring-type accommodation tube 320 and is formed to extend toward one end of the joint tube 525 in the horizontal direction, and is disposed with a gap with the upper portion of the ring-type accommodation tube 320 .

The second horizontal extension pipe 524 is located below the ring-type accommodation tube 320 and is formed to extend toward the other end of the joint tube 525 in the horizontal direction, and is disposed with a gap with the lower portion of the ring-type accommodation tube 320 . .

This joint pipe 525 may be located on the opposite side of the injection pipe 310 of the grinding air supply unit 300 , and the joint pipe 525 is in the same direction as the liquid nitrogen supply pipe 510 and the liquid nitrogen discharge pipe 530 . It may be connected between the first and second liquid nitrogen flow pipes 521 and 523 in a form that protrudes in a U-shape.

Accordingly, the liquid nitrogen flow unit 520 can cool the chamber body 110, more specifically, the temperature of the grinding chamber 113 inside the chamber body 110 to a cryogenic temperature, while the grinding air supply unit 300 and It is possible to reduce the positional interference with the grinding nozzle 400 as much as possible to improve the convenience of installation and maintenance, and to prevent positional interference between the grinding air supply line, which is a high-pressure compressed gas, and the liquid nitrogen supply line for cryogenic cooling, and maximize each other. There is an advantage in that stability can be significantly improved by being spaced apart.

As described above, according to the configuration and operation of the present invention, high-pressure grinding air (eg, compressed air, nitrogen, etc.) is ejected into the horizontal chamber through the grinding nozzle, and a high-speed swirling air flow is generated inside the horizontal chamber. do. The pulverized raw material is moved to the center of the horizontal chamber by centrifugal force, and successive mutual collisions are induced so that the pulverized raw material is pulverized into ultra-fine particles of a target size and discharged through a discharge pipe installed in the lower center of the horizontal chamber.

Furthermore, it is possible to improve the grinding effect by improving the structure of the grinding nozzle to which the high-pressure gas is supplied into the horizontal chamber to a flow rate increasing structure.

Furthermore, a first discharge pipe located at the center of the lower end of the horizontal chamber through which fine particles pulverized into ultra-fine particles are discharged, and a second discharge pipe through which large particles that are not pulverized into ultra-fine particles are discharged separately from the first discharge pipe. By doing so, it is possible to extract particulates and alleles through independent paths. Accordingly, there is an advantage in that there is no need for separate raw material classification.

In addition, it is formed to surround the outside of the horizontal chamber with a liquid nitrogen pipe, and if necessary, the outside of the horizontal chamber can be cooled to a cryogenic temperature (eg, -196°C, etc.). Accordingly, when the pulverized raw materials collide with each other in the horizontal chamber to be pulverized, the freeze pulverization effect is additionally applied, thereby greatly improving pulverization performance.

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in the present specification. It is obvious that variations can be made. In addition, although the effects of the configuration of the present invention are not explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the configuration should also be recognized.

A: Grinding Air
B: feeding air
G: raw material for grinding
1: Horizontal ultrafine pulverizer
100: horizontal chamber
110: chamber body
111: circumferential surface
113: grinding chamber
120: chamber upper body
121: domed cap
130: chamber lower body
131: flat plate
140: pulverized raw material input port
150: grinding air inlet
160: first discharge pipe
161: first discharge pipe inlet part
163: second discharge pipe outlet
170: second discharge pipe
171: first discharge pipe inlet part
173: second discharge pipe outlet
200: pulverized raw material supply unit
210: feed hopper
220: feeding tube
300: grinding air supply unit
310: injection tube
320: ring-type receiving tube
330: first spacer
400: grinding nozzle
410: body part
411: cone-shaped euro
420: exit
430: inlet
500: chamber cryogenic cooling unit
510: liquid nitrogen supply pipe
520: liquid nitrogen flow unit
521: first liquid nitrogen flow tube
522: first horizontal extension tube
523: second liquid nitrogen flow tube
524: second horizontal extension tube
525: joint pipe
527: second spacer
530: liquid nitrogen discharge pipe

Claims (10)

The grinding air inlet that receives grinding air from the outside, the grinding raw material inlet that receives the grinding raw material from the outside, and the grinding raw material input according to the high-speed swirling air flow, cause mutual collision between the grinding raw materials and grind them into fine particles of a set size a horizontal chamber having a grinding chamber; a grinding raw material supply unit connected to the grinding raw material inlet and inputting the grinding raw material supplied from the outside into the inside of the horizontal chamber; and a grinding air supply unit connected to the grinding air inlet and supplying grinding air compressed to a set pressure into the horizontal chamber.
The horizontal chamber may include: a chamber body sealing the outside of the grinding chamber except for the grinding air inlet and the grinding raw material inlet; a chamber upper body that is hermetically formed on an upper portion of the chamber body; and a chamber lower body hermetically formed in a lower portion of the chamber body.
The chamber body has a cylindrical shape with a diameter greater than a height, and the chamber upper body includes a dome-shaped cap with an inner central portion protruding more convexly upward than the upper end of the chamber body, and the chamber lower body includes the A flat plate having a flat shape as a whole corresponding to the height of the lower end of the chamber body,
The horizontal chamber may include: a first discharge pipe for discharging particles pulverized to a set size in the crushing chamber to the outside of the crushing chamber; and a second discharge pipe for separately extracting large particles having a larger particle size than the fine particles in the grinding chamber and discharging them to the outside of the grinding chamber;
The inlet portion of the first discharge tube is located in the inner center of the flat plate and is formed through the grinding chamber, and the outlet portion of the first discharge tube is formed at a position extending a predetermined length vertically downward than the flat plate,
The inlet portion of the second discharge tube is located close to the edge of the flat plate at a predetermined distance from the inner center of the flat plate where the inlet portion of the first discharge tube is located, is formed through the grinding chamber, and the second discharge The outlet portion of the tube is formed to have a shorter length than the outlet portion of the first discharge tube in a direction parallel to the outlet portion of the first discharge tube,
The grinding air supply unit may include: an injection pipe into which high-pressure compressed grinding air is injected from the outside; a ring-shaped accommodation tube connected to an outlet side and one side of the injection tube and receiving the grinding air supplied from the injection tube; and a grinding nozzle for high-pressure jetting the grinding air accommodated in the ring-shaped accommodation tube into the grinding chamber.
The grinding nozzles are provided in plurality to correspond to the grinding air inlets provided in plurality, spaced apart in the circumferential direction along the circumferential surface of the chamber body,
The grinding nozzle connects between the ring-shaped accommodating pipe and the chamber body with a first gap therebetween, wherein an inlet of the grinding nozzle communicates with the ring-shaped accommodating pipe, and an outlet of the grinding nozzle is connected to the grinding air inlet. connected,
The grinding nozzle is a horizontal ultrafine powder grinding device, characterized in that it is radially disposed along the center direction of the chamber body in the first gap portion.
delete delete delete delete According to claim 1,
The grinding raw material inlet is formed through the grinding chamber at one side of the upper body of the chamber,
The grinding air inlet, characterized in that provided in a plurality along the circumferential surface of the chamber body
Horizontal ultrafine pulverizer.
7. The method of claim 6,
The pulverized raw material supply unit,
a feed hopper for storing the grinding raw material and supplying the grinding raw material to the outlet in a set amount; and
a feeding tube having one side communicated with the outlet of the feed hopper, receiving feeding air from the outside and supplying the pulverized raw material to the pulverizing chamber;
A horizontal ultrafine pulverization device comprising a.
delete delete According to claim 1,
a chamber cryogenic cooling unit for cooling the temperature of the horizontal chamber to a cryogenic temperature;
A horizontal ultrafine pulverization device further comprising a.

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